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 **************************************************************************/
18 //-------------------------------------------------------
19 // Implementation of the TPC clusterer
21 // Origin: Marian Ivanov
22 //-------------------------------------------------------
24 #include "AliTPCReconstructor.h"
25 #include "AliTPCclustererMI.h"
26 #include "AliTPCclusterMI.h"
27 #include <TObjArray.h>
32 #include "AliMathBase.h"
34 #include "AliTPCClustersArray.h"
35 #include "AliTPCClustersRow.h"
36 #include "AliDigits.h"
37 #include "AliSimDigits.h"
38 #include "AliTPCParam.h"
39 #include "AliTPCRecoParam.h"
40 #include "AliRawReader.h"
41 #include "AliTPCRawStream.h"
42 #include "AliRunLoader.h"
43 #include "AliLoader.h"
44 #include "Riostream.h"
46 #include "AliTPCcalibDB.h"
47 #include "AliTPCCalPad.h"
48 #include "AliTPCCalROC.h"
49 #include "TTreeStream.h"
53 ClassImp(AliTPCclustererMI)
57 AliTPCclustererMI::AliTPCclustererMI(const AliTPCParam* par, const AliTPCRecoParam * recoParam):
71 fPedSubtraction(kFALSE),
72 fIsOldRCUFormat(kFALSE),
83 fIsOldRCUFormat = kFALSE;
88 fRecoParam = recoParam;
90 //set default parameters if not specified
91 fRecoParam = AliTPCReconstructor::GetRecoParam();
92 if (!fRecoParam) fRecoParam = AliTPCRecoParam::GetLowFluxParam();
94 fDebugStreamer = new TTreeSRedirector("TPCsignal.root");
98 AliTPCclustererMI::~AliTPCclustererMI(){
100 if (fAmplitudeHisto) delete fAmplitudeHisto;
101 if (fDebugStreamer) delete fDebugStreamer;
104 void AliTPCclustererMI::SetInput(TTree * tree)
107 // set input tree with digits
110 if (!fInput->GetBranch("Segment")){
111 cerr<<"AliTPC::Digits2Clusters(): no porper input tree !\n";
117 void AliTPCclustererMI::SetOutput(TTree * tree)
122 AliTPCClustersRow clrow;
123 AliTPCClustersRow *pclrow=&clrow;
124 clrow.SetClass("AliTPCclusterMI");
125 clrow.SetArray(1); // to make Clones array
126 fOutput->Branch("Segment","AliTPCClustersRow",&pclrow,32000,200);
130 Float_t AliTPCclustererMI::GetSigmaY2(Int_t iz){
131 // sigma y2 = in digits - we don't know the angle
132 Float_t z = iz*fParam->GetZWidth()+fParam->GetNTBinsL1()*fParam->GetZWidth();
133 Float_t sd2 = (z*fParam->GetDiffL()*fParam->GetDiffL())/
134 (fPadWidth*fPadWidth);
136 Float_t res = sd2+sres;
141 Float_t AliTPCclustererMI::GetSigmaZ2(Int_t iz){
142 //sigma z2 = in digits - angle estimated supposing vertex constraint
143 Float_t z = iz*fZWidth+fParam->GetNTBinsL1()*fParam->GetZWidth();
144 Float_t sd2 = (z*fParam->GetDiffL()*fParam->GetDiffL())/(fZWidth*fZWidth);
145 Float_t angular = fPadLength*(fParam->GetZLength()-z)/(fRx*fZWidth);
148 Float_t sres = fParam->GetZSigma()/fZWidth;
150 Float_t res = angular +sd2+sres;
154 void AliTPCclustererMI::MakeCluster(Int_t k,Int_t max,Float_t *bins, UInt_t /*m*/,
157 Int_t i0=k/max; //central pad
158 Int_t j0=k%max; //central time bin
160 // set pointers to data
161 //Int_t dummy[5] ={0,0,0,0,0};
162 Float_t * matrix[5]; //5x5 matrix with digits - indexing i = 0 ..4 j = -2..2
163 Float_t * resmatrix[5];
164 for (Int_t di=-2;di<=2;di++){
165 matrix[di+2] = &bins[k+di*max];
166 resmatrix[di+2] = &fResBins[k+di*max];
168 //build matrix with virtual charge
169 Float_t sigmay2= GetSigmaY2(j0);
