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1c53abe2 1/**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
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 **************************************************************************/
15
88cb7938 16/* $Id$ */
1c53abe2 17
18//-------------------------------------------------------
19// Implementation of the TPC clusterer
20//
21// Origin: Marian Ivanov
22//-------------------------------------------------------
23
d7a11555 24#include "AliTPCReconstructor.h"
1c53abe2 25#include "AliTPCclustererMI.h"
26#include "AliTPCclusterMI.h"
27#include <TObjArray.h>
28#include <TFile.h>
65c045f0 29#include "TGraph.h"
30#include "TF1.h"
31#include "TRandom.h"
32#include "AliMathBase.h"
33
1c53abe2 34#include "AliTPCClustersArray.h"
35#include "AliTPCClustersRow.h"
36#include "AliDigits.h"
37#include "AliSimDigits.h"
38#include "AliTPCParam.h"
194b0609 39#include "AliTPCRecoParam.h"
f8aae377 40#include "AliRawReader.h"
41#include "AliTPCRawStream.h"
42#include "AliRunLoader.h"
43#include "AliLoader.h"
cc5e9db0 44#include "Riostream.h"
1c53abe2 45#include <TTree.h>
13116aec 46#include "AliTPCcalibDB.h"
47#include "AliTPCCalPad.h"
48#include "AliTPCCalROC.h"
65c045f0 49#include "TTreeStream.h"
50#include "AliLog.h"
13116aec 51
52
1c53abe2 53ClassImp(AliTPCclustererMI)
54
55
56
194b0609 57 AliTPCclustererMI::AliTPCclustererMI(const AliTPCParam* par, const AliTPCRecoParam * recoParam)
1c53abe2 58{
22c352f8 59 fIsOldRCUFormat = kFALSE;
1c53abe2 60 fInput =0;
61 fOutput=0;
f8aae377 62 fParam = par;
194b0609 63 if (recoParam) {
64 fRecoParam = recoParam;
65 }else{
66 //set default parameters if not specified
67 fRecoParam = AliTPCReconstructor::GetRecoParam();
68 if (!fRecoParam) fRecoParam = AliTPCRecoParam::GetLowFluxParam();
69 }
65c045f0 70 fDebugStreamer = new TTreeSRedirector("TPCsignal.root");
71 fAmplitudeHisto = 0;
72}
73
74AliTPCclustererMI::~AliTPCclustererMI(){
75 DumpHistos();
76 if (fAmplitudeHisto) delete fAmplitudeHisto;
77 if (fDebugStreamer) delete fDebugStreamer;
1c53abe2 78}
22c352f8 79
1c53abe2 80void AliTPCclustererMI::SetInput(TTree * tree)
81{
82 //
83 // set input tree with digits
84 //
85 fInput = tree;
86 if (!fInput->GetBranch("Segment")){
87 cerr<<"AliTPC::Digits2Clusters(): no porper input tree !\n";
88 fInput=0;
89 return;
90 }
91}
92
93void AliTPCclustererMI::SetOutput(TTree * tree)
94{
95 //
96 //
97 fOutput= tree;
98 AliTPCClustersRow clrow;
99 AliTPCClustersRow *pclrow=&clrow;
100 clrow.SetClass("AliTPCclusterMI");
101 clrow.SetArray(1); // to make Clones array
102 fOutput->Branch("Segment","AliTPCClustersRow",&pclrow,32000,200);
103}
104
105
106Float_t AliTPCclustererMI::GetSigmaY2(Int_t iz){
107 // sigma y2 = in digits - we don't know the angle
753797ce 108 Float_t z = iz*fParam->GetZWidth()+fParam->GetNTBinsL1()*fParam->GetZWidth();
1c53abe2 109 Float_t sd2 = (z*fParam->GetDiffL()*fParam->GetDiffL())/
110 (fPadWidth*fPadWidth);
111 Float_t sres = 0.25;
112 Float_t res = sd2+sres;
113 return res;
114}
115
116
117Float_t AliTPCclustererMI::GetSigmaZ2(Int_t iz){
118 //sigma z2 = in digits - angle estimated supposing vertex constraint
753797ce 119 Float_t z = iz*fZWidth+fParam->GetNTBinsL1()*fParam->GetZWidth();
1c53abe2 120 Float_t sd2 = (z*fParam->GetDiffL()*fParam->GetDiffL())/(fZWidth*fZWidth);
121 Float_t angular = fPadLength*(fParam->GetZLength()-z)/(fRx*fZWidth);
122 angular*=angular;
123 angular/=12.;
124 Float_t sres = fParam->GetZSigma()/fZWidth;
125 sres *=sres;
126 Float_t res = angular +sd2+sres;
127 return res;
128}
129
