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 "AliRawEventHeaderBase.h"
43 #include "AliRunLoader.h"
44 #include "AliLoader.h"
45 #include "Riostream.h"
47 #include "AliTPCcalibDB.h"
48 #include "AliTPCCalPad.h"
49 #include "AliTPCCalROC.h"
50 #include "TTreeStream.h"
54 ClassImp(AliTPCclustererMI)
58 AliTPCclustererMI::AliTPCclustererMI(const AliTPCParam* par, const AliTPCRecoParam * recoParam):
72 fPedSubtraction(kFALSE),
73 fIsOldRCUFormat(kFALSE),
89 // param - tpc parameters for given file
90 // recoparam - reconstruction parameters
92 fIsOldRCUFormat = kFALSE;
97 fRecoParam = recoParam;
99 //set default parameters if not specified
100 fRecoParam = AliTPCReconstructor::GetRecoParam();
101 if (!fRecoParam) fRecoParam = AliTPCRecoParam::GetLowFluxParam();
103 fDebugStreamer = new TTreeSRedirector("TPCsignal.root");
107 AliTPCclustererMI::~AliTPCclustererMI(){
109 if (fAmplitudeHisto) delete fAmplitudeHisto;
110 if (fDebugStreamer) delete fDebugStreamer;
113 void AliTPCclustererMI::SetInput(TTree * tree)
116 // set input tree with digits
119 if (!fInput->GetBranch("Segment")){
120 cerr<<"AliTPC::Digits2Clusters(): no porper input tree !\n";
126 void AliTPCclustererMI::SetOutput(TTree * tree)
131 AliTPCClustersRow clrow;
132 AliTPCClustersRow *pclrow=&clrow;
133 clrow.SetClass("AliTPCclusterMI");
134 clrow.SetArray(1); // to make Clones array
135 fOutput->Branch("Segment","AliTPCClustersRow",&pclrow,32000,200);
139 Float_t AliTPCclustererMI::GetSigmaY2(Int_t iz){
140 // sigma y2 = in digits - we don't know the angle
141 Float_t z = iz*fParam->GetZWidth()+fParam->GetNTBinsL1()*fParam->GetZWidth();
142 Float_t sd2 = (z*fParam->GetDiffL()*fParam->GetDiffL())/
143 (fPadWidth*fPadWidth);
145 Float_t res = sd2+sres;
150 Float_t AliTPCclustererMI::GetSigmaZ2(Int_t iz){
151 //sigma z2 = in digits - angle estimated supposing vertex constraint
152 Float_t z = iz*fZWidth+fParam->GetNTBinsL1()*fParam->GetZWidth();
153 Float_t sd2 = (z*fParam->GetDiffL()*fParam->GetDiffL())/(fZWidth*fZWidth);
154 Float_t angular = fPadLength*(fParam->GetZLength()-z)/(fRx*fZWidth);
157 Float_t sres = fParam->GetZSigma()/fZWidth;
159 Float_t res = angular +sd2+sres;
163 void AliTPCclustererMI::MakeCluster(Int_t k,Int_t max,Float_t *bins, UInt_t /*m*/,
167 // k - Make cluster at position k
168 // bins - 2 D array of signals mapped to 1 dimensional array -
169 // max - the number of time bins er one dimension
170 // c - refernce to cluster to be filled
172 Int_t i0=k/max; //central pad
173 Int_t j0=k%max; //central time bin
175 // set pointers to data
176 //Int_t dummy[5] ={0,0,0,0,0};
177 Float_t * matrix[5]; //5x5 matrix with digits - indexing i = 0 ..4 j = -2..2
178 Float_t * resmatrix[5];
179 for (Int_t di=-2;di<=2;di++){
180 matrix[di+2] = &bins[k+di*max];
181 resmatrix[di+2] = &fResBins[k+di*max];
183 //build matrix with virtual charge
184 Float_t sigmay2= GetSigmaY2(j0);
185 Float_t sigmaz2= GetSigmaZ2(j0);
187 Float_t vmatrix[5][5];
188 vmatrix[2][2] = matrix[2][0];
190 c.SetMax((UShort_t)(vmatrix[2][2])); // write maximal amplitude
191 for (Int_t di =-1;di <=1;di++)
192 for (Int_t dj =-1;dj <=1;dj++){
193 Float_t amp = matrix[di+2][dj];
194 if ( (amp<2) && (fLoop<2)){
195 // if under threshold - calculate virtual charge
196 Float_t ratio = TMath::Exp(-1.2*TMath::Abs(di)/sigmay2)*TMath::Exp(-1.2*TMath::Abs(dj)/sigmaz2);
