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 **************************************************************************/
26 #include <TDirectory.h>
30 #include "AliRawReader.h"
31 #include "AliRawReaderRoot.h"
32 #include "AliRawReaderDate.h"
33 #include "AliTPCRawStream.h"
34 #include "AliTPCCalROC.h"
35 #include "AliTPCCalPad.h"
36 #include "AliTPCROC.h"
37 #include "AliMathBase.h"
38 #include "TTreeStream.h"
39 #include "AliTPCRawStreamFast.h"
45 #include "AliTPCCalibKr.h"
47 //----------------------------------------------------------------------------
48 // The AliTPCCalibKr class description (TPC Kr calibration).
51 // The AliTPCCalibKr keeps the array of TH3F histograms (TPC_max_padraw,TPC_max_pad,TPC_ADC_cluster),
52 // its data memebers and is filled by AliTPCCalibKrTask under conditions (Accept()).
54 // The ouput TH3F histograms are later used to determine the calibration parameters of TPC chambers.
55 // These calculations are done by using AliTPCCalibKr::Analyse() function. The ouput calibration
56 // parameters (details in AliTPCCalibKr::Analyse()) are stored in the calibKr.root file for each TPC pad.
57 // In addition the debugCalibKr.root file with debug information is created.
65 // 1. Analyse output histograms:
66 TFile f("outHistFile.root");
67 AliTPCCalibKr *obj = (AliTPCCalibKr*) cOutput.FindObject("AliTPCCalibKr")
70 // 2. See calibration parameters e.g.:
71 TFile f("calibKr.root");
72 spectrMean->GetCalROC(70)->GetValue(40,40);
73 fitMean->GetCalROC(70)->GetValue(40,40);
75 // 3. See debug information e.g.:
76 TFile f("debugCalibKr.root");
79 // -- Print calibKr TTree content
82 // -- Draw calibKr TTree variables
83 calibKr.Draw("fitMean");
89 // Author: Jacek Otwinowski (J.Otwinowski@gsi.de) and Stafan Geartner (S.Gaertner@gsi.de)
90 //-----------------------------------------------------------------------------
92 ClassImp(AliTPCCalibKr)
94 AliTPCCalibKr::AliTPCCalibKr() :
102 // default constructor
109 //_____________________________________________________________________
110 AliTPCCalibKr::AliTPCCalibKr(const AliTPCCalibKr& pad) :
119 for (Int_t iSec = 0; iSec < 72; ++iSec)
121 TH3F *hOld = pad.GetHistoKr(iSec);
123 TH3F *hNew = new TH3F( *pad.GetHistoKr(iSec) );
124 fHistoKrArray.AddAt(hNew,iSec);
129 //_____________________________________________________________________
130 AliTPCCalibKr::~AliTPCCalibKr()
136 for (Int_t iSec = 0; iSec < 72; ++iSec)
138 TH3F *hNew = (TH3F*)fHistoKrArray.At(iSec);
139 if(hNew) delete hNew; hNew = 0;
141 fHistoKrArray.Delete();
144 //_____________________________________________________________________
145 AliTPCCalibKr& AliTPCCalibKr::operator = (const AliTPCCalibKr &source)
147 // assignment operator
149 if (&source == this) return *this;
150 new (this) AliTPCCalibKr(source);
155 //_____________________________________________________________________
156 void AliTPCCalibKr::Init()
159 // init input tree and output histograms
162 // create output TObjArray
163 fHistoKrArray.Clear();
165 // add histograms to the TObjArray
166 for(Int_t i=0; i<72; ++i) {
169 if( IsCSide(i) == kTRUE && bCSide == kTRUE) {
170 TH3F *hist = CreateHisto(i);
171 if(hist) fHistoKrArray.AddAt(hist,i);
175 if(IsCSide(i) == kFALSE && bASide == kTRUE) {
176 TH3F *hist = CreateHisto(i);
177 if(hist) fHistoKrArray.AddAt(hist,i);
182 //_____________________________________________________________________
183 Bool_t AliTPCCalibKr::Process(AliTPCclusterKr *cluster)
187 // call event by event
190 if(cluster) Update(cluster);
194 //_____________________________________________________________________
195 TH3F* AliTPCCalibKr::CreateHisto(Int_t chamber)
198 // create new histogram
203 sprintf(name,"ADCcluster_ch%d",chamber);
205 if( IsIROC(chamber) == kTRUE )
207 h = new TH3F(name,name,63,0,63,100,0,100,150,100,3000);
209 h = new TH3F(name,name,96,0,96,100,0,100,150,100,3000);
211 h->SetXTitle("padrow");
213 h->SetZTitle("fADC");