13116aec 130void AliTPCclustererMI::MakeCluster(Int_t k,Int_t max,Float_t *bins, UInt_t /*m*/,
1c53abe2 131AliTPCclusterMI &c)
132{
133 Int_t i0=k/max; //central pad
134 Int_t j0=k%max; //central time bin
135
136 // set pointers to data
137 //Int_t dummy[5] ={0,0,0,0,0};
13116aec 138 Float_t * matrix[5]; //5x5 matrix with digits - indexing i = 0 ..4 j = -2..2
139 Float_t * resmatrix[5];
1c53abe2 140 for (Int_t di=-2;di<=2;di++){
141 matrix[di+2] = &bins[k+di*max];
142 resmatrix[di+2] = &fResBins[k+di*max];
143 }
144 //build matrix with virtual charge
145 Float_t sigmay2= GetSigmaY2(j0);
146 Float_t sigmaz2= GetSigmaZ2(j0);
147
148 Float_t vmatrix[5][5];
149 vmatrix[2][2] = matrix[2][0];
150 c.SetType(0);
6c024a0e 151 c.SetMax((UShort_t)(vmatrix[2][2])); // write maximal amplitude
1c53abe2 152 for (Int_t di =-1;di <=1;di++)
153 for (Int_t dj =-1;dj <=1;dj++){
154 Float_t amp = matrix[di+2][dj];
155 if ( (amp<2) && (fLoop<2)){
156 // if under threshold - calculate virtual charge
157 Float_t ratio = TMath::Exp(-1.2*TMath::Abs(di)/sigmay2)*TMath::Exp(-1.2*TMath::Abs(dj)/sigmaz2);
158 amp = ((matrix[2][0]-2)*(matrix[2][0]-2)/(matrix[-di+2][-dj]+2))*ratio;
159 if (amp>2) amp = 2;
160 vmatrix[2+di][2+dj]=amp;
161 vmatrix[2+2*di][2+2*dj]=0;
162 if ( (di*dj)!=0){
163 //DIAGONAL ELEMENTS
164 vmatrix[2+2*di][2+dj] =0;
165 vmatrix[2+di][2+2*dj] =0;
166 }
167 continue;
168 }
169 if (amp<4){
170 //if small amplitude - below 2 x threshold - don't consider other one
171 vmatrix[2+di][2+dj]=amp;
172 vmatrix[2+2*di][2+2*dj]=0; // don't take to the account next bin
173 if ( (di*dj)!=0){
174 //DIAGONAL ELEMENTS
175 vmatrix[2+2*di][2+dj] =0;
176 vmatrix[2+di][2+2*dj] =0;
177 }
178 continue;
179 }
180 //if bigger then take everything
181 vmatrix[2+di][2+dj]=amp;
182 vmatrix[2+2*di][2+2*dj]= matrix[2*di+2][2*dj] ;
183 if ( (di*dj)!=0){
184 //DIAGONAL ELEMENTS
185 vmatrix[2+2*di][2+dj] = matrix[2*di+2][dj];
186 vmatrix[2+di][2+2*dj] = matrix[2+di][dj*2];
187 }
188 }
189
190
191
192 Float_t sumw=0;
193 Float_t sumiw=0;
194 Float_t sumi2w=0;
195 Float_t sumjw=0;
196 Float_t sumj2w=0;
197 //
198 for (Int_t i=-2;i<=2;i++)
199 for (Int_t j=-2;j<=2;j++){
200 Float_t amp = vmatrix[i+2][j+2];
201
202 sumw += amp;
203 sumiw += i*amp;
204 sumi2w += i*i*amp;
205 sumjw += j*amp;
206 sumj2w += j*j*amp;
207 }
208 //
209 Float_t meani = sumiw/sumw;
210 Float_t mi2 = sumi2w/sumw-meani*meani;
211 Float_t meanj = sumjw/sumw;
212 Float_t mj2 = sumj2w/sumw-meanj*meanj;
213 //
214 Float_t ry = mi2/sigmay2;
215 Float_t rz = mj2/sigmaz2;
216
217 //
218 if ( ( (ry<0.6) || (rz<0.6) ) && fLoop==2) return;
194b0609 219 if ( (ry <1.2) && (rz<1.2) || (!fRecoParam->GetDoUnfold())) {
220 //
221 //if cluster looks like expected or Unfolding not switched on
222 //standard COG is used
1c53abe2 223 //+1.2 deviation from expected sigma accepted
224 // c.fMax = FitMax(vmatrix,meani,meanj,TMath::Sqrt(sigmay2),TMath::Sqrt(sigmaz2));
225
226 meani +=i0;
227 meanj +=j0;
228 //set cluster parameters
229 c.SetQ(sumw);
230 c.SetY(meani*fPadWidth);
231 c.SetZ(meanj*fZWidth);
232 c.SetSigmaY2(mi2);
233 c.SetSigmaZ2(mj2);
234 AddCluster(c);
235 //remove cluster data from data
236 for (Int_t di=-2;di<=2;di++)
237 for (Int_t dj=-2;dj<=2;dj++){
13116aec 238 resmatrix[di+2][dj] -= vmatrix[di+2][dj+2];
1c53abe2 239 if (resmatrix[di+2][dj]<0) resmatrix[di+2][dj]=0;
240 }
241 resmatrix[2][0] =0;
242 return;
243 }
244 //
245 //unfolding when neccessary
246 //
247
13116aec 248 Float_t * matrix2[7]; //7x7 matrix with digits - indexing i = 0 ..6 j = -3..3
249 Float_t dummy[7]={0,0,0,0,0,0};
1c53abe2 250 for (Int_t di=-3;di<=3;di++){