197 amp = ((matrix[2][0]-2)*(matrix[2][0]-2)/(matrix[-di+2][-dj]+2))*ratio;
199 vmatrix[2+di][2+dj]=amp;
200 vmatrix[2+2*di][2+2*dj]=0;
203 vmatrix[2+2*di][2+dj] =0;
204 vmatrix[2+di][2+2*dj] =0;
209 //if small amplitude - below 2 x threshold - don't consider other one
210 vmatrix[2+di][2+dj]=amp;
211 vmatrix[2+2*di][2+2*dj]=0; // don't take to the account next bin
214 vmatrix[2+2*di][2+dj] =0;
215 vmatrix[2+di][2+2*dj] =0;
219 //if bigger then take everything
220 vmatrix[2+di][2+dj]=amp;
221 vmatrix[2+2*di][2+2*dj]= matrix[2*di+2][2*dj] ;
224 vmatrix[2+2*di][2+dj] = matrix[2*di+2][dj];
225 vmatrix[2+di][2+2*dj] = matrix[2+di][dj*2];
237 for (Int_t i=-2;i<=2;i++)
238 for (Int_t j=-2;j<=2;j++){
239 Float_t amp = vmatrix[i+2][j+2];
248 Float_t meani = sumiw/sumw;
249 Float_t mi2 = sumi2w/sumw-meani*meani;
250 Float_t meanj = sumjw/sumw;
251 Float_t mj2 = sumj2w/sumw-meanj*meanj;
253 Float_t ry = mi2/sigmay2;
254 Float_t rz = mj2/sigmaz2;
257 if ( ( (ry<0.6) || (rz<0.6) ) && fLoop==2) return;
258 if ( (ry <1.2) && (rz<1.2) || (!fRecoParam->GetDoUnfold())) {
260 //if cluster looks like expected or Unfolding not switched on
261 //standard COG is used
262 //+1.2 deviation from expected sigma accepted
263 // c.fMax = FitMax(vmatrix,meani,meanj,TMath::Sqrt(sigmay2),TMath::Sqrt(sigmaz2));
267 //set cluster parameters
269 c.SetY(meani*fPadWidth);
270 c.SetZ(meanj*fZWidth);
274 //remove cluster data from data
275 for (Int_t di=-2;di<=2;di++)
276 for (Int_t dj=-2;dj<=2;dj++){
277 resmatrix[di+2][dj] -= vmatrix[di+2][dj+2];
278 if (resmatrix[di+2][dj]<0) resmatrix[di+2][dj]=0;
284 //unfolding when neccessary
287 Float_t * matrix2[7]; //7x7 matrix with digits - indexing i = 0 ..6 j = -3..3
288 Float_t dummy[7]={0,0,0,0,0,0};
289 for (Int_t di=-3;di<=3;di++){
290 matrix2[di+3] = &bins[k+di*max];
291 if ((k+di*max)<3) matrix2[di+3] = &dummy[3];
292 if ((k+di*max)>fMaxBin-3) matrix2[di+3] = &dummy[3];
294 Float_t vmatrix2[5][5];
297 UnfoldCluster(matrix2,vmatrix2,meani,meanj,sumu,overlap);
299 // c.fMax = FitMax(vmatrix2,meani,meanj,TMath::Sqrt(sigmay2),TMath::Sqrt(sigmaz2));
302 //set cluster parameters
304 c.SetY(meani*fPadWidth);
305 c.SetZ(meanj*fZWidth);
308 c.SetType(Char_t(overlap)+1);
315 printf("%f\t%f\n", vmatrix2[2][2], vmatrix[2][2]);
320 void AliTPCclustererMI::UnfoldCluster(Float_t * matrix2[7], Float_t recmatrix[5][5], Float_t & meani, Float_t & meanj,
321 Float_t & sumu, Float_t & overlap )
324 //unfold cluster from input matrix
325 //data corresponding to cluster writen in recmatrix
326 //output meani and meanj
328 //take separatelly y and z
330 Float_t sum3i[7] = {0,0,0,0,0,0,0};
331 Float_t sum3j[7] = {0,0,0,0,0,0,0};
333 for (Int_t k =0;k<7;k++)
334 for (Int_t l = -1; l<=1;l++){
335 sum3i[k]+=matrix2[k][l];
336 sum3j[k]+=matrix2[l+3][k-3];
338 Float_t mratio[3][3]={{1,1,1},{1,1,1},{1,1,1}};
341 Float_t sum3wi = 0; //charge minus overlap
342 Float_t sum3wio = 0; //full charge
343 Float_t sum3iw = 0; //sum for mean value
344 for (Int_t dk=-1;dk<=1;dk++){
345 sum3wio+=sum3i[dk+3];
351 if ( ( ((sum3i[dk+3]+3)/(sum3i[3]-3))+1 < (sum3i[2*dk+3]-3)/(sum3i[dk+3]+3))||
352 sum3i[dk+3]<=sum3i[2*dk+3] && sum3i[dk+3]>2 ){
353 Float_t xm2 = sum3i[-dk+3];
354 Float_t xm1 = sum3i[+3];
355 Float_t x1 = sum3i[2*dk+3];
356 Float_t x2 = sum3i[3*dk+3];
357 Float_t w11 = TMath::Max((Float_t)(4.*xm1-xm2),(Float_t)0.000001);
358 Float_t w12 = TMath::Max((Float_t)(4 *x1 -x2),(Float_t)0.);
