1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
16 ////////////////////////////////////////////////////////////////////////////
19 // Gain calibration using tracks
22 // 1.) Inner TPC gain alignement - (parabolic) parameterization (inside of one sector)
23 // 2.) Angular and z-position correction (parabolic) parameterization
24 // 3.) Sector gain alignment
26 // Following histograms are accumulated
27 // a.) Simple 1D histograms per chamber
28 // b.) Profile histograms per chamber - local x dependence
29 // c.) 2D Profile histograms - local x - fi dependence
31 // To get the gain map - the simple solution - use the histograms - is not enough
32 // The resulting mean amplitude map depends strongly on the track topology
33 // These dependence can be reduced, taking into account angular effect, and diffusion effect
34 // Using proper fit modeles
39 // === Calibration class for gain calibration using tracks ===
43 // A 6-parametric parabolic function
45 // G(x, y) = p0 + p1*x + p2*y + p3*x^2 + p4*y^2 + p5 * x*y
47 // is fitted to the maximum charge values or total charge values of
48 // all the clusters contained in the tracks that are added to this
49 // object. This fit is performed for each read out chamber, in fact even
50 // for each type of pad sizes (thus for one segment, which consists of
51 // an IROC and an OROC, there are three fitters used, corresponding to
52 // the three pad sizes). The coordinate origin is at the center of the
53 // particular pad size region on each ROC.
55 // Because of the Landau nature of the charge deposition we use
56 // different "types" of fitters instead of one to minimize the effect
57 // of the long Landau tail. The difference between the fitters is only
58 // the charge value, that is put into them, i.e. the charge is subject
59 // to a transformation. At this point we use three different fit types:
61 // a) simple: the charge is put in as it is
62 // b) sqrt: the square root of the charge is put into the fitter
63 // c) log: fgkM * Log(1+q/fgkM) is put into the fitter, with
64 // q being the untransformed charge and fgkM=25
66 // The results of the fits may be visualized and further used by
67 // creating an AliTPCCalROC or AliTPCCalPad. You may specify to undo
68 // the transformation and/or to normalize to the pad size.
70 // Not every track you add to this object is actually used for
71 // calibration. There are some cuts and conditions to exclude bad
72 // tracks, e.g. a pt cut to cut out tracks with too much charge
73 // deposition or a cut on edge clusters which are not fully
74 // registered and don't give a usable signal.
76 // 2) Interface / usage
77 // ====================
78 // For each track to be added you need to call Process().
79 // This method expects an AliTPCseed, which contains the necessary
80 // cluster information. At the moment of writing this information
81 // is stored in an AliESDfriend corresponding to an AliESD.
82 // You may also call AddTrack() if you don't want the cuts and
83 // other quality conditions to kick in (thus forcing the object to
84 // accept the track) or AddCluster() for adding single clusters.
85 // Call one of the Evaluate functions to evaluate the fitter(s) and
86 // to retrieve the fit parameters, erros and so on. You can also
87 // do this later on by using the different Getters.
89 // The visualization methods CreateFitCalPad() and CreateFitCalROC()
90 // are straight forward to use.
92 // Note: If you plan to write this object to a ROOT file, make sure
93 // you evaluate all the fitters *before* writing, because due
94 // to a bug in the fitter component writing fitters doesn't
95 // work properly (yet). Be aware that you cannot re-evaluate
96 // the fitters after loading this object from file.
97 // (This will be gone for a new ROOT version > v5-17-05)
100 // In order to debug some numerical algorithm all data data which are used for
101 // fitters can be stored in the debug streamers. In case of fitting roblems the
102 // errors and tendencies can be checked.
110 ////////////////////////////////////////////////////////////////////////////
114 gSystem->Load("libANALYSIS");
115 gSystem->Load("libSTAT");
116 gSystem->Load("libTPCcalib");
118 TFile fcalib("CalibObjects.root");
119 TObjArray * array = (TObjArray*)fcalib.Get("TPCCalib");
120 AliTPCcalibTracksGain * gain = ( AliTPCcalibTracksGain *)array->FindObject("calibTracksGain");
123 // Angular and drift correction
125 AliTPCClusterParam *param = new AliTPCClusterParam;param->SetInstance(param);
126 gain->UpdateClusterParam(param);
127 TF2 fdrty("fdrty","AliTPCClusterParam::SQnorm(0,0,x,y,0)",0,1,0,1)
130 // Make visual Tree - compare with Kr calibration
132 AliTPCCalPad * gain010 = gain->CreateFitCalPad(0,kTRUE,0); gain010->SetName("CGain010");
133 AliTPCCalPad * gain110 = gain->CreateFitCalPad(1,kTRUE,0); gain110->SetName("CGain110");
134 AliTPCCalPad * gain210 = gain->CreateFitCalPad(2,kTRUE,0); gain210->SetName("CGain210");
135 TFile fkr("/u/miranov/GainMap.root");
136 AliTPCCalPad *gainKr = fkr.Get("GainMap"); fkr->SetName("KrGain");
138 AliTPCPreprocessorOnline * preprocesor = new AliTPCPreprocessorOnline;
139 preprocesor->AddComponent(gain010);
140 preprocesor->AddComponent(gain110);
141 preprocesor->AddComponent(gain210);
142 preprocesor->AddComponent(gainKr);
143 preprocesor->DumpToFile("cosmicGain.root");
147 // Simple session using the debug streamers
150 gSystem->AddIncludePath("-I$ALICE_ROOT/TPC/macros");
151 gROOT->LoadMacro("$ALICE_ROOT/TPC/macros/AliXRDPROOFtoolkit.cxx+")
152 AliXRDPROOFtoolkit tool;
154 TChain * chain0 = tool.MakeChain("gain.txt","dEdx",0,1000000);
155 TChain * chain1 = tool.MakeChain("gain.txt","Track",0,1000000);
156 TChain * chain2 = tool.MakeChain("gain.txt","TrackG",0,1000000);
161 chain2->SetAlias("k1","1/0.855");
162 chain2->SetAlias("k0","1/0.9928");
163 chain2->SetAlias("k2","1/1.152");
171 #include <TPDGCode.h>
174 #include "TMatrixD.h"
175 #include "TTreeStream.h"
177 #include "AliTPCParamSR.h"
178 #include "AliTPCClusterParam.h"
179 #include "AliTrackPointArray.h"
181 #include "AliTPCcalibTracksGain.h"
184 #include <TLinearFitter.h>
185 #include <TTreeStream.h>
187 #include <TCollection.h>
188 #include <TIterator.h>
189 #include <TProfile.h>
190 #include <TProfile2D.h>
192 #include <TStatToolkit.h>
198 #include "AliMathBase.h"
200 #include "AliTPCROC.h"
201 #include "AliTPCParamSR.h"
202 #include "AliTPCCalROC.h"
203 #include "AliTPCCalPad.h"
204 #include "AliTPCClusterParam.h"
206 #include "AliTracker.h"
208 #include "AliESDtrack.h"
209 #include "AliESDfriend.h"
210 #include "AliESDfriendTrack.h"
211 #include "AliTPCseed.h"
212 #include "AliTPCclusterMI.h"
213 #include "AliTPCcalibTracksCuts.h"
214 #include "AliTPCFitPad.h"
215 #include "TStatToolkit.h"
221 #include "AliESDEvent.h"
225 TFile f("TPCCalibTracksGain.root")
227 gSystem->Load("libPWG1.so")
233 TString * str = comp.FitPlane("Cl.fQ/dedxQ.fElements[0]","Cl.fY++Cl.fX","Cl.fDetector<36",chi2,vec,mat)
237 ClassImp(AliTPCcalibTracksGain)
239 const Bool_t AliTPCcalibTracksGain::fgkUseTotalCharge = kTRUE;
240 const Double_t AliTPCcalibTracksGain::fgkM = 25.;
241 const char* AliTPCcalibTracksGain::fgkDebugStreamFileName = "TPCCalibTracksGain.root";
242 AliTPCParamSR* AliTPCcalibTracksGain::fgTPCparam = new AliTPCParamSR();
244 AliTPCcalibTracksGain::AliTPCcalibTracksGain() :
246 fCuts(0), // cuts that are used for sieving the tracks used for calibration
247 fGainMap(0), // gain map to be applied
249 // Simple Array of histograms
251 fArrayQM(0), // Qmax normalized
252 fArrayQT(0), // Qtot normalized
253 fProfileArrayQM(0), // Qmax normalized versus local X
254 fProfileArrayQT(0), // Qtot normalized versus local X
255 fProfileArrayQM2D(0), // Qmax normalized versus local X and phi
256 fProfileArrayQT2D(0), // Qtot normalized versus local X and phi
260 fSimpleFitter(0), // simple fitter for short pads
261 fSqrtFitter(0), // sqrt fitter for medium pads
262 fLogFitter(0), // log fitter for long pads
264 fFitter0M(0), // fitting of the atenuation, angular correction, and mean chamber gain
265 fFitter1M(0), // fitting of the atenuation, angular correction, and mean chamber gain
266 fFitter2M(0), // fitting of the atenuation, angular correction, and mean chamber gain
267 fFitter0T(0), // fitting of the atenuation, angular correction, and mean chamber gain
268 fFitter1T(0), // fitting of the atenuation, angular correction, and mean chamber gain
269 fFitter2T(0), // fitting of the atenuation, angular correction, and mean chamber gain
271 fDFitter0M(0), // fitting of the atenuation, angular correction
272 fDFitter1M(0), // fitting of the atenuation, angular correction
273 fDFitter2M(0), // fitting of the atenuation, angular correction
274 fDFitter0T(0), // fitting of the atenuation, angular correction
275 fDFitter1T(0), // fitting of the atenuation, angular correction
276 fDFitter2T(0), // fitting of the atenuation, angular correction
278 fSingleSectorFitter(0), // just for debugging
282 fTotalTracks(0), // just for debugging
283 fAcceptedTracks(0), // just for debugging
284 fDebugCalPadRaw(0), // just for debugging
285 fDebugCalPadCorr(0) // just for debugging
289 // Default constructor.