218 //_____________________________________________________________________
219 Bool_t AliTPCCalibKr::IsIROC(Int_t chamber)
222 // returns kTRUE if IROCs and kFALSE if OROCs
224 if(chamber>=0 && chamber<36) return kTRUE;
229 //_____________________________________________________________________
230 Bool_t AliTPCCalibKr::IsCSide(Int_t chamber)
233 // returns kTRUE if C side and kFALSE if A side
235 if((chamber>=18 && chamber<36) || (chamber>=54 && chamber<72)) return kTRUE;
240 //_____________________________________________________________________
241 Bool_t AliTPCCalibKr::Update(AliTPCclusterKr *cl)
244 // fill existing histograms
247 if (!Accept(cl)) return kFALSE;
248 TH3F *h = (TH3F*)fHistoKrArray.At(cl->GetSec());
249 if(!h) return kFALSE;
251 h->Fill(cl->GetMax().GetRow(),cl->GetMax().GetPad(),cl->GetADCcluster());
256 //_____________________________________________________________________
257 Bool_t AliTPCCalibKr::Accept(AliTPCclusterKr *cl){
262 TCut cutR0("cutR0","fADCcluster/fSize<200"); // adjust it according v seetings -
263 TCut cutR1("cutR1","fADCcluster/fSize>7"); // cosmic tracks and noise removal
264 TCut cutR2("cutR2","fMax.fAdc/fADCcluster<0.4"); // digital noise removal
265 TCut cutR3("cutR3","fMax.fAdc/fADCcluster>0.01"); // noise removal
266 TCut cutS1("cutS1","fSize<200"); // adjust it according v seetings - cosmic tracks
267 TCut cutAll = cutR0+cutR1+cutR2+cutR3+cutS1;
270 if (cl->GetADCcluster()/ Float_t(cl->GetSize()) >200) return kFALSE;
272 if (cl->GetADCcluster()/ Float_t(cl->GetSize()) <7) return kFALSE;
274 if (cl->GetMax().GetAdc()/ Float_t(cl->GetADCcluster()) >0.4) return kFALSE;
276 if (cl->GetMax().GetAdc()/ Float_t(cl->GetADCcluster()) <0.01) return kFALSE;
278 if (cl->GetSize()>200) return kFALSE;
279 if (cl->GetSize()<6) return kFALSE;
284 //_____________________________________________________________________
285 TH3F* AliTPCCalibKr::GetHistoKr(Int_t chamber) const
287 // get histograms from fHistoKrArray
288 return (TH3F*) fHistoKrArray.At(chamber);
291 //_____________________________________________________________________
292 void AliTPCCalibKr::Analyse()
295 // analyse the histograms and extract krypton calibration parameters
298 // AliTPCCalPads that will contain the calibration parameters
299 AliTPCCalPad* spectrMeanCalPad = new AliTPCCalPad("spectrMean", "spectrMean");
300 AliTPCCalPad* spectrRMSCalPad = new AliTPCCalPad("spectrRMS", "spectrRMS");
301 AliTPCCalPad* fitMeanCalPad = new AliTPCCalPad("fitMean", "fitMean");
302 AliTPCCalPad* fitRMSCalPad = new AliTPCCalPad("fitRMS", "fitRMS");
303 AliTPCCalPad* fitNormChi2CalPad = new AliTPCCalPad("fitNormChi2", "fitNormChi2");
304 AliTPCCalPad* entriesCalPad = new AliTPCCalPad("entries", "entries");
306 // file stream for debugging purposes
307 TTreeSRedirector* debugStream = new TTreeSRedirector("debugCalibKr.root");
309 // if entries in spectrum less than minEntries, then the fit won't be performed
310 Int_t minEntries = 1; //300;
312 Double_t windowFrac = 0.12;
313 // the 3d histogram will be projected on the pads given by the following window size
314 // set the numbers to 0 if you want to do a pad-by-pad calibration
315 UInt_t rowRadius = 5;
316 UInt_t padRadius = 10;
317 // the step size by which pad and row are incremented is given by the following numbers
318 // set them to 1 if you want the finest granularity
319 UInt_t rowStep = 1; // formerly: 2*rowRadius
320 UInt_t padStep = 1; // formerly: 2*padRadius
322 for (Int_t chamber = 0; chamber < 72; chamber++) {
323 //if (chamber != 71) continue;
324 AliTPCCalROC roc(chamber); // I need this only for GetNrows() and GetNPads()
326 // Usually I would traverse each pad, take the spectrum for its neighbourhood and
327 // obtain the calibration parameters. This takes very long, so instead I assign the same
328 // calibration values to the whole neighbourhood and then go on to the next neighbourhood.