359 ratio = w11/(w11+w12);
360 for (Int_t dl=-1;dl<=1;dl++)
361 mratio[dk+1][dl+1] *= ratio;
363 Float_t amp = sum3i[dk+3]*ratio;
368 meani = sum3iw/sum3wi;
369 Float_t overlapi = (sum3wio-sum3wi)/sum3wio;
374 Float_t sum3wj = 0; //charge minus overlap
375 Float_t sum3wjo = 0; //full charge
376 Float_t sum3jw = 0; //sum for mean value
377 for (Int_t dk=-1;dk<=1;dk++){
378 sum3wjo+=sum3j[dk+3];
384 if ( ( ((sum3j[dk+3]+3)/(sum3j[3]-3))+1 < (sum3j[2*dk+3]-3)/(sum3j[dk+3]+3)) ||
385 (sum3j[dk+3]<=sum3j[2*dk+3] && sum3j[dk+3]>2)){
386 Float_t xm2 = sum3j[-dk+3];
387 Float_t xm1 = sum3j[+3];
388 Float_t x1 = sum3j[2*dk+3];
389 Float_t x2 = sum3j[3*dk+3];
390 Float_t w11 = TMath::Max((Float_t)(4.*xm1-xm2),(Float_t)0.000001);
391 Float_t w12 = TMath::Max((Float_t)(4 *x1 -x2),(Float_t)0.);
392 ratio = w11/(w11+w12);
393 for (Int_t dl=-1;dl<=1;dl++)
394 mratio[dl+1][dk+1] *= ratio;
396 Float_t amp = sum3j[dk+3]*ratio;
401 meanj = sum3jw/sum3wj;
402 Float_t overlapj = (sum3wjo-sum3wj)/sum3wjo;
403 overlap = Int_t(100*TMath::Max(overlapi,overlapj)+3);
404 sumu = (sum3wj+sum3wi)/2.;
407 //if not overlap detected remove everything
408 for (Int_t di =-2; di<=2;di++)
409 for (Int_t dj =-2; dj<=2;dj++){
410 recmatrix[di+2][dj+2] = matrix2[3+di][dj];
414 for (Int_t di =-1; di<=1;di++)
415 for (Int_t dj =-1; dj<=1;dj++){
417 if (mratio[di+1][dj+1]==1){
418 recmatrix[di+2][dj+2] = matrix2[3+di][dj];
419 if (TMath::Abs(di)+TMath::Abs(dj)>1){
420 recmatrix[2*di+2][dj+2] = matrix2[3+2*di][dj];
421 recmatrix[di+2][2*dj+2] = matrix2[3+di][2*dj];
423 recmatrix[2*di+2][2*dj+2] = matrix2[3+2*di][2*dj];
427 //if we have overlap in direction
428 recmatrix[di+2][dj+2] = mratio[di+1][dj+1]* matrix2[3+di][dj];
429 if (TMath::Abs(di)+TMath::Abs(dj)>1){
430 ratio = TMath::Min((Float_t)(recmatrix[di+2][dj+2]/(matrix2[3+0*di][1*dj]+1)),(Float_t)1.);
431 recmatrix[2*di+2][dj+2] = ratio*recmatrix[di+2][dj+2];
433 ratio = TMath::Min((Float_t)(recmatrix[di+2][dj+2]/(matrix2[3+1*di][0*dj]+1)),(Float_t)1.);
434 recmatrix[di+2][2*dj+2] = ratio*recmatrix[di+2][dj+2];
437 ratio = recmatrix[di+2][dj+2]/matrix2[3][0];
438 recmatrix[2*di+2][2*dj+2] = ratio*recmatrix[di+2][dj+2];
444 printf("%f\n", recmatrix[2][2]);
448 Float_t AliTPCclustererMI::FitMax(Float_t vmatrix[5][5], Float_t y, Float_t z, Float_t sigmay, Float_t sigmaz)
455 for (Int_t di = -1;di<=1;di++)
456 for (Int_t dj = -1;dj<=1;dj++){
457 if (vmatrix[2+di][2+dj]>2){
458 Float_t teor = TMath::Gaus(di,y,sigmay*1.2)*TMath::Gaus(dj,z,sigmaz*1.2);
459 sumteor += teor*vmatrix[2+di][2+dj];
460 sumamp += vmatrix[2+di][2+dj]*vmatrix[2+di][2+dj];
463 Float_t max = sumamp/sumteor;
467 void AliTPCclustererMI::AddCluster(AliTPCclusterMI &c){
469 // transform cluster to the global coordinata
470 // add the cluster to the array
472 Float_t meani = c.GetY()/fPadWidth;
473 Float_t meanj = c.GetZ()/fZWidth;
475 Int_t ki = TMath::Nint(meani-3);
477 if (ki>=fMaxPad) ki = fMaxPad-1;
478 Int_t kj = TMath::Nint(meanj-3);
480 if (kj>=fMaxTime-3) kj=fMaxTime-4;
481 // ki and kj shifted to "real" coordinata
483 c.SetLabel(fRowDig->GetTrackIDFast(kj,ki,0)-2,0);
484 c.SetLabel(fRowDig->GetTrackIDFast(kj,ki,1)-2,1);
485 c.SetLabel(fRowDig->GetTrackIDFast(kj,ki,2)-2,2);
489 Float_t s2 = c.GetSigmaY2();
490 Float_t w=fParam->GetPadPitchWidth(fSector);
492 c.SetSigmaY2(s2*w*w);
495 c.SetSigmaZ2(s2*w*w);