251 matrix2[di+3] = &bins[k+di*max];
252 if ((k+di*max)<3) matrix2[di+3] = &dummy[3];
253 if ((k+di*max)>fMaxBin-3) matrix2[di+3] = &dummy[3];
254 }
255 Float_t vmatrix2[5][5];
256 Float_t sumu;
257 Float_t overlap;
258 UnfoldCluster(matrix2,vmatrix2,meani,meanj,sumu,overlap);
259 //
260 // c.fMax = FitMax(vmatrix2,meani,meanj,TMath::Sqrt(sigmay2),TMath::Sqrt(sigmaz2));
261 meani +=i0;
262 meanj +=j0;
263 //set cluster parameters
264 c.SetQ(sumu);
265 c.SetY(meani*fPadWidth);
266 c.SetZ(meanj*fZWidth);
267 c.SetSigmaY2(mi2);
268 c.SetSigmaZ2(mj2);
269 c.SetType(Char_t(overlap)+1);
270 AddCluster(c);
271
272 //unfolding 2
273 meani-=i0;
274 meanj-=j0;
275 if (gDebug>4)
276 printf("%f\t%f\n", vmatrix2[2][2], vmatrix[2][2]);
277}
278
279
280
13116aec 281void AliTPCclustererMI::UnfoldCluster(Float_t * matrix2[7], Float_t recmatrix[5][5], Float_t & meani, Float_t & meanj,
1c53abe2 282 Float_t & sumu, Float_t & overlap )
283{
284 //
285 //unfold cluster from input matrix
286 //data corresponding to cluster writen in recmatrix
287 //output meani and meanj
288
289 //take separatelly y and z
290
291 Float_t sum3i[7] = {0,0,0,0,0,0,0};
292 Float_t sum3j[7] = {0,0,0,0,0,0,0};
293
294 for (Int_t k =0;k<7;k++)
295 for (Int_t l = -1; l<=1;l++){
296 sum3i[k]+=matrix2[k][l];
297 sum3j[k]+=matrix2[l+3][k-3];
298 }
299 Float_t mratio[3][3]={{1,1,1},{1,1,1},{1,1,1}};
300 //
301 //unfold y
302 Float_t sum3wi = 0; //charge minus overlap
303 Float_t sum3wio = 0; //full charge
304 Float_t sum3iw = 0; //sum for mean value
305 for (Int_t dk=-1;dk<=1;dk++){
306 sum3wio+=sum3i[dk+3];
307 if (dk==0){
308 sum3wi+=sum3i[dk+3];
309 }
310 else{
311 Float_t ratio =1;
312 if ( ( ((sum3i[dk+3]+3)/(sum3i[3]-3))+1 < (sum3i[2*dk+3]-3)/(sum3i[dk+3]+3))||
313 sum3i[dk+3]<=sum3i[2*dk+3] && sum3i[dk+3]>2 ){
314 Float_t xm2 = sum3i[-dk+3];
315 Float_t xm1 = sum3i[+3];
316 Float_t x1 = sum3i[2*dk+3];
317 Float_t x2 = sum3i[3*dk+3];
cc5e9db0 318 Float_t w11 = TMath::Max((Float_t)(4.*xm1-xm2),(Float_t)0.000001);
319 Float_t w12 = TMath::Max((Float_t)(4 *x1 -x2),(Float_t)0.);
1c53abe2 320 ratio = w11/(w11+w12);
321 for (Int_t dl=-1;dl<=1;dl++)
322 mratio[dk+1][dl+1] *= ratio;
323 }
324 Float_t amp = sum3i[dk+3]*ratio;
325 sum3wi+=amp;
326 sum3iw+= dk*amp;
327 }
328 }
329 meani = sum3iw/sum3wi;
330 Float_t overlapi = (sum3wio-sum3wi)/sum3wio;
331
332
333
334 //unfold z
335 Float_t sum3wj = 0; //charge minus overlap
336 Float_t sum3wjo = 0; //full charge
337 Float_t sum3jw = 0; //sum for mean value
338 for (Int_t dk=-1;dk<=1;dk++){
339 sum3wjo+=sum3j[dk+3];
340 if (dk==0){
341 sum3wj+=sum3j[dk+3];
342 }
343 else{
344 Float_t ratio =1;
345 if ( ( ((sum3j[dk+3]+3)/(sum3j[3]-3))+1 < (sum3j[2*dk+3]-3)/(sum3j[dk+3]+3)) ||
346 (sum3j[dk+3]<=sum3j[2*dk+3] && sum3j[dk+3]>2)){
347 Float_t xm2 = sum3j[-dk+3];
348 Float_t xm1 = sum3j[+3];
349 Float_t x1 = sum3j[2*dk+3];
350 Float_t x2 = sum3j[3*dk+3];
cc5e9db0 351 Float_t w11 = TMath::Max((Float_t)(4.*xm1-xm2),(Float_t)0.000001);
352 Float_t w12 = TMath::Max((Float_t)(4 *x1 -x2),(Float_t)0.);
1c53abe2 353 ratio = w11/(w11+w12);
354 for (Int_t dl=-1;dl<=1;dl++)
355 mratio[dl+1][dk+1] *= ratio;
356 }
357 Float_t amp = sum3j[dk+3]*ratio;
358 sum3wj+=amp;
359 sum3jw+= dk*amp;
360 }
361 }
362 meanj = sum3jw/sum3wj;
363 Float_t overlapj = (sum3wjo-sum3wj)/sum3wjo;
364 overlap = Int_t(100*TMath::Max(overlapi,overlapj)+3);
365 sumu = (sum3wj+sum3wi)/2.;
366
367 if (overlap ==3) {
368 //if not overlap detected remove everything
369 for (Int_t di =-2; di<=2;di++)
370 for (Int_t dj =-2; dj<=2;dj++){
371 recmatrix[di+2][dj+2] = matrix2[3+di][dj];
372 }