293 AliTPCcalibTracksGain::AliTPCcalibTracksGain(const AliTPCcalibTracksGain& obj) :
294 AliTPCcalibBase(obj),
295 fCuts(obj.fCuts), // cuts that are used for sieving the tracks used for calibration
296 fGainMap(new AliTPCCalPad(*(obj.fGainMap))), // gain map to be applied
297 fArrayQM(0), // Qmax normalized
298 fArrayQT(0), // Qtot normalized
302 fProfileArrayQM(obj.fProfileArrayQM), // Qmax normalized versus local X
303 fProfileArrayQT(obj.fProfileArrayQT), // Qtot normalized versus local X
304 fProfileArrayQM2D(obj.fProfileArrayQM2D), // Qmax normalized versus local X and phi
305 fProfileArrayQT2D(obj.fProfileArrayQT2D), // Qtot normalized versus local X and phi
309 fSimpleFitter(obj.fSimpleFitter), // simple fitter for short pads
310 fSqrtFitter(obj.fSqrtFitter), // sqrt fitter for medium pads
311 fLogFitter(obj.fLogFitter), // log fitter for long pads
312 fFitter0M(obj.fFitter0M),
313 fFitter1M(obj.fFitter1M),
314 fFitter2M(obj.fFitter2M),
315 fFitter0T(obj.fFitter0T),
316 fFitter1T(obj.fFitter1T),
317 fFitter2T(obj.fFitter2T),
319 fDFitter0M(obj.fDFitter0M),
320 fDFitter1M(obj.fDFitter1M),
321 fDFitter2M(obj.fDFitter2M),
322 fDFitter0T(obj.fDFitter0T),
323 fDFitter1T(obj.fDFitter1T),
324 fDFitter2T(obj.fDFitter2T),
325 fSingleSectorFitter(obj.fSingleSectorFitter), // just for debugging
329 fTotalTracks(obj.fTotalTracks), // just for debugging
330 fAcceptedTracks(obj.fAcceptedTracks), // just for debugging
331 fDebugCalPadRaw(obj.fDebugCalPadRaw), // just for debugging
332 fDebugCalPadCorr(obj.fDebugCalPadCorr) // just for debugging
340 AliTPCcalibTracksGain& AliTPCcalibTracksGain::operator=(const AliTPCcalibTracksGain& rhs) {
342 // Assignment operator.
346 TNamed::operator=(rhs);
347 fDebugCalPadRaw = new AliTPCCalPad(*(rhs.fDebugCalPadRaw));
348 fDebugCalPadCorr = new AliTPCCalPad(*(rhs.fDebugCalPadCorr));
349 fSimpleFitter = new AliTPCFitPad(*(rhs.fSimpleFitter));
350 fSqrtFitter = new AliTPCFitPad(*(rhs.fSqrtFitter));
351 fLogFitter = new AliTPCFitPad(*(rhs.fLogFitter));
352 fSingleSectorFitter = new AliTPCFitPad(*(rhs.fSingleSectorFitter));
353 fCuts = new AliTPCcalibTracksCuts(*(rhs.fCuts));
354 fGainMap = new AliTPCCalPad(*(rhs.fGainMap));
359 AliTPCcalibTracksGain::AliTPCcalibTracksGain(const char* name, const char* title, AliTPCcalibTracksCuts* cuts) :
361 fCuts(0), // cuts that are used for sieving the tracks used for calibration
362 fGainMap(0), // gain map to be applied
363 fArrayQM(0), // Qmax normalized
364 fArrayQT(0), // Qtot normalized
368 fProfileArrayQM(0), // Qmax normalized versus local X
369 fProfileArrayQT(0), // Qtot normalized versus local X
370 fProfileArrayQM2D(0), // Qmax normalized versus local X and phi
371 fProfileArrayQT2D(0), // Qtot normalized versus local X and phi
375 fSimpleFitter(0), // simple fitter for short pads
376 fSqrtFitter(0), // sqrt fitter for medium pads
377 fLogFitter(0), // log fitter for long pads
378 fFitter0M(0), // fitting of the atenuation, angular correction, and mean chamber gain
379 fFitter1M(0), // fitting of the atenuation, angular correction, and mean chamber gain
380 fFitter2M(0), // fitting of the atenuation, angular correction, and mean chamber gain
381 fFitter0T(0), // fitting of the atenuation, angular correction, and mean chamber gain
382 fFitter1T(0), // fitting of the atenuation, angular correction, and mean chamber gain
383 fFitter2T(0), // fitting of the atenuation, angular correction, and mean chamber gain
385 fDFitter0M(0), // fitting of the atenuation, angular correction
386 fDFitter1M(0), // fitting of the atenuation, angular correction
387 fDFitter2M(0), // fitting of the atenuation, angular correction
388 fDFitter0T(0), // fitting of the atenuation, angular correction
389 fDFitter1T(0), // fitting of the atenuation, angular correction
390 fDFitter2T(0), // fitting of the atenuation, angular correction
391 fSingleSectorFitter(0), // just for debugging
395 fTotalTracks(0), // just for debugging
396 fAcceptedTracks(0), // just for debugging
397 fDebugCalPadRaw(0), // just for debugging
398 fDebugCalPadCorr(0) // just for debugging
404 this->SetNameTitle(name, title);
407 // Fitter initialization
409 fSimpleFitter = new AliTPCFitPad(8, "hyp7", "");
410 fSqrtFitter = new AliTPCFitPad(8, "hyp7", "");
411 fLogFitter = new AliTPCFitPad(8, "hyp7", "");
412 fSingleSectorFitter = new AliTPCFitPad(8, "hyp7", "");
414 fFitter0M = new TLinearFitter(45,"hyp44");
415 fFitter1M = new TLinearFitter(45,"hyp44");
416 fFitter2M = new TLinearFitter(45,"hyp44");
417 fFitter0T = new TLinearFitter(45,"hyp44");
418 fFitter1T = new TLinearFitter(45,"hyp44");
419 fFitter2T = new TLinearFitter(45,"hyp44");
421 fDFitter0M = new TLinearFitter(10,"hyp9");
422 fDFitter1M = new TLinearFitter(10,"hyp9");
423 fDFitter2M = new TLinearFitter(10,"hyp9");
424 fDFitter0T = new TLinearFitter(10,"hyp9");
425 fDFitter1T = new TLinearFitter(10,"hyp9");
426 fDFitter2T = new TLinearFitter(10,"hyp9");
429 fFitter0M->StoreData(kFALSE);
430 fFitter1M->StoreData(kFALSE);
431 fFitter2M->StoreData(kFALSE);
432 fFitter0T->StoreData(kFALSE);
433 fFitter1T->StoreData(kFALSE);
434 fFitter2T->StoreData(kFALSE);
436 fDFitter0M->StoreData(kFALSE);
437 fDFitter1M->StoreData(kFALSE);
438 fDFitter2M->StoreData(kFALSE);
439 fDFitter0T->StoreData(kFALSE);
440 fDFitter1T->StoreData(kFALSE);
441 fDFitter2T->StoreData(kFALSE);
444 // Add profile histograms -JUST for visualization - Not used for real calibration
447 fArrayQM=new TObjArray(73); // Qmax normalized
448 fArrayQT=new TObjArray(73); // Qtot normalized
449 fProfileArrayQM = new TObjArray(37); // Qmax normalized versus local X
450 fProfileArrayQT = new TObjArray(37); // Qtot normalized versus local X
451 fProfileArrayQM2D = new TObjArray(37); // Qmax normalized versus local X and phi
452 fProfileArrayQT2D = new TObjArray(37); // Qtot normalized versus local X and phi
454 for (Int_t i=0; i<73; i++){
455 sprintf(hname,"QM_%d",i);
456 fArrayQM->AddAt(new TH1F(hname,hname,200,0,1000),i);
457 sprintf(hname,"QT_%d",i);
458 fArrayQT->AddAt(new TH1F(hname,hname,200,0,1000),i);
461 for (Int_t i=0; i<37;i++){
462 sprintf(hname,"QMvsx_%d",i);
463 fProfileArrayQM->AddAt(new TProfile(hname,hname,50,89,250),i);
464 sprintf(hname,"QTvsx_%d",i);
465 fProfileArrayQT->AddAt(new TProfile(hname,hname,50,89,250),i);
466 sprintf(hname,"QM2D_%d",i);
467 fProfileArrayQM2D->AddAt(new TProfile2D(hname,hname,50,89,250,10,-0.15,0.15),i);
468 sprintf(hname,"QT2D_%d",i);
469 fProfileArrayQT2D->AddAt(new TProfile2D(hname,hname,50,89,250,10,-0.15,0.15),i);
472 // just for debugging -counters
476 fDebugCalPadRaw = new AliTPCCalPad("DebugCalPadRaw", "All clusters simply added up before correction");
477 fDebugCalPadCorr = new AliTPCCalPad("DebugCalPadCorr", "All clusters simply added up after correction");
478 // this will be gone for the a new ROOT version > v5-17-05
479 for (UInt_t i = 0; i < 36; i++) {
480 fNShortClusters[i] = 0;
481 fNMediumClusters[i] = 0;
482 fNLongClusters[i] = 0;
486 AliTPCcalibTracksGain::~AliTPCcalibTracksGain() {
491 Info("Destructor","");
492 if (fSimpleFitter) delete fSimpleFitter;
493 if (fSqrtFitter) delete fSqrtFitter;
494 if (fLogFitter) delete fLogFitter;
495 if (fSingleSectorFitter) delete fSingleSectorFitter;
497 if (fDebugCalPadRaw) delete fDebugCalPadRaw;
498 if (fDebugCalPadCorr) delete fDebugCalPadCorr;
501 void AliTPCcalibTracksGain::Terminate(){
503 // Evaluate fitters and close the debug stream.