496 c.SetY((meani - 2.5 - 0.5*fMaxPad)*fParam->GetPadPitchWidth(fSector));
497 if (!fRecoParam->GetBYMirror()){
499 c.SetY(-(meani - 2.5 - 0.5*fMaxPad)*fParam->GetPadPitchWidth(fSector));
502 c.SetZ(fZWidth*(meanj-3));
503 c.SetZ(c.GetZ() - 3.*fParam->GetZSigma() + fParam->GetNTBinsL1()*fParam->GetZWidth()); // PASA delay + L1 delay
504 c.SetZ(fSign*(fParam->GetZLength() - c.GetZ()));
506 c.SetDetector(fSector);
509 if (ki<=1 || ki>=fMaxPad-1 || kj==1 || kj==fMaxTime-2) {
510 //c.SetSigmaY2(c.GetSigmaY2()*25.);
511 //c.SetSigmaZ2(c.GetSigmaZ2()*4.);
512 c.SetType(-(c.GetType()+3)); //edge clusters
514 if (fLoop==2) c.SetType(100);
516 TClonesArray * arr = fRowCl->GetArray();
517 // AliTPCclusterMI * cl =
518 new ((*arr)[fNcluster]) AliTPCclusterMI(c);
524 //_____________________________________________________________________________
525 void AliTPCclustererMI::Digits2Clusters()
527 //-----------------------------------------------------------------
528 // This is a simple cluster finder.
529 //-----------------------------------------------------------------
532 Error("Digits2Clusters", "input tree not initialised");
537 Error("Digits2Clusters", "output tree not initialised");
541 AliTPCCalPad * gainTPC = AliTPCcalibDB::Instance()->GetPadGainFactor();
543 AliSimDigits digarr, *dummy=&digarr;
545 fInput->GetBranch("Segment")->SetAddress(&dummy);
546 Stat_t nentries = fInput->GetEntries();
548 fMaxTime=fParam->GetMaxTBin()+6; // add 3 virtual time bins before and 3 after
552 for (Int_t n=0; n<nentries; n++) {
554 if (!fParam->AdjustSectorRow(digarr.GetID(),fSector,fRow)) {
555 cerr<<"AliTPC warning: invalid segment ID ! "<<digarr.GetID()<<endl;
559 AliTPCCalROC * gainROC = gainTPC->GetCalROC(fSector); // pad gains per given sector
562 AliTPCClustersRow *clrow= new AliTPCClustersRow();
564 clrow->SetClass("AliTPCclusterMI");
567 clrow->SetID(digarr.GetID());
568 fOutput->GetBranch("Segment")->SetAddress(&clrow);
569 fRx=fParam->GetPadRowRadii(fSector,row);
572 const Int_t kNIS=fParam->GetNInnerSector(), kNOS=fParam->GetNOuterSector();
573 fZWidth = fParam->GetZWidth();
574 if (fSector < kNIS) {
575 fMaxPad = fParam->GetNPadsLow(row);
576 fSign = (fSector < kNIS/2) ? 1 : -1;
577 fPadLength = fParam->GetPadPitchLength(fSector,row);
578 fPadWidth = fParam->GetPadPitchWidth();
580 fMaxPad = fParam->GetNPadsUp(row);
581 fSign = ((fSector-kNIS) < kNOS/2) ? 1 : -1;
582 fPadLength = fParam->GetPadPitchLength(fSector,row);
583 fPadWidth = fParam->GetPadPitchWidth();
587 fMaxBin=fMaxTime*(fMaxPad+6); // add 3 virtual pads before and 3 after
588 fBins =new Float_t[fMaxBin];
589 fResBins =new Float_t[fMaxBin]; //fBins with residuals after 1 finder loop
590 memset(fBins,0,sizeof(Float_t)*fMaxBin);
591 memset(fResBins,0,sizeof(Float_t)*fMaxBin);
593 if (digarr.First()) //MI change
595 Float_t dig=digarr.CurrentDigit();
596 if (dig<=fParam->GetZeroSup()) continue;
597 Int_t j=digarr.CurrentRow()+3, i=digarr.CurrentColumn()+3;
598 Float_t gain = gainROC->GetValue(row,digarr.CurrentColumn());
599 fBins[i*fMaxTime+j]=dig/gain;
600 } while (digarr.Next());
601 digarr.ExpandTrackBuffer();
607 nclusters+=fNcluster;
612 Info("Digits2Clusters", "Number of found clusters : %d", nclusters);
615 void AliTPCclustererMI::Digits2Clusters(AliRawReader* rawReader)
617 //-----------------------------------------------------------------
618 // This is a cluster finder for the TPC raw data.