170 Float_t sigmaz2= GetSigmaZ2(j0);
172 Float_t vmatrix[5][5];
173 vmatrix[2][2] = matrix[2][0];
175 c.SetMax((UShort_t)(vmatrix[2][2])); // write maximal amplitude
176 for (Int_t di =-1;di <=1;di++)
177 for (Int_t dj =-1;dj <=1;dj++){
178 Float_t amp = matrix[di+2][dj];
179 if ( (amp<2) && (fLoop<2)){
180 // if under threshold - calculate virtual charge
181 Float_t ratio = TMath::Exp(-1.2*TMath::Abs(di)/sigmay2)*TMath::Exp(-1.2*TMath::Abs(dj)/sigmaz2);
182 amp = ((matrix[2][0]-2)*(matrix[2][0]-2)/(matrix[-di+2][-dj]+2))*ratio;
184 vmatrix[2+di][2+dj]=amp;
185 vmatrix[2+2*di][2+2*dj]=0;
188 vmatrix[2+2*di][2+dj] =0;
189 vmatrix[2+di][2+2*dj] =0;
194 //if small amplitude - below 2 x threshold - don't consider other one
195 vmatrix[2+di][2+dj]=amp;
196 vmatrix[2+2*di][2+2*dj]=0; // don't take to the account next bin
199 vmatrix[2+2*di][2+dj] =0;
200 vmatrix[2+di][2+2*dj] =0;
204 //if bigger then take everything
205 vmatrix[2+di][2+dj]=amp;
206 vmatrix[2+2*di][2+2*dj]= matrix[2*di+2][2*dj] ;
209 vmatrix[2+2*di][2+dj] = matrix[2*di+2][dj];
210 vmatrix[2+di][2+2*dj] = matrix[2+di][dj*2];
222 for (Int_t i=-2;i<=2;i++)
223 for (Int_t j=-2;j<=2;j++){
224 Float_t amp = vmatrix[i+2][j+2];
233 Float_t meani = sumiw/sumw;
234 Float_t mi2 = sumi2w/sumw-meani*meani;
235 Float_t meanj = sumjw/sumw;
236 Float_t mj2 = sumj2w/sumw-meanj*meanj;
238 Float_t ry = mi2/sigmay2;
239 Float_t rz = mj2/sigmaz2;
242 if ( ( (ry<0.6) || (rz<0.6) ) && fLoop==2) return;
243 if ( (ry <1.2) && (rz<1.2) || (!fRecoParam->GetDoUnfold())) {
245 //if cluster looks like expected or Unfolding not switched on
246 //standard COG is used
247 //+1.2 deviation from expected sigma accepted
248 // c.fMax = FitMax(vmatrix,meani,meanj,TMath::Sqrt(sigmay2),TMath::Sqrt(sigmaz2));
252 //set cluster parameters
254 c.SetY(meani*fPadWidth);
255 c.SetZ(meanj*fZWidth);
259 //remove cluster data from data
260 for (Int_t di=-2;di<=2;di++)
261 for (Int_t dj=-2;dj<=2;dj++){
262 resmatrix[di+2][dj] -= vmatrix[di+2][dj+2];
263 if (resmatrix[di+2][dj]<0) resmatrix[di+2][dj]=0;
269 //unfolding when neccessary
272 Float_t * matrix2[7]; //7x7 matrix with digits - indexing i = 0 ..6 j = -3..3
273 Float_t dummy[7]={0,0,0,0,0,0};
274 for (Int_t di=-3;di<=3;di++){
275 matrix2[di+3] = &bins[k+di*max];
276 if ((k+di*max)<3) matrix2[di+3] = &dummy[3];
277 if ((k+di*max)>fMaxBin-3) matrix2[di+3] = &dummy[3];
279 Float_t vmatrix2[5][5];
282 UnfoldCluster(matrix2,vmatrix2,meani,meanj,sumu,overlap);
284 // c.fMax = FitMax(vmatrix2,meani,meanj,TMath::Sqrt(sigmay2),TMath::Sqrt(sigmaz2));
287 //set cluster parameters
289 c.SetY(meani*fPadWidth);
290 c.SetZ(meanj*fZWidth);
293 c.SetType(Char_t(overlap)+1);
300 printf("%f\t%f\n", vmatrix2[2][2], vmatrix[2][2]);
305 void AliTPCclustererMI::UnfoldCluster(Float_t * matrix2[7], Float_t recmatrix[5][5], Float_t & meani, Float_t & meanj,
306 Float_t & sumu, Float_t & overlap )
309 //unfold cluster from input matrix
310 //data corresponding to cluster writen in recmatrix
311 //output meani and meanj
313 //take separatelly y and z
315 Float_t sum3i[7] = {0,0,0,0,0,0,0};
316 Float_t sum3j[7] = {0,0,0,0,0,0,0};
318 for (Int_t k =0;k<7;k++)
319 for (Int_t l = -1; l<=1;l++){
320 sum3i[k]+=matrix2[k][l];
321 sum3j[k]+=matrix2[l+3][k-3];
323 Float_t mratio[3][3]={{1,1,1},{1,1,1},{1,1,1}};