504 // Also move or copy the debug stream, if a debugStreamPrefix is provided.
508 AliTPCcalibBase::Terminate();
513 void AliTPCcalibTracksGain::Process(AliTPCseed* seed) {
515 // Main method to be called when a new seed is supposed to be processed
516 // and be used for gain calibration. Its quality is checked before it
522 if (!fCuts->AcceptTrack(seed)) return;
526 static Bool_t doinit= kTRUE;
528 fSimpleFitter = new AliTPCFitPad(8, "hyp7", "");
529 fSqrtFitter = new AliTPCFitPad(8, "hyp7", "");
530 fLogFitter = new AliTPCFitPad(8, "hyp7", "");
531 fSingleSectorFitter = new AliTPCFitPad(8, "hyp7", "");
533 fFitter0M = new TLinearFitter(45,"hyp44");
534 fFitter1M = new TLinearFitter(45,"hyp44");
535 fFitter2M = new TLinearFitter(45,"hyp44");
536 fFitter0T = new TLinearFitter(45,"hyp44");
537 fFitter1T = new TLinearFitter(45,"hyp44");
538 fFitter2T = new TLinearFitter(45,"hyp44");
540 fDFitter0M = new TLinearFitter(10,"hyp9");
541 fDFitter1M = new TLinearFitter(10,"hyp9");
542 fDFitter2M = new TLinearFitter(10,"hyp9");
543 fDFitter0T = new TLinearFitter(10,"hyp9");
544 fDFitter1T = new TLinearFitter(10,"hyp9");
545 fDFitter2T = new TLinearFitter(10,"hyp9");
554 Long64_t AliTPCcalibTracksGain::Merge(TCollection *list) {
556 // Merge() merges the results of all AliTPCcalibTracksGain objects contained in
557 // list, thus allowing a distributed computation of several files, e.g. on PROOF.
558 // The merged results are merged with the data members of the AliTPCcalibTracksGain
559 // object used for calling the Merge method.
560 // The return value is 0 /*the total number of tracks used for calibration*/ if the merge
561 // is successful, otherwise it is -1.
564 if (!list || list->IsEmpty()) return -1;
566 if (!fSimpleFitter) fSimpleFitter = new AliTPCFitPad(8, "hyp7", "");
567 if (!fSqrtFitter) fSqrtFitter = new AliTPCFitPad(8, "hyp7", "");
568 if (!fLogFitter) fLogFitter = new AliTPCFitPad(8, "hyp7", "");
569 if (!fSingleSectorFitter) fSingleSectorFitter = new AliTPCFitPad(8, "hyp7", "");
572 // just for debugging
573 if (!fDebugCalPadRaw) fDebugCalPadRaw = new AliTPCCalPad("DebugCalPadRaw", "All clusters simply added up before correction");
574 if (!fDebugCalPadCorr) fDebugCalPadCorr = new AliTPCCalPad("DebugCalPadCorr", "All clusters simply added up after correction");
576 TIterator* iter = list->MakeIterator();
577 AliTPCcalibTracksGain* cal = 0;
579 while ((cal = (AliTPCcalibTracksGain*)iter->Next())) {
580 if (!cal->InheritsFrom(AliTPCcalibTracksGain::Class())) {
581 Error("Merge","Attempt to add object of class %s to a %s", cal->ClassName(), this->ClassName());
590 Float_t AliTPCcalibTracksGain::GetGain(AliTPCclusterMI* cl){
592 // Return local gain at cluster position
595 if(!fGainMap) return factor;
597 AliTPCCalROC * roc = fGainMap->GetCalROC(cl->GetDetector());
598 Int_t irow = cl->GetRow();
600 if (irow < 63) { // IROC
601 factor = roc->GetValue(irow, TMath::Nint(cl->GetPad()));
603 factor = roc->GetValue(irow - 63, TMath::Nint(cl->GetPad()));
606 if (factor<0.1) factor=0.1;
611 Float_t AliTPCcalibTracksGain::GetMaxNorm(AliTPCclusterMI * cl){
613 // Get normalized amplituded if the gain map provided
615 return cl->GetMax()/GetGain(cl);
619 Float_t AliTPCcalibTracksGain::GetQNorm(AliTPCclusterMI * cl){
621 // Get normalized amplituded if the gain map provided
623 return cl->GetQ()/GetGain(cl);
628 void AliTPCcalibTracksGain::Add(AliTPCcalibTracksGain* cal) {
630 // Adds another AliTPCcalibTracksGain object to this object.
633 fSimpleFitter->Add(cal->fSimpleFitter);
634 fSqrtFitter->Add(cal->fSqrtFitter);
635 fLogFitter->Add(cal->fLogFitter);
636 fSingleSectorFitter->Add(cal->fSingleSectorFitter);
640 if (cal->fFitter0M->GetNpoints()>0) fFitter0M->Add(cal->fFitter0M);
641 if (cal->fFitter1M->GetNpoints()>0) fFitter1M->Add(cal->fFitter1M);
642 if (cal->fFitter2M->GetNpoints()>0) fFitter2M->Add(cal->fFitter2M);
643 if (cal->fFitter0T->GetNpoints()>0) fFitter0T->Add(cal->fFitter0T);
644 if (cal->fFitter1T->GetNpoints()>0) fFitter1T->Add(cal->fFitter1T);
645 if (cal->fFitter2T->GetNpoints()>0) fFitter2T->Add(cal->fFitter2T);
647 if (cal->fDFitter0M->GetNpoints()>0) fDFitter0M->Add(cal->fDFitter0M);
648 if (cal->fDFitter1M->GetNpoints()>0) fDFitter1M->Add(cal->fDFitter1M);
649 if (cal->fDFitter2M->GetNpoints()>0) fDFitter2M->Add(cal->fDFitter2M);
650 if (cal->fDFitter0T->GetNpoints()>0) fDFitter0T->Add(cal->fDFitter0T);
651 if (cal->fDFitter1T->GetNpoints()>0) fDFitter1T->Add(cal->fDFitter1T);
652 if (cal->fDFitter2T->GetNpoints()>0) fDFitter2T->Add(cal->fDFitter2T);
657 for (Int_t i=0; i<73; i++){
659 his = (TH1F*)fArrayQM->At(i);
660 hism = (TH1F*)cal->fArrayQM->At(i);
661 if (his && hism) his->Add(hism);
662 his = (TH1F*)fArrayQT->At(i);
663 hism = (TH1F*)cal->fArrayQT->At(i);
664 if (his && hism) his->Add(hism);
668 for (Int_t i=0; i<37; i++){
670 his = (TProfile*)fProfileArrayQM->At(i);
671 hism = (TProfile*)cal->fProfileArrayQM->At(i);
672 if (his && hism) his->Add(hism);
673 his = (TProfile*)fProfileArrayQT->At(i);
674 hism = (TProfile*)cal->fProfileArrayQT->At(i);
675 if (his && hism) his->Add(hism);
679 for (Int_t i=0; i<37; i++){
680 TProfile2D *his,*hism;
681 his = (TProfile2D*)fProfileArrayQM2D->At(i);
682 hism = (TProfile2D*)cal->fProfileArrayQM2D->At(i);
683 if (his && hism) his->Add(hism);
684 his = (TProfile2D*)fProfileArrayQT2D->At(i);
685 hism = (TProfile2D*)cal->fProfileArrayQT2D->At(i);
686 if (his && hism) his->Add(hism);
689 // this will be gone for the a new ROOT version > v5-17-05
690 for (UInt_t iSegment = 0; iSegment < 36; iSegment++) {
691 fNShortClusters[iSegment] += cal->fNShortClusters[iSegment];
692 fNMediumClusters[iSegment] += cal->fNMediumClusters[iSegment];
693 fNLongClusters[iSegment] += cal->fNLongClusters[iSegment];
696 // just for debugging, remove me
697 fTotalTracks += cal->fTotalTracks;
698 fAcceptedTracks += cal->fAcceptedTracks;
699 fDebugCalPadRaw->Add(cal->fDebugCalPadRaw);
700 fDebugCalPadCorr->Add(cal->fDebugCalPadCorr);
704 void AliTPCcalibTracksGain::AddTrack(AliTPCseed* seed) {
706 // The clusters making up the track (seed) are added to various fit functions.