619 // The method assumes NO ordering of the altro channels.
620 // The pedestal subtraction can be switched on and off
621 // using an option of the TPC reconstructor
622 //-----------------------------------------------------------------
625 Error("Digits2Clusters", "output tree not initialised");
630 AliTPCROC * roc = AliTPCROC::Instance();
631 AliTPCCalPad * gainTPC = AliTPCcalibDB::Instance()->GetPadGainFactor();
632 AliTPCRawStream input(rawReader);
633 fEventHeader = (AliRawEventHeaderBase*)rawReader->GetEventHeader();
635 fTimeStamp = fEventHeader->Get("Timestamp");
636 fEventType = fEventHeader->Get("Type");
642 fMaxTime = fParam->GetMaxTBin() + 6; // add 3 virtual time bins before and 3 after
643 const Int_t kNIS = fParam->GetNInnerSector();
644 const Int_t kNOS = fParam->GetNOuterSector();
645 const Int_t kNS = kNIS + kNOS;
646 fZWidth = fParam->GetZWidth();
647 Int_t zeroSup = fParam->GetZeroSup();
649 //alocate memory for sector - maximal case
651 Float_t** allBins = NULL;
652 Float_t** allBinsRes = NULL;
653 Int_t nRowsMax = roc->GetNRows(roc->GetNSector()-1);
654 Int_t nPadsMax = roc->GetNPads(roc->GetNSector()-1,nRowsMax-1);
655 allBins = new Float_t*[nRowsMax];
656 allBinsRes = new Float_t*[nRowsMax];
657 for (Int_t iRow = 0; iRow < nRowsMax; iRow++) {
659 Int_t maxBin = fMaxTime*(nPadsMax+6); // add 3 virtual pads before and 3 after
660 allBins[iRow] = new Float_t[maxBin];
661 allBinsRes[iRow] = new Float_t[maxBin];
662 memset(allBins[iRow],0,sizeof(Float_t)*maxBin);
663 memset(allBinsRes[iRow],0,sizeof(Float_t)*maxBin);
668 for(fSector = 0; fSector < kNS; fSector++) {
670 AliTPCCalROC * gainROC = gainTPC->GetCalROC(fSector); // pad gains per given sector
673 Int_t nDDLs = 0, indexDDL = 0;
674 if (fSector < kNIS) {
675 nRows = fParam->GetNRowLow();
676 fSign = (fSector < kNIS/2) ? 1 : -1;
678 indexDDL = fSector * 2;
681 nRows = fParam->GetNRowUp();
682 fSign = ((fSector-kNIS) < kNOS/2) ? 1 : -1;
684 indexDDL = (fSector-kNIS) * 4 + kNIS * 2;
687 for (Int_t iRow = 0; iRow < nRows; iRow++) {
690 maxPad = fParam->GetNPadsLow(iRow);
692 maxPad = fParam->GetNPadsUp(iRow);
694 Int_t maxBin = fMaxTime*(maxPad+6); // add 3 virtual pads before and 3 after
695 memset(allBins[iRow],0,sizeof(Float_t)*maxBin);
696 memset(allBinsRes[iRow],0,sizeof(Float_t)*maxBin);
699 // Loas the raw data for corresponding DDLs
701 input.SetOldRCUFormat(fIsOldRCUFormat);
702 rawReader->Select("TPC",indexDDL,indexDDL+nDDLs-1);
704 // Begin loop over altro data
705 Bool_t calcPedestal = fRecoParam->GetCalcPedestal();
708 while (input.Next()) {
710 if (input.GetSector() != fSector)
711 AliFatal(Form("Sector index mismatch ! Expected (%d), but got (%d) !",fSector,input.GetSector()));
714 Int_t iRow = input.GetRow();
715 if (iRow < 0 || iRow >= nRows)
716 AliFatal(Form("Pad-row index (%d) outside the range (%d -> %d) !",
719 Int_t iPad = input.GetPad();
720 if (iPad < 0 || iPad >= nPadsMax)
721 AliFatal(Form("Pad index (%d) outside the range (%d -> %d) !",
722 iPad, 0, nPadsMax-1));
724 gain = gainROC->GetValue(iRow,iPad);
729 Int_t iTimeBin = input.GetTime();
730 if ( iTimeBin < 0 || iTimeBin >= fParam->GetMaxTBin())
731 AliFatal(Form("Timebin index (%d) outside the range (%d -> %d) !",