329 UInt_t nRows = roc.GetNrows();
330 for (UInt_t iRow = 0; iRow < nRows; iRow += rowStep) {
331 UInt_t nPads = roc.GetNPads(iRow);
332 //if (iRow >= 10) break;
333 for (UInt_t iPad = 0; iPad < nPads; iPad += padStep) {
334 //if (iPad >= 20) break;
335 TH3F* h = GetHistoKr(chamber);
338 // the 3d histogram will be projected on the pads given by the following bounds
340 Int_t rowLow = iRow - rowRadius;
341 UInt_t rowUp = iRow + rowRadius;
342 Int_t padLow = iPad - padRadius;
343 UInt_t padUp = iPad + padRadius;
344 // if window goes out of chamber
345 if (rowLow < 0) rowLow = 0;
346 if (rowUp >= nRows) rowUp = nRows - 1;
347 if (padLow < 0) padLow = 0;
348 if (padUp >= nPads) padUp = nPads - 1;
350 // project the histogram
351 //TH1D* projH = h->ProjectionZ("projH", rowLow, rowUp, padLow, padUp); // SLOW
352 TH1D* projH = ProjectHisto(h, "projH", rowLow, rowUp, padLow, padUp);
354 // get the number of entries in the spectrum
355 Double_t entries = projH->GetEntries();
356 if (entries < minEntries) { delete projH; continue; }
358 // get the two calibration parameters mean of spectrum and RMS of spectrum
359 Double_t histMean = projH->GetMean();
360 Double_t histRMS = (histMean != 0) ? projH->GetRMS() / histMean : 0.;
362 // find maximum in spectrum to define a range (given by windowFrac) for which a Gauss is fitted
363 Double_t maxEntries = projH->GetBinCenter(projH->GetMaximumBin());
364 Int_t fitResult = projH->Fit("gaus", "Q0", "", (1.-windowFrac) * maxEntries, (1.+windowFrac) * maxEntries);
365 if (fitResult != 0) {
366 Error("Analyse", "Error while fitting spectrum for chamber %i, rows %i - %i, pads %i - %i.", chamber, rowLow, rowUp, padLow, padUp);
371 // get the two calibration parameters mean of gauss fit and sigma of gauss fit
372 TF1* gausFit = projH->GetFunction("gaus");
373 Double_t fitMean = gausFit->GetParameter(1);
374 Double_t fitRMS = gausFit->GetParameter(2);
375 Int_t numberFitPoints = gausFit->GetNumberFitPoints();
376 if (numberFitPoints == 0) continue;
377 Double_t fitNormChi2 = gausFit->GetChisquare() / numberFitPoints;
380 if (fitMean <= 0) continue;
381 //printf("[ch%i r%i, p%i] entries = %f, maxEntries = %f, fitMean = %f, fitRMS = %f\n", chamber, iRow, iPad, entries, maxEntries, fitMean, fitRMS);
383 // write the calibration parameters for each pad that the 3d histogram was projected onto
384 // (with considering the step size) to the CalPads
385 // rowStep (padStep) odd: round down s/2 and fill this # of rows (pads) in both directions
386 // rowStep (padStep) even: fill s/2 rows (pads) in ascending direction, s/2-1 in descending direction
387 for (Int_t r = iRow - (rowStep/2 - (rowStep+1)%2); r <= (Int_t)(iRow + rowStep/2); r++) {
388 if (r < 0 || r >= (Int_t)nRows) continue;
389 UInt_t nPads = roc.GetNPads(r);
390 for (Int_t p = iPad - (padStep/2 - (padStep+1)%2); p <= (Int_t)(iPad + padStep/2); p++) {
391 if (p < 0 || p >= (Int_t)nPads) continue;