707 // See AddCluster(...) for more detail.
712 // simple histograming part
713 for (Int_t i=0; i<159; i++){
714 AliTPCclusterMI* cluster = seed->GetClusterPointer(i);
715 if (cluster) AddCluster(cluster);
719 void AliTPCcalibTracksGain::AddCluster(AliTPCclusterMI* cluster){
721 // Adding cluster information to the simple histograms
722 // No correction, fittings are applied
725 Float_t kThreshold=5;
726 if (cluster->GetX()<=0) return;
727 if (cluster->GetQ()<=kThreshold) return;
730 Int_t sector = cluster->GetDetector();
733 if (his) his->Fill(GetQNorm(cluster));
735 if (his) his->Fill(GetQNorm(cluster));
737 if (his) his->Fill(GetMaxNorm(cluster));
739 if (his) his->Fill(GetMaxNorm(cluster));
743 prof = GetProfileQT(sector);
744 if (prof) prof->Fill(cluster->GetX(),GetQNorm(cluster));
745 prof = GetProfileQT(-1);
746 if (prof) prof->Fill(cluster->GetX(),GetQNorm(cluster));
747 prof = GetProfileQM(sector);
748 if (prof) prof->Fill(cluster->GetX(),GetMaxNorm(cluster));
749 prof = GetProfileQM(-1);
750 if (prof) prof->Fill(cluster->GetX(),GetMaxNorm(cluster));
752 Float_t phi = cluster->GetY()/cluster->GetX();
754 prof2 = GetProfileQT2D(sector);
755 if (prof2) prof2->Fill(cluster->GetX(),phi,GetQNorm(cluster));
756 prof2 = GetProfileQT2D(-1);
757 if (prof2) prof2->Fill(cluster->GetX(),phi,GetQNorm(cluster));
758 prof2 = GetProfileQM2D(sector);
759 if (prof2) prof2->Fill(cluster->GetX(),phi,GetMaxNorm(cluster));
760 prof2 = GetProfileQM2D(-1);
761 if (prof2) prof2->Fill(cluster->GetX(),phi,GetMaxNorm(cluster));
768 void AliTPCcalibTracksGain::AddCluster(AliTPCclusterMI* cluster, Float_t /*momenta*/, Float_t/* mdedx*/, Int_t padType,
769 Float_t xcenter, TVectorD& dedxQ, TVectorD& /*dedxM*/, Float_t /*fraction*/, Float_t fraction2, Float_t dedge,
770 TVectorD& /*parY*/, TVectorD& /*parZ*/, TVectorD& meanPos) {
772 // Adds cluster to the appropriate fitter for later analysis.
773 // The charge used for the fit is the maximum charge for this specific cluster or the
774 // accumulated charge per cluster, depending on the value of fgkUseTotalCharge.
775 // Depending on the pad size where the cluster is registered, the value will be put in
776 // the appropriate fitter. Furthermore, for each pad size three different types of fitters
777 // are used. The fit functions are the same for all fitters (parabolic functions), but the value
778 // added to each fitter is different. The simple fitter gets the charge plugged in as is, the sqrt fitter
779 // gets the square root of the charge, and the log fitter gets fgkM*(1+q/fgkM), where q is the original charge
783 Float_t kfraction = 0.7;
787 // Where to put selection on threshold?
788 // Defined by the Q/dEdxT variable - see debug streamer:
790 // Debug stream variables: (Where tu cut ?)
791 // chain0->Draw("Cl.fQ/dedxQ.fElements[1]>>his(100,0,3)","fraction2<0.6&&dedge>3","",1000000);
793 // chain0->Draw("Cl.fMax/dedxM.fElements[1]>>his(100,0,3)","fraction2<0.6&&dedge>3","",1000000)
795 // chain0->Draw("Cl.fQ/dedxQ.fElements[2]>>his(100,0,3)","fraction2<0.7&&dedge>3","",1000000)
797 // chain0->Draw("Cl.fMax/dedxM.fElements[2]>>his(100,0,3)","fraction2<0.7&&dedge>3","",1000000)
799 // chain0->Draw("Cl.fQ/dedxQ.fElements[3]>>his(100,0,3)","fraction2<0.8&&dedge>3","",1000000)
802 // chain0->Draw("Cl.fQ/dedxQ.fElements[4]>>his(100,0,3)","fraction2<0.9&&dedge>3","",1000000)
805 // Fraction choosen 0.7
808 Error("AddCluster", "Cluster not valid.");
812 if (dedge < kedge) return;
813 if (fraction2 > kfraction) return;
815 //Int_t padType = GetPadType(cluster->GetX());
817 //Double_t centerPad[2] = {0};
818 //AliTPCFitPad::GetPadRegionCenterLocal(padType, centerPad);
819 //xx[0] = cluster->GetX() - centerPad[0];
820 //xx[1] = cluster->GetY() - centerPad[1];
821 xx[0] = cluster->GetX() - xcenter;
822 xx[1] = cluster->GetY();
823 xx[2] = xx[0] * xx[0];
824 xx[3] = xx[1] * xx[1];
825 xx[4] = xx[0] * xx[1];
826 xx[5] = TMath::Abs(cluster->GetZ()) - TMath::Abs(meanPos[4]);
827 xx[6] = xx[5] * xx[5];
829 // Update profile histograms
835 Int_t segment = cluster->GetDetector() % 36;
836 Double_t q = fgkUseTotalCharge ? ((Double_t)(GetQNorm(cluster))) : ((Double_t)(GetMaxNorm(cluster))); // note: no normalization to pad size!
838 // just for debugging
841 GetRowPad(cluster->GetX(), cluster->GetY(), row, pad);
842 fDebugCalPadRaw->GetCalROC(cluster->GetDetector())->SetValue(row, pad, q + fDebugCalPadRaw->GetCalROC(cluster->GetDetector())->GetValue(row, pad));
844 // correct charge by normalising to mean charge per track
847 // just for debugging
848 fDebugCalPadCorr->GetCalROC(cluster->GetDetector())->SetValue(row, pad, q + fDebugCalPadCorr->GetCalROC(cluster->GetDetector())->GetValue(row, pad));
850 Double_t sqrtQ = TMath::Sqrt(q);
851 Double_t logQ = fgkM * TMath::Log(1 + q / fgkM);
852 TLinearFitter * fitter =0;
854 fitter = fSimpleFitter->GetFitter(segment, padType);
855 fitter->AddPoint(xx, q);
857 fitter = fSqrtFitter->GetFitter(segment, padType);
858 fitter->AddPoint(xx, sqrtQ);
860 fitter = fLogFitter->GetFitter(segment, padType);
861 fitter->AddPoint(xx, logQ);
863 fitter=fSingleSectorFitter->GetFitter(0, padType);
864 fitter->AddPoint(xx, q);
866 // this will be gone for the a new ROOT version > v5-17-05
867 if (padType == kShortPads)
868 fNShortClusters[segment]++;
869 if (padType == kMediumPads)
870 fNMediumClusters[segment]++;
871 if (padType == kLongPads)
872 fNLongClusters[segment]++;
875 void AliTPCcalibTracksGain::Evaluate(Bool_t robust, Double_t frac) {
877 // Evaluates all fitters contained in this object.
878 // If the robust option is set to kTRUE a robust fit is performed with frac as
879 // the minimal fraction of good points (see TLinearFitter::EvalRobust for details).
880 // Beware: Robust fitting is much slower!
883 fSimpleFitter->Evaluate(robust, frac);
884 fSqrtFitter->Evaluate(robust, frac);
885 fLogFitter->Evaluate(robust, frac);
886 fSingleSectorFitter->Evaluate(robust, frac);
902 AliTPCCalPad* AliTPCcalibTracksGain::CreateFitCalPad(UInt_t fitType, Bool_t undoTransformation, Bool_t normalizeToPadSize) {
904 // Creates the calibration object AliTPCcalPad using fitted parameterization
907 for (UInt_t iSector = 0; iSector < 72; iSector++)
908 tpc.Add(CreateFitCalROC(iSector, fitType, undoTransformation, normalizeToPadSize));
909 return new AliTPCCalPad(&tpc);
912 AliTPCCalROC* AliTPCcalibTracksGain::CreateFitCalROC(UInt_t sector, UInt_t fitType, Bool_t undoTransformation, Bool_t normalizeToPadSize) {
914 // Create the AliTPCCalROC with the values per pad
915 // sector - sector of interest
921 GetParameters(sector % 36, 0, fitType, par);
922 return CreateFitCalROC(sector, 0, par, fitType, undoTransformation, normalizeToPadSize);
925 GetParameters(sector % 36, 1, fitType, par);
926 AliTPCCalROC* roc1 = CreateFitCalROC(sector, 1, par, fitType, undoTransformation, normalizeToPadSize);
927 GetParameters(sector % 36, 2, fitType, par);
928 AliTPCCalROC* roc2 = CreateFitCalROC(sector, 2, par, fitType, undoTransformation, normalizeToPadSize);
929 AliTPCCalROC* roc3 = CreateCombinedCalROC(roc1, roc2);
936 AliTPCCalROC* AliTPCcalibTracksGain::CreateFitCalROC(UInt_t sector, UInt_t padType, TVectorD &fitParam, UInt_t fitType, Bool_t undoTransformation, Bool_t normalizeToPadSize) {
938 // This function is essentially a copy of AliTPCCalROC::CreateGlobalFitCalROC(...), with the
939 // modifications, that the center of the region of same pad size is used as the origin
940 // of the fit function instead of the center of the ROC.