326 Float_t sum3wi = 0; //charge minus overlap
327 Float_t sum3wio = 0; //full charge
328 Float_t sum3iw = 0; //sum for mean value
329 for (Int_t dk=-1;dk<=1;dk++){
330 sum3wio+=sum3i[dk+3];
336 if ( ( ((sum3i[dk+3]+3)/(sum3i[3]-3))+1 < (sum3i[2*dk+3]-3)/(sum3i[dk+3]+3))||
337 sum3i[dk+3]<=sum3i[2*dk+3] && sum3i[dk+3]>2 ){
338 Float_t xm2 = sum3i[-dk+3];
339 Float_t xm1 = sum3i[+3];
340 Float_t x1 = sum3i[2*dk+3];
341 Float_t x2 = sum3i[3*dk+3];
342 Float_t w11 = TMath::Max((Float_t)(4.*xm1-xm2),(Float_t)0.000001);
343 Float_t w12 = TMath::Max((Float_t)(4 *x1 -x2),(Float_t)0.);
344 ratio = w11/(w11+w12);
345 for (Int_t dl=-1;dl<=1;dl++)
346 mratio[dk+1][dl+1] *= ratio;
348 Float_t amp = sum3i[dk+3]*ratio;
353 meani = sum3iw/sum3wi;
354 Float_t overlapi = (sum3wio-sum3wi)/sum3wio;
359 Float_t sum3wj = 0; //charge minus overlap
360 Float_t sum3wjo = 0; //full charge
361 Float_t sum3jw = 0; //sum for mean value
362 for (Int_t dk=-1;dk<=1;dk++){
363 sum3wjo+=sum3j[dk+3];
369 if ( ( ((sum3j[dk+3]+3)/(sum3j[3]-3))+1 < (sum3j[2*dk+3]-3)/(sum3j[dk+3]+3)) ||
370 (sum3j[dk+3]<=sum3j[2*dk+3] && sum3j[dk+3]>2)){
371 Float_t xm2 = sum3j[-dk+3];
372 Float_t xm1 = sum3j[+3];
373 Float_t x1 = sum3j[2*dk+3];
374 Float_t x2 = sum3j[3*dk+3];
375 Float_t w11 = TMath::Max((Float_t)(4.*xm1-xm2),(Float_t)0.000001);
376 Float_t w12 = TMath::Max((Float_t)(4 *x1 -x2),(Float_t)0.);
377 ratio = w11/(w11+w12);
378 for (Int_t dl=-1;dl<=1;dl++)
379 mratio[dl+1][dk+1] *= ratio;
381 Float_t amp = sum3j[dk+3]*ratio;
386 meanj = sum3jw/sum3wj;
387 Float_t overlapj = (sum3wjo-sum3wj)/sum3wjo;
388 overlap = Int_t(100*TMath::Max(overlapi,overlapj)+3);
389 sumu = (sum3wj+sum3wi)/2.;
392 //if not overlap detected remove everything
393 for (Int_t di =-2; di<=2;di++)
394 for (Int_t dj =-2; dj<=2;dj++){
395 recmatrix[di+2][dj+2] = matrix2[3+di][dj];
399 for (Int_t di =-1; di<=1;di++)
400 for (Int_t dj =-1; dj<=1;dj++){
402 if (mratio[di+1][dj+1]==1){
403 recmatrix[di+2][dj+2] = matrix2[3+di][dj];
404 if (TMath::Abs(di)+TMath::Abs(dj)>1){
405 recmatrix[2*di+2][dj+2] = matrix2[3+2*di][dj];
406 recmatrix[di+2][2*dj+2] = matrix2[3+di][2*dj];
408 recmatrix[2*di+2][2*dj+2] = matrix2[3+2*di][2*dj];
412 //if we have overlap in direction
413 recmatrix[di+2][dj+2] = mratio[di+1][dj+1]* matrix2[3+di][dj];
414 if (TMath::Abs(di)+TMath::Abs(dj)>1){
415 ratio = TMath::Min((Float_t)(recmatrix[di+2][dj+2]/(matrix2[3+0*di][1*dj]+1)),(Float_t)1.);
416 recmatrix[2*di+2][dj+2] = ratio*recmatrix[di+2][dj+2];
418 ratio = TMath::Min((Float_t)(recmatrix[di+2][dj+2]/(matrix2[3+1*di][0*dj]+1)),(Float_t)1.);
419 recmatrix[di+2][2*dj+2] = ratio*recmatrix[di+2][dj+2];
422 ratio = recmatrix[di+2][dj+2]/matrix2[3][0];
423 recmatrix[2*di+2][2*dj+2] = ratio*recmatrix[di+2][dj+2];
429 printf("%f\n", recmatrix[2][2]);
433 Float_t AliTPCclustererMI::FitMax(Float_t vmatrix[5][5], Float_t y, Float_t z, Float_t sigmay, Float_t sigmaz)
440 for (Int_t di = -1;di<=1;di++)
441 for (Int_t dj = -1;dj<=1;dj++){
442 if (vmatrix[2+di][2+dj]>2){
443 Float_t teor = TMath::Gaus(di,y,sigmay*1.2)*TMath::Gaus(dj,z,sigmaz*1.2);
444 sumteor += teor*vmatrix[2+di][2+dj];
445 sumamp += vmatrix[2+di][2+dj]*vmatrix[2+di][2+dj];
448 Float_t max = sumamp/sumteor;