373 }
374 else{
375 for (Int_t di =-1; di<=1;di++)
376 for (Int_t dj =-1; dj<=1;dj++){
377 Float_t ratio =1;
378 if (mratio[di+1][dj+1]==1){
379 recmatrix[di+2][dj+2] = matrix2[3+di][dj];
380 if (TMath::Abs(di)+TMath::Abs(dj)>1){
381 recmatrix[2*di+2][dj+2] = matrix2[3+2*di][dj];
382 recmatrix[di+2][2*dj+2] = matrix2[3+di][2*dj];
383 }
384 recmatrix[2*di+2][2*dj+2] = matrix2[3+2*di][2*dj];
385 }
386 else
387 {
388 //if we have overlap in direction
389 recmatrix[di+2][dj+2] = mratio[di+1][dj+1]* matrix2[3+di][dj];
390 if (TMath::Abs(di)+TMath::Abs(dj)>1){
cc5e9db0 391 ratio = TMath::Min((Float_t)(recmatrix[di+2][dj+2]/(matrix2[3+0*di][1*dj]+1)),(Float_t)1.);
1c53abe2 392 recmatrix[2*di+2][dj+2] = ratio*recmatrix[di+2][dj+2];
393 //
cc5e9db0 394 ratio = TMath::Min((Float_t)(recmatrix[di+2][dj+2]/(matrix2[3+1*di][0*dj]+1)),(Float_t)1.);
1c53abe2 395 recmatrix[di+2][2*dj+2] = ratio*recmatrix[di+2][dj+2];
396 }
397 else{
398 ratio = recmatrix[di+2][dj+2]/matrix2[3][0];
399 recmatrix[2*di+2][2*dj+2] = ratio*recmatrix[di+2][dj+2];
400 }
401 }
402 }
403 }
404 if (gDebug>4)
405 printf("%f\n", recmatrix[2][2]);
406
407}
408
409Float_t AliTPCclustererMI::FitMax(Float_t vmatrix[5][5], Float_t y, Float_t z, Float_t sigmay, Float_t sigmaz)
410{
411 //
412 // estimate max
413 Float_t sumteor= 0;
414 Float_t sumamp = 0;
415
416 for (Int_t di = -1;di<=1;di++)
417 for (Int_t dj = -1;dj<=1;dj++){
418 if (vmatrix[2+di][2+dj]>2){
419 Float_t teor = TMath::Gaus(di,y,sigmay*1.2)*TMath::Gaus(dj,z,sigmaz*1.2);
420 sumteor += teor*vmatrix[2+di][2+dj];
421 sumamp += vmatrix[2+di][2+dj]*vmatrix[2+di][2+dj];
422 }
423 }
424 Float_t max = sumamp/sumteor;
425 return max;
426}
427
428void AliTPCclustererMI::AddCluster(AliTPCclusterMI &c){
429 //
430 // transform cluster to the global coordinata
431 // add the cluster to the array
432 //
433 Float_t meani = c.GetY()/fPadWidth;
434 Float_t meanj = c.GetZ()/fZWidth;
435
436 Int_t ki = TMath::Nint(meani-3);
437 if (ki<0) ki=0;
438 if (ki>=fMaxPad) ki = fMaxPad-1;
439 Int_t kj = TMath::Nint(meanj-3);
440 if (kj<0) kj=0;
441 if (kj>=fMaxTime-3) kj=fMaxTime-4;
442 // ki and kj shifted to "real" coordinata
f8aae377 443 if (fRowDig) {
444 c.SetLabel(fRowDig->GetTrackIDFast(kj,ki,0)-2,0);
445 c.SetLabel(fRowDig->GetTrackIDFast(kj,ki,1)-2,1);
446 c.SetLabel(fRowDig->GetTrackIDFast(kj,ki,2)-2,2);
447 }
1c53abe2 448
449
450 Float_t s2 = c.GetSigmaY2();
451 Float_t w=fParam->GetPadPitchWidth(fSector);
452
453 c.SetSigmaY2(s2*w*w);
454 s2 = c.GetSigmaZ2();
455 w=fZWidth;
456 c.SetSigmaZ2(s2*w*w);
457 c.SetY((meani - 2.5 - 0.5*fMaxPad)*fParam->GetPadPitchWidth(fSector));
458 c.SetZ(fZWidth*(meanj-3));
753797ce 459 c.SetZ(c.GetZ() - 3.*fParam->GetZSigma() + fParam->GetNTBinsL1()*fParam->GetZWidth()); // PASA delay + L1 delay
1c53abe2 460 c.SetZ(fSign*(fParam->GetZLength() - c.GetZ()));
508541c7 461 c.SetX(fRx);
462 c.SetDetector(fSector);
463 c.SetRow(fRow);
464
1c53abe2 465 if (ki<=1 || ki>=fMaxPad-1 || kj==1 || kj==fMaxTime-2) {
466 //c.SetSigmaY2(c.GetSigmaY2()*25.);
467 //c.SetSigmaZ2(c.GetSigmaZ2()*4.);
468 c.SetType(-(c.GetType()+3)); //edge clusters
469 }
470 if (fLoop==2) c.SetType(100);
471
472 TClonesArray * arr = fRowCl->GetArray();
45bcf167 473 // AliTPCclusterMI * cl =
474 new ((*arr)[fNcluster]) AliTPCclusterMI(c);
1c53abe2 475
476 fNcluster++;
477}
478
479
480//_____________________________________________________________________________
f8aae377 481void AliTPCclustererMI::Digits2Clusters()
1c53abe2 482{
483 //-----------------------------------------------------------------
484 // This is a simple cluster finder.