941 // The possibility of a linear fit is removed as well because it is not needed.
942 // Only values for pads with the given pad size are calculated, the rest is 0.
943 // Set undoTransformation for undoing the transformation that was applied to the
944 // charge values before they were put into the fitter (thus allowing comparison to the original
945 // charge values). For fitType use 0 for the simple fitter, 1 for the sqrt fitter, 2 for the log fitter.
946 // If normalizeToPadSize is true, the values are normalized to the pad size.
947 // Please be aware, that you even need to specify the fitType if you want to normalize to the pad size without
948 // undoing the transformation (because normalizing involves undoing the trafo first, then normalizing, then
949 // applying the trafo again).
950 // Please note: The normalization to the pad size is a simple linear scaling with the pad length, which
951 // actually doesn't describe reality!
955 Double_t centerPad[2] = {0};
956 Float_t localXY[3] = {0};
957 AliTPCROC* tpcROC = AliTPCROC::Instance();
958 if ((padType == 0 && sector >= tpcROC->GetNInnerSector()) || (padType > 0 && sector < tpcROC->GetNInnerSector()) || sector >= tpcROC->GetNSector())
960 AliTPCCalROC* lROCfitted = new AliTPCCalROC(sector);
961 //tpcROC->GetPositionLocal(sector, lROCfitted->GetNrows()/2, lROCfitted->GetNPads(lROCfitted->GetNrows()/2)/2, centerPad); // use this instead of the switch statement if you want to calculate the center of the ROC and not the center of the regions with the same pad size
967 endRow = lROCfitted->GetNrows();
975 endRow = lROCfitted->GetNrows();
979 AliTPCFitPad::GetPadRegionCenterLocal(padType, centerPad);
981 for (UInt_t irow = startRow; irow < endRow; irow++) {
982 for (UInt_t ipad = 0; ipad < lROCfitted->GetNPads(irow); ipad++) {
983 tpcROC->GetPositionLocal(sector, irow, ipad, localXY); // calculate position localXY by pad and row number
984 dlx = localXY[0] - centerPad[0];
985 dly = localXY[1] - centerPad[1];
986 value = fitParam[0] + fitParam[1]*dlx + fitParam[2]*dly + fitParam[3]*dlx*dlx + fitParam[4]*dly*dly + fitParam[5]*dlx*dly;
988 // Let q' = value be the transformed value without any pad size corrections,
989 // let T be the transformation and let l be the pad size
990 // 1) don't undo transformation, don't normalize: return q'
991 // 2) undo transformation, don't normalize: return T^{-1} q'
992 // 3) undo transformation, normalize: return (T^{-1} q') / l
993 // 4) don't undo transformation, normalize: return T((T^{-1} q') / l)
994 if (!undoTransformation && !normalizeToPadSize) {/* value remains unchanged */} // (1)
995 else { // (2), (3), (4)
998 case 0: /* value remains unchanged */ break;
999 case 1: value = value * value; break;
1000 case 2: value = (TMath::Exp(value / fgkM) - 1) * fgkM; break;
1001 default: Error("CreateFitCalROC", "Wrong fit type."); break;
1003 if (normalizeToPadSize) value /= GetPadLength(localXY[0]); // (3)
1005 if (!undoTransformation && normalizeToPadSize) { // (4)
1008 case 0: /* value remains unchanged */ break;
1009 case 1: value = TMath::Sqrt(value); break;
1010 case 2: value = fgkM * TMath::Log(1 + value / fgkM); break;
1011 default: Error("CreateFitCalROC", "Wrong fit type."); break;
1014 lROCfitted->SetValue(irow, ipad, value);
1020 AliTPCCalROC* AliTPCcalibTracksGain::CreateCombinedCalROC(const AliTPCCalROC* roc1, const AliTPCCalROC* roc2) {
1022 // Combines the medium pad size values of roc1 with the long pad size values of roc2 into a new
1023 // AliTPCCalROC. Returns a null pointer if any one of the ROCs is an IROC; issues a warning message
1024 // if the sectors of roc1 and roc2 don't match, but still continue and use the sector of roc1 as the
1025 // sector of the new ROC.
1028 if (!roc1 || !roc2) return 0;
1029 if ((Int_t)(roc1->GetSector()) < fgTPCparam->GetNInnerSector()) return 0;
1030 if ((Int_t)(roc2->GetSector()) < fgTPCparam->GetNInnerSector()) return 0;
1031 if (roc1->GetSector() != roc2->GetSector()) Warning("CreateCombinedCalROC", "Sector number mismatch.");
1032 AliTPCCalROC* roc = new AliTPCCalROC(roc1->GetSector());
1034 for (UInt_t iRow = 0; iRow < 64; iRow++) {
1035 for (UInt_t iPad = 0; iPad < roc->GetNPads(iRow); iPad++)
1036 roc->SetValue(iRow, iPad, roc1->GetValue(iRow, iPad));
1038 for (UInt_t iRow = 64; iRow < roc->GetNrows(); iRow++) {
1039 for (UInt_t iPad = 0; iPad < roc->GetNPads(iRow); iPad++)
1040 roc->SetValue(iRow, iPad, roc2->GetValue(iRow, iPad));
1045 Bool_t AliTPCcalibTracksGain::GetParameters(UInt_t segment, UInt_t padType, UInt_t fitType, TVectorD &fitParam) {
1047 // Puts the fit parameters for the specified segment (IROC & OROC), padType and fitType
1048 // into the fitParam TVectorD (which should contain 8 elements).
1049 // padType is one of kShortPads, kMediumPads, kLongPads. fitType is one of kSimpleFitter, kSqrtFitter, kLogFitter.
1050 // Note: The fitter has to be evaluated first!
1052 TLinearFitter * fitter = GetFitter(segment, padType, fitType);
1055 fitter->GetParameters(fitParam);
1058 Error("AliTPCcalibTracksGain::GetParameters",
1059 Form("Fitter%d_%d_%d not availble", segment, padType, fitType));
1065 void AliTPCcalibTracksGain::GetErrors(UInt_t segment, UInt_t padType, UInt_t fitType, TVectorD &fitError) {
1067 // Puts the fit parameter errors for the specified segment (IROC & OROC), padType and fitType
1068 // into the fitError TVectorD (which should contain 8 elements).
1069 // padType is one of kShortPads, kMediumPads, kLongPads. fitType is one of kSimpleFitter, kSqrtFitter, kLogFitter.
1070 // Note: The fitter has to be evaluated first!
1073 GetFitter(segment, padType, fitType)->GetErrors(fitError);
1074 fitError *= TMath::Sqrt(GetRedChi2(segment, padType, fitType));
1077 Double_t AliTPCcalibTracksGain::GetRedChi2(UInt_t segment, UInt_t padType, UInt_t fitType) {
1079 // Returns the reduced chi^2 value for the specified segment, padType and fitType.
1080 // padType is one of kShortPads, kMediumPads, kLongPads. fitType is one of kSimpleFitter, kSqrtFitter, kLogFitter.
1081 // Note: The fitter has to be evaluated first!
1084 // this will be gone for the a new ROOT version > v5-17-05
1085 Int_t lNClusters = 0;
1088 lNClusters = fNShortClusters[segment];
1091 lNClusters = fNMediumClusters[segment];
1094 lNClusters = fNLongClusters[segment];
1097 return GetFitter(segment, padType, fitType)->GetChisquare()/(lNClusters - 8);
1100 void AliTPCcalibTracksGain::GetCovarianceMatrix(UInt_t segment, UInt_t padType, UInt_t fitType, TMatrixD& covMatrix) {
1102 // Returns the covariance matrix for the specified segment, padType, fitType.
1103 // padType is one of kShortPads, kMediumPads, kLongPads. fitType is one of kSimpleFitter, kSqrtFitter, kLogFitter.
1106 GetFitter(segment, padType, fitType)->GetCovarianceMatrix(covMatrix);
1109 TLinearFitter* AliTPCcalibTracksGain::GetFitter(UInt_t segment, UInt_t padType, UInt_t fitType) {
1111 // Returns the TLinearFitter object for the specified segment, padType, fitType.
1112 // padType is one of kShortPads, kMediumPads, kLongPads. fitType is one of kSimpleFitter, kSqrtFitter, kLogFitter.
1117 return fSimpleFitter->GetFitter(segment, padType);
1119 return fSqrtFitter->GetFitter(segment, padType);
1121 return fLogFitter->GetFitter(segment, padType);
1123 return fSingleSectorFitter->GetFitter(0, padType);
1128 Double_t AliTPCcalibTracksGain::GetPadLength(Double_t lx) {
1130 // The function returns 0.75 for an IROC, 1. for an OROC at medium pad size position,
1131 // 1.5 for an OROC at long pad size position, -1 if out of bounds.