452 void AliTPCclustererMI::AddCluster(AliTPCclusterMI &c){
454 // transform cluster to the global coordinata
455 // add the cluster to the array
457 Float_t meani = c.GetY()/fPadWidth;
458 Float_t meanj = c.GetZ()/fZWidth;
460 Int_t ki = TMath::Nint(meani-3);
462 if (ki>=fMaxPad) ki = fMaxPad-1;
463 Int_t kj = TMath::Nint(meanj-3);
465 if (kj>=fMaxTime-3) kj=fMaxTime-4;
466 // ki and kj shifted to "real" coordinata
468 c.SetLabel(fRowDig->GetTrackIDFast(kj,ki,0)-2,0);
469 c.SetLabel(fRowDig->GetTrackIDFast(kj,ki,1)-2,1);
470 c.SetLabel(fRowDig->GetTrackIDFast(kj,ki,2)-2,2);
474 Float_t s2 = c.GetSigmaY2();
475 Float_t w=fParam->GetPadPitchWidth(fSector);
477 c.SetSigmaY2(s2*w*w);
480 c.SetSigmaZ2(s2*w*w);
481 c.SetY((meani - 2.5 - 0.5*fMaxPad)*fParam->GetPadPitchWidth(fSector));
482 c.SetZ(fZWidth*(meanj-3));
483 c.SetZ(c.GetZ() - 3.*fParam->GetZSigma() + fParam->GetNTBinsL1()*fParam->GetZWidth()); // PASA delay + L1 delay
484 c.SetZ(fSign*(fParam->GetZLength() - c.GetZ()));
486 c.SetDetector(fSector);
489 if (ki<=1 || ki>=fMaxPad-1 || kj==1 || kj==fMaxTime-2) {
490 //c.SetSigmaY2(c.GetSigmaY2()*25.);
491 //c.SetSigmaZ2(c.GetSigmaZ2()*4.);
492 c.SetType(-(c.GetType()+3)); //edge clusters
494 if (fLoop==2) c.SetType(100);
496 TClonesArray * arr = fRowCl->GetArray();
497 // AliTPCclusterMI * cl =
498 new ((*arr)[fNcluster]) AliTPCclusterMI(c);
504 //_____________________________________________________________________________
505 void AliTPCclustererMI::Digits2Clusters()
507 //-----------------------------------------------------------------
508 // This is a simple cluster finder.
509 //-----------------------------------------------------------------
512 Error("Digits2Clusters", "input tree not initialised");
517 Error("Digits2Clusters", "output tree not initialised");
521 AliTPCCalPad * gainTPC = AliTPCcalibDB::Instance()->GetPadGainFactor();
523 AliSimDigits digarr, *dummy=&digarr;
525 fInput->GetBranch("Segment")->SetAddress(&dummy);
526 Stat_t nentries = fInput->GetEntries();
528 fMaxTime=fParam->GetMaxTBin()+6; // add 3 virtual time bins before and 3 after
532 for (Int_t n=0; n<nentries; n++) {
534 if (!fParam->AdjustSectorRow(digarr.GetID(),fSector,fRow)) {
535 cerr<<"AliTPC warning: invalid segment ID ! "<<digarr.GetID()<<endl;
539 AliTPCCalROC * gainROC = gainTPC->GetCalROC(fSector); // pad gains per given sector
542 AliTPCClustersRow *clrow= new AliTPCClustersRow();
544 clrow->SetClass("AliTPCclusterMI");
547 clrow->SetID(digarr.GetID());
548 fOutput->GetBranch("Segment")->SetAddress(&clrow);
549 fRx=fParam->GetPadRowRadii(fSector,row);
552 const Int_t kNIS=fParam->GetNInnerSector(), kNOS=fParam->GetNOuterSector();
553 fZWidth = fParam->GetZWidth();
554 if (fSector < kNIS) {
555 fMaxPad = fParam->GetNPadsLow(row);
556 fSign = (fSector < kNIS/2) ? 1 : -1;
557 fPadLength = fParam->GetPadPitchLength(fSector,row);
558 fPadWidth = fParam->GetPadPitchWidth();
560 fMaxPad = fParam->GetNPadsUp(row);
561 fSign = ((fSector-kNIS) < kNOS/2) ? 1 : -1;
562 fPadLength = fParam->GetPadPitchLength(fSector,row);
563 fPadWidth = fParam->GetPadPitchWidth();
567 fMaxBin=fMaxTime*(fMaxPad+6); // add 3 virtual pads before and 3 after
568 fBins =new Float_t[fMaxBin];
569 fResBins =new Float_t[fMaxBin]; //fBins with residuals after 1 finder loop