485 //-----------------------------------------------------------------
1c53abe2 486
f8aae377 487 if (!fInput) {
488 Error("Digits2Clusters", "input tree not initialised");
1c53abe2 489 return;
490 }
491
f8aae377 492 if (!fOutput) {
493 Error("Digits2Clusters", "output tree not initialised");
494 return;
1c53abe2 495 }
496
13116aec 497 AliTPCCalPad * gainTPC = AliTPCcalibDB::Instance()->GetPadGainFactor();
498
1c53abe2 499 AliSimDigits digarr, *dummy=&digarr;
500 fRowDig = dummy;
501 fInput->GetBranch("Segment")->SetAddress(&dummy);
502 Stat_t nentries = fInput->GetEntries();
503
f8aae377 504 fMaxTime=fParam->GetMaxTBin()+6; // add 3 virtual time bins before and 3 after
1c53abe2 505
1c53abe2 506 Int_t nclusters = 0;
13116aec 507
1c53abe2 508 for (Int_t n=0; n<nentries; n++) {
509 fInput->GetEvent(n);
508541c7 510 if (!fParam->AdjustSectorRow(digarr.GetID(),fSector,fRow)) {
1c53abe2 511 cerr<<"AliTPC warning: invalid segment ID ! "<<digarr.GetID()<<endl;
512 continue;
513 }
508541c7 514 Int_t row = fRow;
13116aec 515 AliTPCCalROC * gainROC = gainTPC->GetCalROC(fSector); // pad gains per given sector
516
517 //
1c53abe2 518 AliTPCClustersRow *clrow= new AliTPCClustersRow();
519 fRowCl = clrow;
520 clrow->SetClass("AliTPCclusterMI");
521 clrow->SetArray(1);
522
523 clrow->SetID(digarr.GetID());
524 fOutput->GetBranch("Segment")->SetAddress(&clrow);
f8aae377 525 fRx=fParam->GetPadRowRadii(fSector,row);
1c53abe2 526
527
f8aae377 528 const Int_t kNIS=fParam->GetNInnerSector(), kNOS=fParam->GetNOuterSector();
1c53abe2 529 fZWidth = fParam->GetZWidth();
530 if (fSector < kNIS) {
f8aae377 531 fMaxPad = fParam->GetNPadsLow(row);
1c53abe2 532 fSign = (fSector < kNIS/2) ? 1 : -1;
f8aae377 533 fPadLength = fParam->GetPadPitchLength(fSector,row);
534 fPadWidth = fParam->GetPadPitchWidth();
1c53abe2 535 } else {
f8aae377 536 fMaxPad = fParam->GetNPadsUp(row);
1c53abe2 537 fSign = ((fSector-kNIS) < kNOS/2) ? 1 : -1;
f8aae377 538 fPadLength = fParam->GetPadPitchLength(fSector,row);
539 fPadWidth = fParam->GetPadPitchWidth();
1c53abe2 540 }
541
542
543 fMaxBin=fMaxTime*(fMaxPad+6); // add 3 virtual pads before and 3 after
13116aec 544 fBins =new Float_t[fMaxBin];
545 fResBins =new Float_t[fMaxBin]; //fBins with residuals after 1 finder loop
546 memset(fBins,0,sizeof(Float_t)*fMaxBin);
547 memset(fResBins,0,sizeof(Float_t)*fMaxBin);
1c53abe2 548
549 if (digarr.First()) //MI change
550 do {
13116aec 551 Float_t dig=digarr.CurrentDigit();
f8aae377 552 if (dig<=fParam->GetZeroSup()) continue;
1c53abe2 553 Int_t j=digarr.CurrentRow()+3, i=digarr.CurrentColumn()+3;
9d4f75a9 554 Float_t gain = gainROC->GetValue(row,digarr.CurrentColumn());
13116aec 555 fBins[i*fMaxTime+j]=dig/gain;
1c53abe2 556 } while (digarr.Next());
557 digarr.ExpandTrackBuffer();
558
f8aae377 559 FindClusters();
8569a2b0 560
561 fOutput->Fill();
88cb7938 562 delete clrow;
563 nclusters+=fNcluster;
8569a2b0 564 delete[] fBins;
565 delete[] fResBins;
88cb7938 566 }
f8aae377 567
19dd5b2f 568 Info("Digits2Clusters", "Number of found clusters : %d", nclusters);
f8aae377 569}
570
571void AliTPCclustererMI::Digits2Clusters(AliRawReader* rawReader)
572{
573//-----------------------------------------------------------------
22c352f8 574// This is a cluster finder for the TPC raw data.
575// The method assumes NO ordering of the altro channels.
576// The pedestal subtraction can be switched on and off
577// using an option of the TPC reconstructor
f8aae377 578//-----------------------------------------------------------------
579
580 if (!fOutput) {
581 Error("Digits2Clusters", "output tree not initialised");
582 return;
583 }
584
f8aae377 585 fRowDig = NULL;
586
22c352f8 587 AliTPCCalPad * gainTPC = AliTPCcalibDB::Instance()->GetPadGainFactor();
588
f8aae377 589 Int_t nclusters = 0;
88cb7938 590
f8aae377 591 fMaxTime = fParam->GetMaxTBin() + 6; // add 3 virtual time bins before and 3 after
592 const Int_t kNIS = fParam->GetNInnerSector();
593 const Int_t kNOS = fParam->GetNOuterSector();
594 const Int_t kNS = kNIS + kNOS;
595 fZWidth = fParam->GetZWidth();
596 Int_t zeroSup = fParam->GetZeroSup();
597
22c352f8 598 Float_t** allBins = NULL;
599 Float_t** allBinsRes = NULL;
f8aae377 600
22c352f8 601 // Loop over sectors
602 for(fSector = 0; fSector < kNS; fSector++) {
f8aae377 603