1134 Double_t irocLow = fgTPCparam->GetPadRowRadiiLow(0) - fgTPCparam->GetInnerPadPitchLength()/2;
1135 Double_t irocUp = fgTPCparam->GetPadRowRadiiLow(fgTPCparam->GetNRowLow()-1) + fgTPCparam->GetInnerPadPitchLength()/2;
1136 Double_t orocLow1 = fgTPCparam->GetPadRowRadiiUp(0) - fgTPCparam->GetOuter1PadPitchLength()/2;
1137 Double_t orocUp1 = fgTPCparam->GetPadRowRadiiUp(fgTPCparam->GetNRowUp1()-1) + fgTPCparam->GetOuter1PadPitchLength()/2;
1138 Double_t orocLow2 = fgTPCparam->GetPadRowRadiiUp(fgTPCparam->GetNRowUp1()) - fgTPCparam->GetOuter2PadPitchLength()/2;
1139 Double_t orocUp2 = fgTPCparam->GetPadRowRadiiUp(fgTPCparam->GetNRowUp()-1) + fgTPCparam->GetOuter2PadPitchLength()/2;
1142 if (lx >= irocLow && lx <= irocUp) return 0.75;
1143 // if OROC medium pads
1144 if (lx >= orocLow1 && lx <= orocUp1) return 1.;
1145 // if OROC long pads
1146 if (lx >= orocLow2 && lx <= orocUp2) return 1.5;
1151 Int_t AliTPCcalibTracksGain::GetPadType(Double_t lx) {
1153 // The function returns 0 for an IROC, 1 for an OROC at medium pad size position,
1154 // 2 for an OROC at long pad size position, -1 if out of bounds.
1157 if (GetPadLength(lx) == 0.75) return 0;
1158 else if (GetPadLength(lx) == 1.) return 1;
1159 else if (GetPadLength(lx) == 1.5) return 2;
1163 // ONLY FOR DEBUGGING PURPOSES - REMOVE ME WHEN NOT NEEDED ANYMORE
1164 Bool_t AliTPCcalibTracksGain::GetRowPad(Double_t lx, Double_t ly, Int_t& row, Int_t& pad) {
1166 // Calculate the row and pad number when the local coordinates are given.
1167 // Returns kFALSE if the position is out of range, otherwise return kTRUE.
1168 // WARNING: This function is preliminary and probably isn't very accurate!!
1171 Double_t irocLow = fgTPCparam->GetPadRowRadiiLow(0) - fgTPCparam->GetInnerPadPitchLength()/2;
1172 //Double_t irocUp = fgTPCparam->GetPadRowRadiiLow(fgTPCparam->GetNRowLow()-1) + fgTPCparam->GetInnerPadPitchLength()/2;
1173 Double_t orocLow1 = fgTPCparam->GetPadRowRadiiUp(0) - fgTPCparam->GetOuter1PadPitchLength()/2;
1174 //Double_t orocUp1 = fgTPCparam->GetPadRowRadiiUp(fgTPCparam->GetNRowUp1()-1) + fgTPCparam->GetOuter1PadPitchLength()/2;
1175 Double_t orocLow2 = fgTPCparam->GetPadRowRadiiUp(fgTPCparam->GetNRowUp1()) - fgTPCparam->GetOuter2PadPitchLength()/2;
1176 //Double_t orocUp2 = fgTPCparam->GetPadRowRadiiUp(fgTPCparam->GetNRowUp()-1) + fgTPCparam->GetOuter2PadPitchLength()/2;
1178 if (GetPadType(lx) == 0) {
1179 row = (Int_t)((lx - irocLow) / fgTPCparam->GetInnerPadPitchLength());
1180 pad = (Int_t)((ly + fgTPCparam->GetYInner(row)) / fgTPCparam->GetInnerPadPitchWidth());
1181 } else if (GetPadType(lx) == 1) {
1182 row = (Int_t)((lx - orocLow1) / fgTPCparam->GetOuter1PadPitchLength());
1183 pad = (Int_t)((ly + fgTPCparam->GetYOuter(row)) / fgTPCparam->GetOuterPadPitchWidth());
1184 } else if (GetPadType(lx) == 2) {
1185 row = fgTPCparam->GetNRowUp1() + (Int_t)((lx - orocLow2) / fgTPCparam->GetOuter2PadPitchLength());
1186 pad = (Int_t)((ly + fgTPCparam->GetYOuter(row)) / fgTPCparam->GetOuterPadPitchWidth());
1192 void AliTPCcalibTracksGain::DumpTrack(AliTPCseed* track) {
1194 // Dump track information to the debug stream
1204 TVectorD meanPos[3];
1207 for (Int_t ipad = 0; ipad < 3; ipad++) {
1208 dedxM[ipad].ResizeTo(5);
1209 dedxQ[ipad].ResizeTo(5);
1210 parY[ipad].ResizeTo(3);
1211 parZ[ipad].ResizeTo(3);
1212 meanPos[ipad].ResizeTo(6);
1213 Bool_t isOK = GetDedx(track, ipad, rows, sector[ipad], npoints[ipad], dedxM[ipad], dedxQ[ipad], parY[ipad], parZ[ipad], meanPos[ipad]);
1215 AddTracklet(sector[ipad],ipad, dedxQ[ipad], dedxM[ipad], parY[ipad], parZ[ipad], meanPos[ipad] );
1219 TTreeSRedirector * cstream = GetDebugStreamer();
1221 (*cstream) << "Track" <<
1222 "run="<<fRun<< // run number
1223 "event="<<fEvent<< // event number
1224 "time="<<fTime<< // time stamp of event
1225 "trigger="<<fTrigger<< // trigger
1226 "mag="<<fMagF<< // magnetic field
1227 "Track.=" << track << // track information
1232 if ( GetStreamLevel()>1 && count>1){
1233 (*cstream) << "TrackG" <<
1234 "run="<<fRun<< // run number
1235 "event="<<fEvent<< // event number
1236 "time="<<fTime<< // time stamp of event
1237 "trigger="<<fTrigger<< // trigger
1238 "mag="<<fMagF<< // magnetic field
1239 "Track.=" << track << // track information
1241 // info for pad type 0
1242 "sector0="<<sector[0]<<
1243 "npoints0="<<npoints[0]<<
1244 "dedxM0.="<<&dedxM[0]<<
1245 "dedxQ0.="<<&dedxQ[0]<<
1246 "parY0.="<<&parY[0]<<
1247 "parZ0.="<<&parZ[0]<<
1248 "meanPos0.="<<&meanPos[0]<<
1250 // info for pad type 1
1251 "sector1="<<sector[1]<<
1252 "npoints1="<<npoints[1]<<
1253 "dedxM1.="<<&dedxM[1]<<
1254 "dedxQ1.="<<&dedxQ[1]<<
1255 "parY1.="<<&parY[1]<<
1256 "parZ1.="<<&parZ[1]<<
1257 "meanPos1.="<<&meanPos[1]<<
1259 // info for pad type 2
1260 "sector2="<<sector[2]<<
1261 "npoints2="<<npoints[2]<<
1262 "dedxM2.="<<&dedxM[2]<<
1263 "dedxQ2.="<<&dedxQ[2]<<
1264 "parY2.="<<&parY[2]<<
1265 "parZ2.="<<&parZ[2]<<
1266 "meanPos2.="<<&meanPos[2]<<
1273 Bool_t AliTPCcalibTracksGain::GetDedx(AliTPCseed* track, Int_t padType, Int_t* /*rows*/,
1274 Int_t §or, Int_t& npoints,
1275 TVectorD &dedxM, TVectorD &dedxQ,
1276 TVectorD &parY, TVectorD &parZ, TVectorD&meanPos)
1279 // GetDedx for given sector for given track
1280 // padType - type of pads
1283 static TLinearFitter fitY(2, "pol1");
1284 static TLinearFitter fitZ(2, "pol1");
1285 fitY.StoreData(kFALSE);
1286 fitZ.StoreData(kFALSE);
1289 Int_t firstRow = 0, lastRow = 0;
1291 Float_t xcenter = 0;
1292 const Float_t ktany = TMath::Tan(TMath::DegToRad() * 10);
1293 const Float_t kedgey = 4.;
1296 lastRow = fgTPCparam->GetNRowLow();
1300 firstRow = fgTPCparam->GetNRowLow();
1301 lastRow = fgTPCparam->GetNRowLow() + fgTPCparam->GetNRowUp1();
1305 firstRow = fgTPCparam->GetNRowLow() + fgTPCparam->GetNRowUp1();
1306 lastRow = fgTPCparam->GetNRowLow() + fgTPCparam->GetNRowUp();
1309 minRow = (lastRow - firstRow) / 2;
1312 Int_t nclusters = 0;
1313 Int_t nclustersNE = 0; // number of not edge clusters
1314 Int_t lastSector = -1;
1315 Float_t amplitudeQ[100];
1316 Float_t amplitudeM[100];
1324 for (Int_t iCluster = firstRow; iCluster < lastRow; iCluster++) {
1325 AliTPCclusterMI* cluster = track->GetClusterPointer(iCluster);
1327 Int_t detector = cluster->GetDetector() ;
1328 if (lastSector == -1) lastSector = detector;
1329 if (lastSector != detector) continue;