570 memset(fBins,0,sizeof(Float_t)*fMaxBin);
571 memset(fResBins,0,sizeof(Float_t)*fMaxBin);
573 if (digarr.First()) //MI change
575 Float_t dig=digarr.CurrentDigit();
576 if (dig<=fParam->GetZeroSup()) continue;
577 Int_t j=digarr.CurrentRow()+3, i=digarr.CurrentColumn()+3;
578 Float_t gain = gainROC->GetValue(row,digarr.CurrentColumn());
579 fBins[i*fMaxTime+j]=dig/gain;
580 } while (digarr.Next());
581 digarr.ExpandTrackBuffer();
587 nclusters+=fNcluster;
592 Info("Digits2Clusters", "Number of found clusters : %d", nclusters);
595 void AliTPCclustererMI::Digits2Clusters(AliRawReader* rawReader)
597 //-----------------------------------------------------------------
598 // This is a cluster finder for the TPC raw data.
599 // The method assumes NO ordering of the altro channels.
600 // The pedestal subtraction can be switched on and off
601 // using an option of the TPC reconstructor
602 //-----------------------------------------------------------------
605 Error("Digits2Clusters", "output tree not initialised");
611 AliTPCCalPad * gainTPC = AliTPCcalibDB::Instance()->GetPadGainFactor();
615 fMaxTime = fParam->GetMaxTBin() + 6; // add 3 virtual time bins before and 3 after
616 const Int_t kNIS = fParam->GetNInnerSector();
617 const Int_t kNOS = fParam->GetNOuterSector();
618 const Int_t kNS = kNIS + kNOS;
619 fZWidth = fParam->GetZWidth();
620 Int_t zeroSup = fParam->GetZeroSup();
622 Float_t** allBins = NULL;
623 Float_t** allBinsRes = NULL;
626 for(fSector = 0; fSector < kNS; fSector++) {
628 AliTPCCalROC * gainROC = gainTPC->GetCalROC(fSector); // pad gains per given sector
631 Int_t nDDLs = 0, indexDDL = 0;
632 if (fSector < kNIS) {
633 nRows = fParam->GetNRowLow();
634 fSign = (fSector < kNIS/2) ? 1 : -1;
636 indexDDL = fSector * 2;
639 nRows = fParam->GetNRowUp();
640 fSign = ((fSector-kNIS) < kNOS/2) ? 1 : -1;
642 indexDDL = (fSector-kNIS) * 4 + kNIS * 2;
645 allBins = new Float_t*[nRows];
646 allBinsRes = new Float_t*[nRows];
648 for (Int_t iRow = 0; iRow < nRows; iRow++) {
651 maxPad = fParam->GetNPadsLow(iRow);
653 maxPad = fParam->GetNPadsUp(iRow);
655 Int_t maxBin = fMaxTime*(maxPad+6); // add 3 virtual pads before and 3 after
656 allBins[iRow] = new Float_t[maxBin];
657 allBinsRes[iRow] = new Float_t[maxBin];
658 memset(allBins[iRow],0,sizeof(Float_t)*maxBin);
659 memset(allBinsRes[iRow],0,sizeof(Float_t)*maxBin);
662 // Loas the raw data for corresponding DDLs
664 AliTPCRawStream input(rawReader);
665 input.SetOldRCUFormat(fIsOldRCUFormat);
666 rawReader->Select("TPC",indexDDL,indexDDL+nDDLs-1);
668 // Begin loop over altro data
669 while (input.Next()) {
671 if (input.GetSector() != fSector)
672 AliFatal(Form("Sector index mismatch ! Expected (%d), but got (%d) !",fSector,input.GetSector()));
675 Int_t iRow = input.GetRow();
676 if (iRow < 0 || iRow >= nRows)
677 AliFatal(Form("Pad-row index (%d) outside the range (%d -> %d) !",
680 Int_t iPad = input.GetPad() + 3;
684 maxPad = fParam->GetNPadsLow(iRow);
686 maxPad = fParam->GetNPadsUp(iRow);
688 if (input.GetPad() < 0 || input.GetPad() >= maxPad)
689 AliFatal(Form("Pad index (%d) outside the range (%d -> %d) !",
690 input.GetPad(), 0, maxPad -1));
692 Int_t iTimeBin = input.GetTime() + 3;
693 if ( input.GetTime() < 0 || input.GetTime() >= fParam->GetMaxTBin())