22c352f8 604 AliTPCCalROC * gainROC = gainTPC->GetCalROC(fSector); // pad gains per given sector
605
606 Int_t nRows = 0;
607 Int_t nDDLs = 0, indexDDL = 0;
608 if (fSector < kNIS) {
609 nRows = fParam->GetNRowLow();
610 fSign = (fSector < kNIS/2) ? 1 : -1;
611 nDDLs = 2;
612 indexDDL = fSector * 2;
613 }
614 else {
615 nRows = fParam->GetNRowUp();
616 fSign = ((fSector-kNIS) < kNOS/2) ? 1 : -1;
617 nDDLs = 4;
618 indexDDL = (fSector-kNIS) * 4 + kNIS * 2;
619 }
620
621 allBins = new Float_t*[nRows];
622 allBinsRes = new Float_t*[nRows];
623
624 for (Int_t iRow = 0; iRow < nRows; iRow++) {
625 Int_t maxPad;
626 if (fSector < kNIS)
627 maxPad = fParam->GetNPadsLow(iRow);
628 else
629 maxPad = fParam->GetNPadsUp(iRow);
630
631 Int_t maxBin = fMaxTime*(maxPad+6); // add 3 virtual pads before and 3 after
632 allBins[iRow] = new Float_t[maxBin];
633 allBinsRes[iRow] = new Float_t[maxBin];
634 memset(allBins[iRow],0,sizeof(Float_t)*maxBin);
635 memset(allBinsRes[iRow],0,sizeof(Float_t)*maxBin);
636 }
637
638 // Loas the raw data for corresponding DDLs
639 rawReader->Reset();
640 AliTPCRawStream input(rawReader);
641 input.SetOldRCUFormat(fIsOldRCUFormat);
362c9d61 642 rawReader->Select("TPC",indexDDL,indexDDL+nDDLs-1);
f8aae377 643
22c352f8 644 // Begin loop over altro data
645 while (input.Next()) {
646
647 if (input.GetSector() != fSector)
648 AliFatal(Form("Sector index mismatch ! Expected (%d), but got (%d) !",fSector,input.GetSector()));
649
194b0609 650 if (input.GetTime() < AliTPCReconstructor::GetRecoParam()->GetFirstBin()) continue;
651 if (input.GetTime() > AliTPCReconstructor::GetRecoParam()->GetLastBin()) continue;
22c352f8 652
653 Int_t iRow = input.GetRow();
654 if (iRow < 0 || iRow >= nRows)
655 AliFatal(Form("Pad-row index (%d) outside the range (%d -> %d) !",
656 iRow, 0, nRows -1));
657
658 Int_t iPad = input.GetPad() + 3;
659
660 Int_t maxPad;
661 if (fSector < kNIS)
662 maxPad = fParam->GetNPadsLow(iRow);
663 else
664 maxPad = fParam->GetNPadsUp(iRow);
665
666 if (input.GetPad() < 0 || input.GetPad() >= maxPad)
667 AliFatal(Form("Pad index (%d) outside the range (%d -> %d) !",
668 input.GetPad(), 0, maxPad -1));
669
670 Int_t iTimeBin = input.GetTime() + 3;
671 if ( input.GetTime() < 0 || input.GetTime() >= fParam->GetMaxTBin())
672 AliFatal(Form("Timebin index (%d) outside the range (%d -> %d) !",
673 input.GetTime(), 0, fParam->GetMaxTBin() -1));
674
675 Int_t maxBin = fMaxTime*(maxPad+6); // add 3 virtual pads before and 3 after
676
677 if (((iPad*fMaxTime+iTimeBin) >= maxBin) ||
678 ((iPad*fMaxTime+iTimeBin) < 0))
679 AliFatal(Form("Index outside the allowed range"
680 " Sector=%d Row=%d Pad=%d Timebin=%d"
681 " (Max.index=%d)",fSector,iRow,iPad,iTimeBin,maxBin));
682
683 Float_t signal = input.GetSignal();
194b0609 684 // if (!fPedSubtraction && signal <= zeroSup) continue;
685 if (!fRecoParam->GetCalcPedestal() && signal <= zeroSup) continue;
22c352f8 686
687 Float_t gain = gainROC->GetValue(iRow,input.GetPad());
688 allBins[iRow][iPad*fMaxTime+iTimeBin] = signal/gain;
65c045f0 689 allBins[iRow][iPad*fMaxTime+0] = 1; // pad with signal
22c352f8 690 } // End of the loop over altro data
691
692 // Now loop over rows and perform pedestal subtraction
194b0609 693 // if (fPedSubtraction) {
694 if (fRecoParam->GetCalcPedestal()) {
22c352f8 695 for (Int_t iRow = 0; iRow < nRows; iRow++) {
696 Int_t maxPad;
697 if (fSector < kNIS)
698 maxPad = fParam->GetNPadsLow(iRow);
699 else
700 maxPad = fParam->GetNPadsUp(iRow);
701
702 for (Int_t iPad = 0; iPad < maxPad + 6; iPad++) {
65c045f0 703 if (allBins[iRow][iPad*fMaxTime+0] !=1) continue; // no data
22c352f8 704 Float_t *p = &allBins[iRow][iPad*fMaxTime+3];
65c045f0 705 //Float_t pedestal = TMath::Median(fMaxTime, p);
706 Int_t id[3] = {fSector, iRow, iPad-3};
707 Float_t pedestal = ProcesSignal(p, fMaxTime, id);
22c352f8 708 for (Int_t iTimeBin = 0; iTimeBin < fMaxTime; iTimeBin++) {
709 allBins[iRow][iPad*fMaxTime+iTimeBin] -= pedestal;
710 if (allBins[iRow][iPad*fMaxTime+iTimeBin] < zeroSup)
711 allBins[iRow][iPad*fMaxTime+iTimeBin] = 0;
712 }
713 }
f8aae377 714 }
22c352f8 715 }
716
717 // Now loop over rows and find clusters
718 for (fRow = 0; fRow < nRows; fRow++) {
719 fRowCl = new AliTPCClustersRow;
720 fRowCl->SetClass("AliTPCclusterMI");
721 fRowCl->SetArray(1);