1330 amplitudeQ[nclusters] = GetQNorm(cluster);
1331 amplitudeM[nclusters] = GetMaxNorm(cluster);
1332 rowIn[nclusters] = iCluster;
1334 Double_t dx = cluster->GetX() - xcenter;
1335 Double_t y = cluster->GetY();
1336 Double_t z = cluster->GetZ();
1337 fitY.AddPoint(&dx, y);
1338 fitZ.AddPoint(&dx, z);
1345 if (TMath::Abs(cluster->GetY()) < cluster->GetX()*ktany - kedgey) nclustersNE++;
1349 if (nclusters < minRow / 2) return kFALSE;
1350 if (nclustersNE < minRow / 2) return kFALSE;
1351 for (Int_t i = 0; i < 6; i++) meanPos[i] /= Double_t(nclusters);
1354 fitY.GetParameters(parY);
1355 fitZ.GetParameters(parZ);
1357 // calculate truncated mean
1359 TMath::Sort(nclusters, amplitudeQ, index, kFALSE);
1364 for (Int_t i = 0; i < 5; i++) {
1373 for (Int_t i = 0; i < nclusters; i++) {
1374 Int_t rowSorted = rowIn[index[i]];
1375 AliTPCclusterMI* cluster = track->GetClusterPointer(rowSorted);
1377 if (TMath::Abs(cluster->GetY()) > cluster->GetX()*ktany - kedgey) continue; //don't take edge clusters
1379 if (inonEdge < nclustersNE * 0.5) {
1381 dedxQ[0] += amplitudeQ[index[i]];
1382 dedxM[0] += amplitudeM[index[i]];
1384 if (inonEdge < nclustersNE * 0.6) {
1386 dedxQ[1] += amplitudeQ[index[i]];
1387 dedxM[1] += amplitudeM[index[i]];
1389 if (inonEdge < nclustersNE * 0.7) {
1391 dedxQ[2] += amplitudeQ[index[i]];
1392 dedxM[2] += amplitudeM[index[i]];
1394 if (inonEdge < nclustersNE * 0.8) {
1396 dedxQ[3] += amplitudeQ[index[i]];
1397 dedxM[3] += amplitudeM[index[i]];
1399 if (inonEdge < nclustersNE * 0.9) {
1401 dedxQ[4] += amplitudeQ[index[i]];
1402 dedxM[4] += amplitudeM[index[i]];
1405 for (Int_t i = 0; i < 5; i++) {
1406 dedxQ[i] /= ndedx[i];
1407 dedxM[i] /= ndedx[i];
1409 TTreeSRedirector * cstream = GetDebugStreamer();
1411 Float_t momenta = track->GetP();
1412 Float_t mdedx = track->GetdEdx();
1413 for (Int_t i = 0; i < nclusters; i++) {
1414 Int_t rowSorted = rowIn[index[i]];
1415 AliTPCclusterMI* cluster = track->GetClusterPointer(rowSorted);
1417 printf("Problem\n");
1420 if (TMath::Abs(cluster->GetY()) < cluster->GetX()*ktany - kedgey) inonEdge++;
1421 Float_t dedge = cluster->GetX()*ktany - TMath::Abs(cluster->GetY());
1422 Float_t fraction = Float_t(i) / Float_t(nclusters);
1423 Float_t fraction2 = Float_t(inonEdge) / Float_t(nclustersNE);
1425 AddCluster(cluster, momenta, mdedx, padType, xcenter, dedxQ, dedxM, fraction, fraction2, dedge, parY, parZ, meanPos);
1426 Float_t gain = GetGain(cluster);
1427 if (cstream) (*cstream) << "dEdx" <<
1428 "run="<<fRun<< // run number
1429 "event="<<fEvent<< // event number
1430 "time="<<fTime<< // time stamp of event
1431 "trigger="<<fTrigger<< // trigger
1432 "mag="<<fMagF<< // magnetic field
1434 "Cl.=" << cluster << // cluster of interest
1435 "gain="<<gain<< // gain at cluster position
1436 "P=" << momenta << // track momenta
1437 "dedx=" << mdedx << // mean dedx - corrected for angle
1438 "IPad=" << padType << // pad type 0..2
1439 "xc=" << xcenter << // x center of chamber
1440 "dedxQ.=" << &dedxQ << // dedxQ - total charge
1441 "dedxM.=" << &dedxM << // dedxM - maximal charge
1442 "fraction=" << fraction << // fraction - order in statistic (0,1)
1443 "fraction2=" << fraction2 << // fraction - order in statistic (0,1)
1444 "dedge=" << dedge << // distance to the edge
1445 "parY.=" << &parY << // line fit
1446 "parZ.=" << &parZ << // line fit
1447 "meanPos.=" << &meanPos << // mean position (dx, dx^2, y,y^2, z, z^2)
1451 if (cstream) (*cstream) << "dEdxT" <<
1452 "run="<<fRun<< // run number
1453 "event="<<fEvent<< // event number
1454 "time="<<fTime<< // time stamp of event
1455 "trigger="<<fTrigger<< // trigger
1456 "mag="<<fMagF<< // magnetic field
1457 "P=" << momenta << // track momenta
1458 "npoints="<<inonEdge<< // number of points
1459 "sector="<<lastSector<< // sector number
1460 "dedx=" << mdedx << // mean dedx - corrected for angle
1461 "IPad=" << padType << // pad type 0..2
1462 "xc=" << xcenter << // x center of chamber
1463 "dedxQ.=" << &dedxQ << // dedxQ - total charge
1464 "dedxM.=" << &dedxM << // dedxM - maximal charge
1465 "parY.=" << &parY << // line fit
1466 "parZ.=" << &parZ << // line fit
1467 "meanPos.=" << &meanPos << // mean position (dx, dx^2, y,y^2, z, z^2)
1470 sector = lastSector;
1475 void AliTPCcalibTracksGain::AddTracklet(UInt_t sector, UInt_t padType,TVectorD &dedxQ, TVectorD &dedxM,TVectorD& parY, TVectorD& parZ, TVectorD& meanPos){
1477 // Add measured point - dedx to the fitter
1480 //chain->SetAlias("dr","(250-abs(meanPos.fElements[4]))/250");
1481 //chain->SetAlias("tz","(0+abs(parZ.fElements[1]))");
1482 //chain->SetAlias("ty","(0+abs(parY.fElements[1]))");
1483 //chain->SetAlias("corrg","sqrt((1+ty^2)*(1+tz^2))");
1484 //expession fast - TString *strq0 = toolkit.FitPlane(chain,"dedxQ.fElements[2]","dr++ty++tz++dr*ty++dr*tz++ty*tz++ty^2++tz^2","IPad==0",chi2,npoints,param,covar,0,100000);
1488 // z and angular part
1491 xxx[0] = (250.-TMath::Abs(meanPos[4]))/250.;
1492 xxx[1] = TMath::Abs(parY[1]);
1493 xxx[2] = TMath::Abs(parZ[1]);
1494 xxx[3] = xxx[0]*xxx[1];
1495 xxx[4] = xxx[0]*xxx[2];
1496 xxx[5] = xxx[1]*xxx[2];
1497 xxx[6] = xxx[0]*xxx[0];
1498 xxx[7] = xxx[1]*xxx[1];
1499 xxx[8] = xxx[2]*xxx[2];
1503 Int_t tsector = sector%36;
1504 for (Int_t i=0;i<35;i++){
1505 xxx[9+i]=(i==tsector)?1:0;
1507 TLinearFitter *fitterM = fFitter0M;
1508 if (padType==1) fitterM=fFitter1M;
1509 if (padType==2) fitterM=fFitter2M;
1510 fitterM->AddPoint(xxx,dedxM[1]);
1512 TLinearFitter *fitterT = fFitter0T;
1513 if (padType==1) fitterT = fFitter1T;
1514 if (padType==2) fitterT = fFitter2T;
1515 fitterT->AddPoint(xxx,dedxQ[1]);
1517 TLinearFitter *dfitterM = fDFitter0M;
1518 if (padType==1) dfitterM=fDFitter1M;
1519 if (padType==2) dfitterM=fDFitter2M;
1520 dfitterM->AddPoint(xxx,dedxM[1]);
1522 TLinearFitter *dfitterT = fDFitter0T;
1523 if (padType==1) dfitterT = fDFitter1T;
1524 if (padType==2) dfitterT = fDFitter2T;
1525 dfitterT->AddPoint(xxx,dedxQ[1]);
1529 TGraph *AliTPCcalibTracksGain::CreateAmpGraph(Int_t ipad, Bool_t qmax){
1531 // create the amplitude graph
1532 // The normalized amplitudes are extrapolated to the 0 angle (y,z) and 0 drift length
1537 if (ipad==0) fFitter0M->GetParameters(vec);
1538 if (ipad==1) fFitter1M->GetParameters(vec);
1539 if (ipad==2) fFitter2M->GetParameters(vec);
1541 if (ipad==0) fFitter0T->GetParameters(vec);
1542 if (ipad==1) fFitter1T->GetParameters(vec);