694 AliFatal(Form("Timebin index (%d) outside the range (%d -> %d) !",
695 input.GetTime(), 0, fParam->GetMaxTBin() -1));
697 Int_t maxBin = fMaxTime*(maxPad+6); // add 3 virtual pads before and 3 after
699 if (((iPad*fMaxTime+iTimeBin) >= maxBin) ||
700 ((iPad*fMaxTime+iTimeBin) < 0))
701 AliFatal(Form("Index outside the allowed range"
702 " Sector=%d Row=%d Pad=%d Timebin=%d"
703 " (Max.index=%d)",fSector,iRow,iPad,iTimeBin,maxBin));
705 Float_t signal = input.GetSignal();
706 // if (!fPedSubtraction && signal <= zeroSup) continue;
707 if (!fRecoParam->GetCalcPedestal() && signal <= zeroSup) continue;
709 Float_t gain = gainROC->GetValue(iRow,input.GetPad());
710 allBins[iRow][iPad*fMaxTime+iTimeBin] = signal/gain;
711 allBins[iRow][iPad*fMaxTime+0] = 1; // pad with signal
712 } // End of the loop over altro data
714 // Now loop over rows and perform pedestal subtraction
715 // if (fPedSubtraction) {
716 if (fRecoParam->GetCalcPedestal()) {
717 for (Int_t iRow = 0; iRow < nRows; iRow++) {
720 maxPad = fParam->GetNPadsLow(iRow);
722 maxPad = fParam->GetNPadsUp(iRow);
724 for (Int_t iPad = 0; iPad < maxPad + 6; iPad++) {
725 if (allBins[iRow][iPad*fMaxTime+0] !=1) continue; // no data
726 Float_t *p = &allBins[iRow][iPad*fMaxTime+3];
727 //Float_t pedestal = TMath::Median(fMaxTime, p);
728 Int_t id[3] = {fSector, iRow, iPad-3};
729 Float_t pedestal = ProcesSignal(p, fMaxTime, id);
730 for (Int_t iTimeBin = 0; iTimeBin < fMaxTime; iTimeBin++) {
731 allBins[iRow][iPad*fMaxTime+iTimeBin] -= pedestal;
732 if (iTimeBin < AliTPCReconstructor::GetRecoParam()->GetFirstBin())
733 allBins[iRow][iPad*fMaxTime+iTimeBin] = 0;
734 if (iTimeBin > AliTPCReconstructor::GetRecoParam()->GetLastBin())
735 allBins[iRow][iPad*fMaxTime+iTimeBin] = 0;
736 if (allBins[iRow][iPad*fMaxTime+iTimeBin] < zeroSup)
737 allBins[iRow][iPad*fMaxTime+iTimeBin] = 0;
743 // Now loop over rows and find clusters
744 for (fRow = 0; fRow < nRows; fRow++) {
745 fRowCl = new AliTPCClustersRow;
746 fRowCl->SetClass("AliTPCclusterMI");
748 fRowCl->SetID(fParam->GetIndex(fSector, fRow));
749 fOutput->GetBranch("Segment")->SetAddress(&fRowCl);
751 fRx = fParam->GetPadRowRadii(fSector, fRow);
752 fPadLength = fParam->GetPadPitchLength(fSector, fRow);
753 fPadWidth = fParam->GetPadPitchWidth();
755 fMaxPad = fParam->GetNPadsLow(fRow);
757 fMaxPad = fParam->GetNPadsUp(fRow);
758 fMaxBin = fMaxTime*(fMaxPad+6); // add 3 virtual pads before and 3 after
760 fBins = allBins[fRow];
761 fResBins = allBinsRes[fRow];
767 nclusters += fNcluster;
768 } // End of loop to find clusters
771 for (Int_t iRow = 0; iRow < nRows; iRow++) {
772 delete [] allBins[iRow];
773 delete [] allBinsRes[iRow];
777 delete [] allBinsRes;
779 } // End of loop over sectors
781 Info("Digits2Clusters", "Number of found clusters : %d\n", nclusters);
785 void AliTPCclustererMI::FindClusters()
787 //add virtual charge at the edge
788 for (Int_t i=0; i<fMaxTime; i++){
789 Float_t amp1 = fBins[i+3*fMaxTime];
792 Float_t amp2 = fBins[i+4*fMaxTime];
793 if (amp2==0) amp2=0.5;
794 Float_t sigma2 = GetSigmaY2(i);
795 amp0 = (amp1*amp1/amp2)*TMath::Exp(-1./sigma2);
796 if (gDebug>4) printf("\n%f\n",amp0);
798 fBins[i+2*fMaxTime] = amp0;
800 amp1 = fBins[(fMaxPad+2)*fMaxTime+i];