722 fRowCl->SetID(fParam->GetIndex(fSector, fRow));
723 fOutput->GetBranch("Segment")->SetAddress(&fRowCl);
724
725 fRx = fParam->GetPadRowRadii(fSector, fRow);
726 fPadLength = fParam->GetPadPitchLength(fSector, fRow);
f8aae377 727 fPadWidth = fParam->GetPadPitchWidth();
22c352f8 728 if (fSector < kNIS)
729 fMaxPad = fParam->GetNPadsLow(fRow);
730 else
731 fMaxPad = fParam->GetNPadsUp(fRow);
f8aae377 732 fMaxBin = fMaxTime*(fMaxPad+6); // add 3 virtual pads before and 3 after
22c352f8 733
734 fBins = allBins[fRow];
735 fResBins = allBinsRes[fRow];
736
737 FindClusters();
738
739 fOutput->Fill();
740 delete fRowCl;
741 nclusters += fNcluster;
742 } // End of loop to find clusters
743
744
745 for (Int_t iRow = 0; iRow < nRows; iRow++) {
746 delete [] allBins[iRow];
747 delete [] allBinsRes[iRow];
f8aae377 748 }
749
22c352f8 750 delete [] allBins;
751 delete [] allBinsRes;
f8aae377 752
22c352f8 753 } // End of loop over sectors
f8aae377 754
f8aae377 755 Info("Digits2Clusters", "Number of found clusters : %d\n", nclusters);
22c352f8 756
f8aae377 757}
758
759void AliTPCclustererMI::FindClusters()
760{
761 //add virtual charge at the edge
762 for (Int_t i=0; i<fMaxTime; i++){
763 Float_t amp1 = fBins[i+3*fMaxTime];
764 Float_t amp0 =0;
765 if (amp1>0){
766 Float_t amp2 = fBins[i+4*fMaxTime];
767 if (amp2==0) amp2=0.5;
768 Float_t sigma2 = GetSigmaY2(i);
769 amp0 = (amp1*amp1/amp2)*TMath::Exp(-1./sigma2);
770 if (gDebug>4) printf("\n%f\n",amp0);
771 }
13116aec 772 fBins[i+2*fMaxTime] = amp0;
f8aae377 773 amp0 = 0;
774 amp1 = fBins[(fMaxPad+2)*fMaxTime+i];
775 if (amp1>0){
776 Float_t amp2 = fBins[i+(fMaxPad+1)*fMaxTime];
777 if (amp2==0) amp2=0.5;
778 Float_t sigma2 = GetSigmaY2(i);
779 amp0 = (amp1*amp1/amp2)*TMath::Exp(-1./sigma2);
780 if (gDebug>4) printf("\n%f\n",amp0);
781 }
13116aec 782 fBins[(fMaxPad+3)*fMaxTime+i] = amp0;
f8aae377 783 }
784
785// memcpy(fResBins,fBins, fMaxBin*2);
786 memcpy(fResBins,fBins, fMaxBin);
787 //
788 fNcluster=0;
789 //first loop - for "gold cluster"
790 fLoop=1;
13116aec 791 Float_t *b=&fBins[-1]+2*fMaxTime;
194b0609 792 Int_t crtime = Int_t((fParam->GetZLength()-fRecoParam->GetCtgRange()*fRx)/fZWidth-fParam->GetNTBinsL1()-5);
f8aae377 793
794 for (Int_t i=2*fMaxTime; i<fMaxBin-2*fMaxTime; i++) {
795 b++;
796 if (*b<8) continue; //threshold form maxima
797 if (i%fMaxTime<crtime) {
798 Int_t delta = -(i%fMaxTime)+crtime;
799 b+=delta;
800 i+=delta;
801 continue;
802 }
803
804 if (!IsMaximum(*b,fMaxTime,b)) continue;
805 AliTPCclusterMI c;
806 Int_t dummy=0;
807 MakeCluster(i, fMaxTime, fBins, dummy,c);
808 //}
809 }
810 //memcpy(fBins,fResBins, fMaxBin*2);
811 //second loop - for rest cluster
812 /*
813 fLoop=2;
814 b=&fResBins[-1]+2*fMaxTime;
815 for (Int_t i=2*fMaxTime; i<fMaxBin-2*fMaxTime; i++) {
816 b++;
817 if (*b<25) continue; // bigger threshold for maxima
818 if (!IsMaximum(*b,fMaxTime,b)) continue;
819 AliTPCclusterMI c;
820 Int_t dummy;
821 MakeCluster(i, fMaxTime, fResBins, dummy,c);
822 //}
823 }
824 */
8569a2b0 825}
65c045f0 826
827
828Double_t AliTPCclustererMI::ProcesSignal(Float_t *signal, Int_t nchannels, Int_t id[3]){
829 //
830 // process signal on given pad - + streaming of additional information in special mode
831 //
832 // id[0] - sector
833 // id[1] - row
834 // id[2] - pad
835 Int_t offset =100;
194b0609 836 Float_t kMin =fRecoParam->GetDumpAmplitudeMin(); // minimal signal to be dumped
65c045f0 837 Double_t median = TMath::Median(nchannels-offset, &(signal[offset]));
838 if (AliLog::GetDebugLevel("","AliTPCclustererMI")==0) return median;
839 //
840
841 Double_t mean = TMath::Mean(nchannels-offset, &(signal[offset]));
842 Double_t rms = TMath::RMS(nchannels-offset, &(signal[offset]));
843 Double_t *dsignal = new Double_t[nchannels];
844 Double_t *dtime = new Double_t[nchannels];
845 Float_t max = 0;
846 Float_t maxPos = 0;
847 for (Int_t i=0; i<nchannels; i++){
848 dtime[i] = i;
849 dsignal[i] = signal[i];
850 if (signal[i]>max && i <fMaxTime-100) { // temporary remove spike signals at the end
851 max = signal[i];
852 maxPos = i;
853 }
854 }
855
194b0609 856 Double_t mean06=0, mean09=0;
857 Double_t rms06=0, rms09=0;
65c045f0 858 AliMathBase::EvaluateUni(nchannels-offset, &(dsignal[offset]), mean06, rms06, int(0.6*(nchannels-offset)));