392 spectrMeanCalPad->GetCalROC(chamber)->SetValue(r, p, histMean);
393 spectrRMSCalPad->GetCalROC(chamber)->SetValue(r, p, histRMS);
394 fitMeanCalPad->GetCalROC(chamber)->SetValue(r, p, fitMean);
395 fitRMSCalPad->GetCalROC(chamber)->SetValue(r, p, fitRMS);
396 fitNormChi2CalPad->GetCalROC(chamber)->SetValue(r, p, fitNormChi2);
397 entriesCalPad->GetCalROC(chamber)->SetValue(r, p, entries);
399 (*debugStream) << "calibKr" <<
400 "sector=" << chamber << // chamber number
401 "row=" << r << // row number
402 "pad=" << p << // pad number
403 "histMean=" << histMean << // mean of the spectrum
404 "histRMS=" << histRMS << // RMS of the spectrum divided by the mean
405 "fitMean=" << fitMean << // Gauss fitted mean of the 41.6 keV Kr peak
406 "fitRMS=" << fitRMS << // Gauss fitted sigma of the 41.6 keV Kr peak
407 "fitNormChi2" << fitNormChi2 << // normalized chi square of the Gauss fit
408 "entries=" << entries << // number of entries for the spectrum
416 TFile f("calibKr.root", "recreate");
417 spectrMeanCalPad->Write();
418 spectrRMSCalPad->Write();
419 fitMeanCalPad->Write();
420 fitRMSCalPad->Write();
421 fitNormChi2CalPad->Write();
422 entriesCalPad->Write();
424 delete spectrMeanCalPad;
425 delete spectrRMSCalPad;
426 delete fitMeanCalPad;
428 delete fitNormChi2CalPad;
429 delete entriesCalPad;
433 //_____________________________________________________________________
434 TH1D* AliTPCCalibKr::ProjectHisto(TH3F* histo3D, const char* name, Int_t xMin, Int_t xMax, Int_t yMin, Int_t yMax)
436 // project the z-axis of a 3d histo to a specific range of the x- and y-axes,
437 // replaces TH3F::ProjectZ() to gain more speed
439 TAxis* xAxis = histo3D->GetXaxis();
440 TAxis* yAxis = histo3D->GetYaxis();
441 TAxis* zAxis = histo3D->GetZaxis();
442 Double_t zMinVal = zAxis->GetXmin();
443 Double_t zMaxVal = zAxis->GetXmax();
445 Int_t nBinsZ = zAxis->GetNbins();
446 TH1D* projH = new TH1D(name, name, nBinsZ, zMinVal, zMaxVal);
448 Int_t nx = xAxis->GetNbins()+2;
449 Int_t ny = yAxis->GetNbins()+2;
451 Double_t entries = 0.;
452 for (Int_t x = xMin; x <= xMax; x++) {
453 for (Int_t y = yMin; y <= yMax; y++) {
454 for (Int_t z = 0; z <= nBinsZ+1; z++) {
455 bin = x + nx * (y + ny * z);
456 Double_t val = histo3D->GetBinContent(bin);
457 projH->Fill(zAxis->GetBinCenter(z), val);
462 projH->SetEntries((Long64_t)entries);
466 //_____________________________________________________________________
467 Long64_t AliTPCCalibKr::Merge(TCollection* list) {
470 cout << "Merge " << endl;
478 TIterator* iter = list->MakeIterator();
483 while((obj = iter->Next()) != 0)
485 AliTPCCalibKr* entry = dynamic_cast<AliTPCCalibKr*>(obj);
486 if (entry == 0) continue;
488 for(int i=0; i<72; ++i) {
489 if(IsCSide(i) == kTRUE && bCSide == kTRUE) {
490 ((TH3F*)fHistoKrArray.At(i))->Add( ((TH3F*)entry->fHistoKrArray.At(i)) );
493 if(IsCSide(i) == kFALSE && bASide == kTRUE) {
494 ((TH3F*)fHistoKrArray.At(i))->Add( ((TH3F*)entry->fHistoKrArray.At(i)) );