802 Float_t amp2 = fBins[i+(fMaxPad+1)*fMaxTime];
803 if (amp2==0) amp2=0.5;
804 Float_t sigma2 = GetSigmaY2(i);
805 amp0 = (amp1*amp1/amp2)*TMath::Exp(-1./sigma2);
806 if (gDebug>4) printf("\n%f\n",amp0);
808 fBins[(fMaxPad+3)*fMaxTime+i] = amp0;
811 // memcpy(fResBins,fBins, fMaxBin*2);
812 memcpy(fResBins,fBins, fMaxBin);
815 //first loop - for "gold cluster"
817 Float_t *b=&fBins[-1]+2*fMaxTime;
818 Int_t crtime = Int_t((fParam->GetZLength()-fRecoParam->GetCtgRange()*fRx)/fZWidth-fParam->GetNTBinsL1()-5);
820 for (Int_t i=2*fMaxTime; i<fMaxBin-2*fMaxTime; i++) {
822 if (*b<8) continue; //threshold form maxima
823 if (i%fMaxTime<crtime) {
824 Int_t delta = -(i%fMaxTime)+crtime;
830 if (!IsMaximum(*b,fMaxTime,b)) continue;
833 MakeCluster(i, fMaxTime, fBins, dummy,c);
836 //memcpy(fBins,fResBins, fMaxBin*2);
837 //second loop - for rest cluster
840 b=&fResBins[-1]+2*fMaxTime;
841 for (Int_t i=2*fMaxTime; i<fMaxBin-2*fMaxTime; i++) {
843 if (*b<25) continue; // bigger threshold for maxima
844 if (!IsMaximum(*b,fMaxTime,b)) continue;
847 MakeCluster(i, fMaxTime, fResBins, dummy,c);
854 Double_t AliTPCclustererMI::ProcesSignal(Float_t *signal, Int_t nchannels, Int_t id[3]){
856 // process signal on given pad - + streaming of additional information in special mode
862 Float_t kMin =fRecoParam->GetDumpAmplitudeMin(); // minimal signal to be dumped
863 Double_t median = TMath::Median(nchannels-offset, &(signal[offset]));
864 if (AliLog::GetDebugLevel("","AliTPCclustererMI")==0) return median;
867 Double_t mean = TMath::Mean(nchannels-offset, &(signal[offset]));
868 Double_t rms = TMath::RMS(nchannels-offset, &(signal[offset]));
869 Double_t *dsignal = new Double_t[nchannels];
870 Double_t *dtime = new Double_t[nchannels];
873 for (Int_t i=0; i<nchannels; i++){
875 dsignal[i] = signal[i];
876 if (i<offset) continue;
877 if (signal[i]>max && i <fMaxTime-100) { // temporary remove spike signals at the end
883 Double_t mean06=0, mean09=0;
884 Double_t rms06=0, rms09=0;
885 AliMathBase::EvaluateUni(nchannels-offset, &(dsignal[offset]), mean06, rms06, int(0.6*(nchannels-offset)));
886 AliMathBase::EvaluateUni(nchannels-offset, &(dsignal[offset]), mean09, rms09, int(0.9*(nchannels-offset)));
889 UInt_t uid[3] = {UInt_t(id[0]),UInt_t(id[1]),UInt_t(id[2])};
890 if (uid[0]< AliTPCROC::Instance()->GetNSectors()
891 && uid[1]< AliTPCROC::Instance()->GetNRows(uid[0]) &&
892 uid[2] < AliTPCROC::Instance()->GetNPads(uid[0], uid[1])){
893 if (!fAmplitudeHisto){
894 fAmplitudeHisto = new TObjArray(72);
896 TObjArray * sectorArray = (TObjArray*)fAmplitudeHisto->UncheckedAt(uid[0]);
898 Int_t npads = AliTPCROC::Instance()->GetNChannels(uid[0]);
899 sectorArray = new TObjArray(npads);
900 fAmplitudeHisto->AddAt(sectorArray, uid[0]);
902 Int_t position = uid[2]+ AliTPCROC::Instance()->GetRowIndexes(uid[0])[uid[1]];
903 TH1F * histo = (TH1F*)sectorArray->UncheckedAt(position);
906 sprintf(hname,"Amp_%d_%d_%d",uid[0],uid[1],uid[2]);
907 TFile * backup = gFile;
908 fDebugStreamer->GetFile()->cd();
909 histo = new TH1F(hname, hname, 100, 5,100);
910 //histo->SetDirectory(0); // histogram not connected to directory -(File)
911 sectorArray->AddAt(histo, position);
912 if (backup) backup->cd();
914 for (Int_t i=0; i<nchannels; i++){