732 iTimeBin, 0, iTimeBin -1));
735 Float_t signal = input.GetSignal();
736 if (!calcPedestal && signal <= zeroSup) continue;
737 allBins[iRow][iPad*fMaxTime+iTimeBin] = signal/gain;
738 allBins[iRow][iPad*fMaxTime+0] = 1; // pad with signal
739 } // End of the loop over altro data
742 // Now loop over rows and perform pedestal subtraction
743 if (digCounter==0) continue;
744 // if (fPedSubtraction) {
746 for (Int_t iRow = 0; iRow < nRows; iRow++) {
749 maxPad = fParam->GetNPadsLow(iRow);
751 maxPad = fParam->GetNPadsUp(iRow);
753 for (Int_t iPad = 0; iPad < maxPad + 6; iPad++) {
754 if (allBins[iRow][iPad*fMaxTime+0] !=1) continue; // no data
755 Float_t *p = &allBins[iRow][iPad*fMaxTime+3];
756 //Float_t pedestal = TMath::Median(fMaxTime, p);
757 Int_t id[3] = {fSector, iRow, iPad-3};
759 Float_t pedestal = ProcesSignal(p, fMaxTime, id, rms);
760 for (Int_t iTimeBin = 0; iTimeBin < fMaxTime; iTimeBin++) {
761 allBins[iRow][iPad*fMaxTime+iTimeBin] -= pedestal;
762 if (iTimeBin < AliTPCReconstructor::GetRecoParam()->GetFirstBin())
763 allBins[iRow][iPad*fMaxTime+iTimeBin] = 0;
764 if (iTimeBin > AliTPCReconstructor::GetRecoParam()->GetLastBin())
765 allBins[iRow][iPad*fMaxTime+iTimeBin] = 0;
766 if (allBins[iRow][iPad*fMaxTime+iTimeBin] < zeroSup)
767 allBins[iRow][iPad*fMaxTime+iTimeBin] = 0;
768 if (allBins[iRow][iPad*fMaxTime+iTimeBin] < 3.0*rms) // 3 sigma cut on RMS
769 allBins[iRow][iPad*fMaxTime+iTimeBin] = 0;
774 // Now loop over rows and find clusters
775 for (fRow = 0; fRow < nRows; fRow++) {
776 fRowCl = new AliTPCClustersRow;
777 fRowCl->SetClass("AliTPCclusterMI");
779 fRowCl->SetID(fParam->GetIndex(fSector, fRow));
780 fOutput->GetBranch("Segment")->SetAddress(&fRowCl);
782 fRx = fParam->GetPadRowRadii(fSector, fRow);
783 fPadLength = fParam->GetPadPitchLength(fSector, fRow);
784 fPadWidth = fParam->GetPadPitchWidth();
786 fMaxPad = fParam->GetNPadsLow(fRow);
788 fMaxPad = fParam->GetNPadsUp(fRow);
789 fMaxBin = fMaxTime*(fMaxPad+6); // add 3 virtual pads before and 3 after
791 fBins = allBins[fRow];
792 fResBins = allBinsRes[fRow];
798 nclusters += fNcluster;
799 } // End of loop to find clusters
800 } // End of loop over sectors
802 for (Int_t iRow = 0; iRow < nRowsMax; iRow++) {
803 delete [] allBins[iRow];
804 delete [] allBinsRes[iRow];
807 delete [] allBinsRes;
809 Info("Digits2Clusters", "Event\t%d\tNumber of found clusters : %d\n", rawReader->GetEventId(), nclusters);
813 void AliTPCclustererMI::FindClusters()
815 //add virtual charge at the edge
816 for (Int_t i=0; i<fMaxTime; i++){
817 Float_t amp1 = fBins[i+3*fMaxTime];
820 Float_t amp2 = fBins[i+4*fMaxTime];
821 if (amp2==0) amp2=0.5;
822 Float_t sigma2 = GetSigmaY2(i);
823 amp0 = (amp1*amp1/amp2)*TMath::Exp(-1./sigma2);
824 if (gDebug>4) printf("\n%f\n",amp0);
826 fBins[i+2*fMaxTime] = amp0;
828 amp1 = fBins[(fMaxPad+2)*fMaxTime+i];
830 Float_t amp2 = fBins[i+(fMaxPad+1)*fMaxTime];
831 if (amp2==0) amp2=0.5;
832 Float_t sigma2 = GetSigmaY2(i);
833 amp0 = (amp1*amp1/amp2)*TMath::Exp(-1./sigma2);
834 if (gDebug>4) printf("\n%f\n",amp0);
836 fBins[(fMaxPad+3)*fMaxTime+i] = amp0;
839 // memcpy(fResBins,fBins, fMaxBin*2);