65c045f0 859 AliMathBase::EvaluateUni(nchannels-offset, &(dsignal[offset]), mean09, rms09, int(0.9*(nchannels-offset)));
860
861 //
862 UInt_t uid[3] = {UInt_t(id[0]),UInt_t(id[1]),UInt_t(id[2])};
863 if (uid[0]< AliTPCROC::Instance()->GetNSectors()
864 && uid[1]< AliTPCROC::Instance()->GetNRows(uid[0]) &&
865 uid[2] < AliTPCROC::Instance()->GetNPads(uid[0], uid[1])){
866 if (!fAmplitudeHisto){
867 fAmplitudeHisto = new TObjArray(72);
868 }
869 TObjArray * sectorArray = (TObjArray*)fAmplitudeHisto->UncheckedAt(uid[0]);
870 if (!sectorArray){
871 Int_t npads = AliTPCROC::Instance()->GetNChannels(uid[0]);
872 sectorArray = new TObjArray(npads);
873 fAmplitudeHisto->AddAt(sectorArray, uid[0]);
874 }
875 Int_t position = uid[2]+ AliTPCROC::Instance()->GetRowIndexes(uid[0])[uid[1]];
876 TH1F * histo = (TH1F*)sectorArray->UncheckedAt(position);
877 if (!histo){
878 char hname[100];
879 sprintf(hname,"Amp_%d_%d_%d",uid[0],uid[1],uid[2]);
880 TFile * backup = gFile;
881 fDebugStreamer->GetFile()->cd();
194b0609 882 histo = new TH1F(hname, hname, 100, 5,100);
65c045f0 883 //histo->SetDirectory(0); // histogram not connected to directory -(File)
884 sectorArray->AddAt(histo, position);
885 if (backup) backup->cd();
886 }
887 for (Int_t i=0; i<nchannels; i++){
888 if (signal[i]>0) histo->Fill(signal[i]);
889 }
890 }
891 //
892 TGraph * graph;
893 Bool_t random = (gRandom->Rndm()<0.0001);
894 if (max-median>kMin || rms06>2.*fParam->GetZeroSup() || random){
895 graph =new TGraph(nchannels, dtime, dsignal);
896 if (rms06>2.*fParam->GetZeroSup() || random)
897 (*fDebugStreamer)<<"SignalN"<< //noise pads - or random sample of pads
898 "Sector="<<uid[0]<<
899 "Row="<<uid[1]<<
900 "Pad="<<uid[2]<<
901 "Graph.="<<graph<<
902 "Max="<<max<<
903 "MaxPos="<<maxPos<<
904 //
905 "Median="<<median<<
906 "Mean="<<mean<<
907 "RMS="<<rms<<
908 "Mean06="<<mean06<<
909 "RMS06="<<rms06<<
65c045f0 910 "Mean09="<<mean09<<
911 "RMS09="<<rms09<<
912 "\n";
913 if (max-median>kMin)
914 (*fDebugStreamer)<<"SignalB"<< // pads with signal
915 "Sector="<<uid[0]<<
916 "Row="<<uid[1]<<
917 "Pad="<<uid[2]<<
918 "Graph.="<<graph<<
919 "Max="<<max<<
920 "MaxPos="<<maxPos<<
921 //
922 "Median="<<median<<
923 "Mean="<<mean<<
924 "RMS="<<rms<<
925 "Mean06="<<mean06<<
926 "RMS06="<<rms06<<
65c045f0 927 "Mean09="<<mean09<<
928 "RMS09="<<rms09<<
929 "\n";
930 delete graph;
931 }
932
933 (*fDebugStreamer)<<"Signal"<<
934 "Sector="<<uid[0]<<
935 "Row="<<uid[1]<<
936 "Pad="<<uid[2]<<
937 "Max="<<max<<
938 "MaxPos="<<maxPos<<
939 //
940 "Median="<<median<<
941 "Mean="<<mean<<
942 "RMS="<<rms<<
943 "Mean06="<<mean06<<
944 "RMS06="<<rms06<<
65c045f0 945 "Mean09="<<mean09<<
946 "RMS09="<<rms09<<
947 "\n";
948 delete [] dsignal;
949 delete [] dtime;
194b0609 950 if (rms06>fRecoParam->GetMaxNoise()) return 1024+median; // sign noisy channel in debug mode
65c045f0 951 return median;
952}
953
954
955
956void AliTPCclustererMI::DumpHistos(){
957 if (!fAmplitudeHisto) return;
958 for (UInt_t isector=0; isector<AliTPCROC::Instance()->GetNSectors(); isector++){
959 TObjArray * array = (TObjArray*)fAmplitudeHisto->UncheckedAt(isector);
960 if (!array) continue;
961 for (UInt_t ipad = 0; ipad <(UInt_t)array->GetEntriesFast(); ipad++){
962 TH1F * histo = (TH1F*) array->UncheckedAt(ipad);
963 if (!histo) continue;
964 if (histo->GetEntries()<100) continue;
965 histo->Fit("gaus","q");
966 Float_t mean = histo->GetMean();
967 Float_t rms = histo->GetRMS();
968 Float_t gmean = histo->GetFunction("gaus")->GetParameter(1);
969 Float_t gsigma = histo->GetFunction("gaus")->GetParameter(2);
970 Float_t max = histo->GetFunction("gaus")->GetParameter(0);
971
972 // get pad number
973 UInt_t row=0, pad =0;
974 const UInt_t *indexes = AliTPCROC::Instance()->GetRowIndexes(isector);
975 for (UInt_t irow=0; irow< AliTPCROC::Instance()->GetNRows(isector); irow++){
976 if (indexes[irow]<ipad){
977 row = irow;
978 pad = ipad-indexes[irow];
979 }
980 }
981 Int_t rpad = pad - (AliTPCROC::Instance()->GetNPads(isector,row))/2;
982 //
983 (*fDebugStreamer)<<"Fit"<<
984 "Sector="<<isector<<
985 "Row="<<row<<
986 "Pad="<<pad<<
987 "RPad="<<rpad<<
988 "Max="<<max<<
989 "Mean="<<mean<<
990 "RMS="<<rms<<
991 "GMean="<<gmean<<
992 "GSigma="<<gsigma<<
993 "\n";
994 if (array->UncheckedAt(ipad)) fDebugStreamer->StoreObject(array->UncheckedAt(ipad));
995 }
996 }
997}