915 if (signal[i]>0) histo->Fill(signal[i]);
920 Bool_t random = (gRandom->Rndm()<0.0001);
921 if (max-median>kMin || rms06>2.*fParam->GetZeroSup() || random){
922 graph =new TGraph(nchannels, dtime, dsignal);
923 if (rms06>2.*fParam->GetZeroSup() || random)
924 (*fDebugStreamer)<<"SignalN"<< //noise pads - or random sample of pads
941 (*fDebugStreamer)<<"SignalB"<< // pads with signal
960 (*fDebugStreamer)<<"Signal"<<
977 // Central Electrode signal analysis
979 Double_t ceQmax =0, ceQsum=0, ceTime=0;
980 Double_t cemean = mean06, cerms=rms06 ;
982 Double_t ceThreshold=5.*cerms;
983 Double_t ceSumThreshold=8.*cerms;
984 const Int_t cemin=5; // range for the analysis of the ce signal +- channels from the peak
986 for (Int_t i=nchannels-2; i>1; i--){
987 if ( (dsignal[i]-mean06)>ceThreshold && dsignal[i]>=dsignal[i+1] && dsignal[i]>=dsignal[i-1] ){
993 for (Int_t i=cemaxpos-cemin; i<cemaxpos+cemax; i++){
994 if (i>0 && i<nchannels&&dsignal[i]- cemean>0){
995 Double_t val=dsignal[i]- cemean;
996 ceTime+=val*dtime[i];
998 if (val>ceQmax) ceQmax=val;
1001 if (ceQmax&&ceQsum>ceSumThreshold) {
1003 (*fDebugStreamer)<<"Signalce"<<
1015 // end of ce signal analysis
1019 // Gating grid signal analysis
1021 Double_t ggQmax =0, ggQsum=0, ggTime=0;
1022 Double_t ggmean = mean06, ggrms=rms06 ;
1024 Double_t ggThreshold=5.*ggrms;
1025 Double_t ggSumThreshold=8.*ggrms;
1027 for (Int_t i=1; i<nchannels-1; i++){
1028 if ( (dsignal[i]-mean06)>ggThreshold && dsignal[i]>=dsignal[i+1] && dsignal[i]>=dsignal[i-1] &&
1029 (dsignal[i]+dsignal[i+1]+dsignal[i-1]-3*mean06)>ggSumThreshold){
1031 if (dsignal[i-1]>dsignal[i+1]) ggmaxpos=i-1;
1036 for (Int_t i=ggmaxpos-1; i<ggmaxpos+3; i++){
1037 if (i>0 && i<nchannels && dsignal[i]-ggmean>0){
1038 Double_t val=dsignal[i]- ggmean;
1039 ggTime+=val*dtime[i];
1041 if (val>ggQmax) ggQmax=val;
1044 if (ggQmax&&ggQsum>ggSumThreshold) {
1046 (*fDebugStreamer)<<"Signalgg"<<
1058 // end of gg signal analysis
1063 if (rms06>fRecoParam->GetMaxNoise()) return 1024+median; // sign noisy channel in debug mode
1069 void AliTPCclustererMI::DumpHistos(){
1070 if (!fAmplitudeHisto) return;
1071 for (UInt_t isector=0; isector<AliTPCROC::Instance()->GetNSectors(); isector++){
1072 TObjArray * array = (TObjArray*)fAmplitudeHisto->UncheckedAt(isector);
1073 if (!array) continue;
1074 for (UInt_t ipad = 0; ipad <(UInt_t)array->GetEntriesFast(); ipad++){
1075 TH1F * histo = (TH1F*) array->UncheckedAt(ipad);
1076 if (!histo) continue;
1077 if (histo->GetEntries()<100) continue;
1078 histo->Fit("gaus","q");
1079 Float_t mean = histo->GetMean();
1080 Float_t rms = histo->GetRMS();
1081 Float_t gmean = histo->GetFunction("gaus")->GetParameter(1);
1082 Float_t gsigma = histo->GetFunction("gaus")->GetParameter(2);
1083 Float_t max = histo->GetFunction("gaus")->GetParameter(0);
1086 UInt_t row=0, pad =0;
1087 const UInt_t *indexes = AliTPCROC::Instance()->GetRowIndexes(isector);
1088 for (UInt_t irow=0; irow< AliTPCROC::Instance()->GetNRows(isector); irow++){
1089 if (indexes[irow]<ipad){
1091 pad = ipad-indexes[irow];
1094 Int_t rpad = pad - (AliTPCROC::Instance()->GetNPads(isector,row))/2;
1096 (*fDebugStreamer)<<"Fit"<<
1097 "Sector="<<isector<<
1107 if (array->UncheckedAt(ipad)) fDebugStreamer->StoreObject(array->UncheckedAt(ipad));