840 memcpy(fResBins,fBins, fMaxBin);
843 //first loop - for "gold cluster"
845 Float_t *b=&fBins[-1]+2*fMaxTime;
846 Int_t crtime = Int_t((fParam->GetZLength()-fRecoParam->GetCtgRange()*fRx)/fZWidth-fParam->GetNTBinsL1()-5);
848 for (Int_t i=2*fMaxTime; i<fMaxBin-2*fMaxTime; i++) {
850 if (*b<8) continue; //threshold form maxima
851 if (i%fMaxTime<crtime) {
852 Int_t delta = -(i%fMaxTime)+crtime;
858 if (!IsMaximum(*b,fMaxTime,b)) continue;
861 MakeCluster(i, fMaxTime, fBins, dummy,c);
864 //memcpy(fBins,fResBins, fMaxBin*2);
865 //second loop - for rest cluster
868 b=&fResBins[-1]+2*fMaxTime;
869 for (Int_t i=2*fMaxTime; i<fMaxBin-2*fMaxTime; i++) {
871 if (*b<25) continue; // bigger threshold for maxima
872 if (!IsMaximum(*b,fMaxTime,b)) continue;
875 MakeCluster(i, fMaxTime, fResBins, dummy,c);
882 Double_t AliTPCclustererMI::ProcesSignal(Float_t *signal, Int_t nchannels, Int_t id[3], Double_t &rmsOut){
884 // process signal on given pad - + streaming of additional information in special mode
891 // ESTIMATE pedestal and the noise
894 const Int_t kPedMax = 100;
901 UShort_t histo[kPedMax];
902 memset(histo,0,kPedMax*sizeof(UShort_t));
903 for (Int_t i=0; i<fMaxTime; i++){
904 if (signal[i]<=0) continue;
909 if (signal[i]>kPedMax-1) continue;
910 histo[int(signal[i]+0.5)]++;
914 for (Int_t i=1; i<kPedMax; i++){
915 if (count1<count0*0.5) median=i;
920 Double_t count10=histo[median] ,mean=histo[median]*median, rms=histo[median]*median*median ;
921 Double_t count06=histo[median] ,mean06=histo[median]*median, rms06=histo[median]*median*median ;
922 Double_t count09=histo[median] ,mean09=histo[median]*median, rms09=histo[median]*median*median ;
924 for (Int_t idelta=1; idelta<10; idelta++){
925 if (median-idelta<=0) continue;
926 if (median+idelta>kPedMax) continue;
927 if (count06<0.6*count1){
928 count06+=histo[median-idelta];
929 mean06 +=histo[median-idelta]*(median-idelta);
930 rms06 +=histo[median-idelta]*(median-idelta)*(median-idelta);
931 count06+=histo[median+idelta];
932 mean06 +=histo[median+idelta]*(median+idelta);
933 rms06 +=histo[median+idelta]*(median+idelta)*(median+idelta);
935 if (count09<0.9*count1){
936 count09+=histo[median-idelta];
937 mean09 +=histo[median-idelta]*(median-idelta);
938 rms09 +=histo[median-idelta]*(median-idelta)*(median-idelta);
939 count09+=histo[median+idelta];
940 mean09 +=histo[median+idelta]*(median+idelta);
941 rms09 +=histo[median+idelta]*(median+idelta)*(median+idelta);
943 if (count10<0.95*count1){
944 count10+=histo[median-idelta];
945 mean +=histo[median-idelta]*(median-idelta);
946 rms +=histo[median-idelta]*(median-idelta)*(median-idelta);
947 count10+=histo[median+idelta];
948 mean +=histo[median+idelta]*(median+idelta);
949 rms +=histo[median+idelta]*(median+idelta)*(median+idelta);
955 rms = TMath::Sqrt(TMath::Abs(rms/count10-mean*mean));
956 rms06 = TMath::Sqrt(TMath::Abs(rms06/count06-mean06*mean06));
957 rms09 = TMath::Sqrt(TMath::Abs(rms09/count09-mean09*mean09));
960 if (AliLog::GetDebugLevel("","AliTPCclustererMI")==0) return median;
962 UInt_t uid[3] = {UInt_t(id[0]),UInt_t(id[1]),UInt_t(id[2])};
964 // Dump mean signal info
966 (*fDebugStreamer)<<"Signal"<<
967 "TimeStamp="<<fTimeStamp<<