1543 if (ipad==2) fFitter2T->GetParameters(vec);
1548 for (Int_t i=0;i<35;i++){
1550 amp[i]=vec[10+i]+vec[0];
1553 Float_t mean = TMath::Mean(36,amp);
1554 for (Int_t i=0;i<36;i++){
1556 amp[i]=(amp[i]-mean)/mean;
1558 TGraph *gr = new TGraph(36,sec,amp);
1563 void AliTPCcalibTracksGain::UpdateClusterParam(AliTPCClusterParam* clparam){
1565 // SetQ normalization parameters
1567 // void SetQnorm(Int_t ipad, Int_t itype, TVectorD * norm);
1578 fDFitter0T->GetParameters(vec);
1579 clparam->SetQnorm(0,0,&vec);
1580 fDFitter1T->GetParameters(vec);
1581 clparam->SetQnorm(1,0,&vec);
1582 fDFitter2T->GetParameters(vec);
1583 clparam->SetQnorm(2,0,&vec);
1585 fDFitter0M->GetParameters(vec);
1586 clparam->SetQnorm(0,1,&vec);
1587 fDFitter1M->GetParameters(vec);
1588 clparam->SetQnorm(1,1,&vec);
1589 fDFitter2M->GetParameters(vec);
1590 clparam->SetQnorm(2,1,&vec);
1596 void AliTPCcalibTracksGain::Analyze(){
1604 TVectorD * AliTPCcalibTracksGain::MakeQPosNorm(TTree * chain0, Int_t ipad, Bool_t isMax, Int_t maxPoints, Int_t verbose){
1607 // chain0 - the tree with information -Debug stream
1611 // isMax - kFALSE - total charge param
1612 // kTRUE - Max charge param
1614 // maxPoints - number of points for fit
1623 // Make Q normalization as function of following parameters
1624 // 1 - dp - relative pad position
1625 // 2 - dt - relative time position
1626 // 3 - di - drift length (norm to 1);
1627 // 4 - dq0 - Tot/Max charge
1628 // 5 - dq1 - Max/Tot charge
1629 // 6 - sy - sigma y - shape
1630 // 7 - sz - sigma z - shape
1632 // Coeficient of Taylor expansion fitted
1633 // Fit parameters returned as TVectorD
1634 // Fit parameters to be used in corresponding correction function
1635 // in AliTPCclusterParam
1638 TStatToolkit toolkit;
1643 TCut cutA("dedge>3&&fraction2<0.7");
1644 chain0->SetAlias("dp","((Cl.fPad-int(Cl.fPad)-0.5)/0.5)");
1645 chain0->SetAlias("dt","((Cl.fTimeBin-int(Cl.fTimeBin)-0.5)/0.5)");
1646 chain0->SetAlias("di","(sqrt(1.-abs(Cl.fZ)/250.))");
1647 chain0->SetAlias("dq0","(0.2*(Cl.fQ+2)/(Cl.fMax+2))");
1648 chain0->SetAlias("dq1","(5*(Cl.fMax+2)/(Cl.fQ+2))");
1649 chain0->SetAlias("sy","(0.32/sqrt(0.01^2+Cl.fSigmaY2))");
1650 chain0->SetAlias("sz","(0.32/sqrt(0.01^2+Cl.fSigmaZ2))");
1653 fstring+="dp++"; //1
1654 fstring+="dt++"; //2
1655 fstring+="dp*dp++"; //3
1656 fstring+="dt*dt++"; //4
1657 fstring+="dt*dt*dt++"; //5
1658 fstring+="dp*dt++"; //6
1659 fstring+="dp*dt*dt++"; //7
1660 fstring+="(dq0)++"; //8
1661 fstring+="(dq1)++"; //9
1664 fstring+="dp*dp*(di)++"; //10
1665 fstring+="dt*dt*(di)++"; //11
1666 fstring+="dp*dp*sy++"; //12
1667 fstring+="dt*sz++"; //13
1668 fstring+="dt*dt*sz++"; //14
1669 fstring+="dt*dt*dt*sz++"; //15
1671 fstring+="dp*dp*1*sy*sz++"; //16
1672 fstring+="dt*sy*sz++"; //17
1673 fstring+="dt*dt*sy*sz++"; //18
1674 fstring+="dt*dt*dt*sy*sz++"; //19
1676 fstring+="dp*dp*(dq0)++"; //20
1677 fstring+="dt*1*(dq0)++"; //21
1678 fstring+="dt*dt*(dq0)++"; //22
1679 fstring+="dt*dt*dt*(dq0)++"; //23
1681 fstring+="dp*dp*(dq1)++"; //24
1682 fstring+="dt*(dq1)++"; //25
1683 fstring+="dt*dt*(dq1)++"; //26
1684 fstring+="dt*dt*dt*(dq1)++"; //27
1687 if (isMax) var = "Cl.fMax/gain/dedxM.fElements[2]";
1688 if (!isMax) var = "Cl.fQ/gain/dedxQ.fElements[2]";
1689 TString cutP="IPad==";
1692 TString *strq0 = toolkit.FitPlane(chain0,var.Data(),fstring.Data(), cutP.Data()+cutA, chi2,npoints,fitParam,covMatrix,-1,0,maxPoints);
1696 printf("Chi2/npoints = %f",TMath::Sqrt(chi2/npoints));
1697 printf("\nFit function\n:%s\n",strq0->Data());
1699 TVectorD *vec = new TVectorD(fitParam);
1703 void AliTPCcalibTracksGain::MakeQPosNormAll(TTree * chain, AliTPCClusterParam * param, Int_t maxPoints, Int_t verbose){
1705 // Fill the content of the of the AliTPCclusterParam
1706 // with fitted values of corrections
1708 param->fPosQTnorm[0] = MakeQPosNorm(chain,0,kTRUE,100000,kTRUE);
1709 param->fPosQTnorm[1] = MakeQPosNorm(chain,1,kTRUE,100000,kTRUE);
1710 param->fPosQTnorm[2] = MakeQPosNorm(chain,1,kTRUE,100000,kTRUE);
1712 param->fPosQMnorm[0] = MakeQPosNorm(chain,0,kFALSE,100000,kTRUE);
1713 param->fPosQMnorm[1] = MakeQPosNorm(chain,1,kFALSE,100000,kTRUE);
1714 param->fPosQMnorm[2] = MakeQPosNorm(chain,2,kFALSE,100000,kTRUE);
1721 Position correction fit:
1723 TStatToolkit toolkit;
1729 TCut cutA("dedge>3&&fraction2<0.7");
1730 chain0->SetAlias("dp","((Cl.fPad-int(Cl.fPad)-0.5)/0.5)");
1731 chain0->SetAlias("dt","((Cl.fTimeBin-int(Cl.fTimeBin)-0.5)/0.5)");
1732 chain0->SetAlias("di","(sqrt(1.-abs(Cl.fZ)/250.))");
1733 chain0->SetAlias("dq0","(0.2*(Cl.fQ+2)/(Cl.fMax+2))");
1734 chain0->SetAlias("dq1","(5*(Cl.fMax+2)/(Cl.fQ+2))");
1735 chain0->SetAlias("sy","(0.2/sqrt(0.01^2+Cl.fSigmaY2))");
1736 chain0->SetAlias("sz","(0.2/sqrt(0.01^2+Cl.fSigmaZ2))");
1740 fstring+="dp++"; //1
1741 fstring+="dt++"; //2
1742 fstring+="dp*dp++"; //3
1743 fstring+="dt*dt++"; //4
1744 fstring+="dt*dt*dt++"; //5
1745 fstring+="dp*dt++"; //6
1746 fstring+="dp*dt*dt++"; //7
1747 fstring+="(dq0)++"; //8
1748 fstring+="(dq1)++"; //9
1751 fstring+="dp*dp*(di)++"; //10
1752 fstring+="dt*dt*(di)++"; //11
1753 fstring+="dp*dp*sy++"; //12
1754 fstring+="dt*sz++"; //13
1755 fstring+="dt*dt*sz++"; //14
1756 fstring+="dt*dt*dt*sz++"; //15
1758 fstring+="dp*dp*1*sy*sz++"; //16
1759 fstring+="dt*sy*sz++"; //17
1760 fstring+="dt*dt*sy*sz++"; //18
1761 fstring+="dt*dt*dt*sy*sz++"; //19
1763 fstring+="dp*dp*(dq0)++"; //20
1764 fstring+="dt*1*(dq0)++"; //21
1765 fstring+="dt*dt*(dq0)++"; //22
1766 fstring+="dt*dt*dt*(dq0)++"; //23
1768 fstring+="dp*dp*(dq1)++"; //24
1769 fstring+="dt*(dq1)++"; //25
1770 fstring+="dt*dt*(dq1)++"; //26
1771 fstring+="dt*dt*dt*(dq1)++"; //27
1774 TString *strq0 = toolkit.FitPlane(chain0,"Cl.fMax/gain/dedxM.fElements[2]",fstring->Data(), "IPad==0"+cutA, chi2,npoints,fitParam,covMatrix,-1,0,200000);
1775 TString *strqt0 = toolkit.FitPlane(chain0,"Cl.fQ/gain/dedxQ.fElements[2]",fstring->Data(), "IPad==0"+cutA, chi2,npoints,fitParam,covMatrix,-1,0,200000);
1777 chain0->SetAlias("qcorM0",strq0->Data());
1778 chain0->SetAlias("qcorT0",strqt0->Data());
1779 //chain0->SetAlias("mmqcorM0","min(max(qcorM0,0.75),1.15)");
1780 chain0->Draw("(Cl.fMax/gain/dedxM.fElements[2]):min(max(qcorM0,0.75),1.15)","IPad==0"+cutA,"prof",100000)
1785 sigma fit with shape 0.2257
1789 qmax sigma fit 0.2702
1790 qmax sigma fit+ratio 0.2638