968 "EventType="<<fEventType<<
984 // fill pedestal histogram
986 AliTPCROC * roc = AliTPCROC::Instance();
987 if (!fAmplitudeHisto){
988 fAmplitudeHisto = new TObjArray(72);
991 if (uid[0]<roc->GetNSectors()
992 && uid[1]< roc->GetNRows(uid[0]) &&
993 uid[2] <roc->GetNPads(uid[0], uid[1])){
994 TObjArray * sectorArray = (TObjArray*)fAmplitudeHisto->UncheckedAt(uid[0]);
996 Int_t npads =roc->GetNChannels(uid[0]);
997 sectorArray = new TObjArray(npads);
998 fAmplitudeHisto->AddAt(sectorArray, uid[0]);
1000 Int_t position = uid[2]+roc->GetRowIndexes(uid[0])[uid[1]];
1001 TH1F * histo = (TH1F*)sectorArray->UncheckedAt(position);
1004 sprintf(hname,"Amp_%d_%d_%d",uid[0],uid[1],uid[2]);
1005 TFile * backup = gFile;
1006 fDebugStreamer->GetFile()->cd();
1007 histo = new TH1F(hname, hname, 100, 5,100);
1008 //histo->SetDirectory(0); // histogram not connected to directory -(File)
1009 sectorArray->AddAt(histo, position);
1010 if (backup) backup->cd();
1012 for (Int_t i=0; i<nchannels; i++){
1013 histo->Fill(signal[i]);
1019 Float_t kMin =fRecoParam->GetDumpAmplitudeMin(); // minimal signal to be dumped
1020 Float_t *dsignal = new Float_t[nchannels];
1021 Float_t *dtime = new Float_t[nchannels];
1022 for (Int_t i=0; i<nchannels; i++){
1024 dsignal[i] = signal[i];
1029 Bool_t random = (gRandom->Rndm()<0.0001);
1030 if (max-median>kMin || rms06>2.*fParam->GetZeroSup() || random){
1031 graph =new TGraph(nchannels, dtime, dsignal);
1032 if (rms06>2.*fParam->GetZeroSup() || random)
1033 (*fDebugStreamer)<<"SignalN"<< //noise pads - or random sample of pads
1034 "TimeStamp="<<fTimeStamp<<
1035 "EventType="<<fEventType<<
1051 if (max-median>kMin &&maxPos>AliTPCReconstructor::GetRecoParam()->GetFirstBin())
1052 (*fDebugStreamer)<<"SignalB"<< // pads with signal
1053 "TimeStamp="<<fTimeStamp<<
1054 "EventType="<<fEventType<<
1075 // Central Electrode signal analysis
1077 Double_t ceQmax =0, ceQsum=0, ceTime=0;
1078 Double_t cemean = mean06, cerms=rms06 ;
1080 Double_t ceThreshold=5.*cerms;
1081 Double_t ceSumThreshold=8.*cerms;
1082 const Int_t kCemin=5; // range for the analysis of the ce signal +- channels from the peak
1083 const Int_t kCemax=5;
1084 for (Int_t i=nchannels-2; i>nchannels/2; i--){
1085 if ( (dsignal[i]-mean06)>ceThreshold && dsignal[i]>=dsignal[i+1] && dsignal[i]>=dsignal[i-1] ){
1093 for (Int_t i=cemaxpos-20; i<cemaxpos+5; i++){
1094 if (i<0 || i>nchannels-1) continue;
1095 Double_t val=dsignal[i]- cemean;
1101 cemaxpos = cemaxpos2;
1103 for (Int_t i=cemaxpos-kCemin; i<cemaxpos+kCemax; i++){
1104 if (i>0 && i<nchannels&&dsignal[i]- cemean>0){
1105 Double_t val=dsignal[i]- cemean;
1106 ceTime+=val*dtime[i];
1108 if (val>ceQmax) ceQmax=val;
1111 if (ceQmax&&ceQsum>ceSumThreshold) {
1113 (*fDebugStreamer)<<"Signalce"<<
1114 "TimeStamp="<<fTimeStamp<<
1115 "EventType="<<fEventType<<
1127 // end of ce signal analysis
1131 // Gating grid signal analysis
1133 Double_t ggQmax =0, ggQsum=0, ggTime=0;
1134 Double_t ggmean = mean06, ggrms=rms06 ;
1136 Double_t ggThreshold=5.*ggrms;
1137 Double_t ggSumThreshold=8.*ggrms;
1139 for (Int_t i=1; i<nchannels/4; i++){
1140 if ( (dsignal[i]-mean06)>ggThreshold && dsignal[i]>=dsignal[i+1] && dsignal[i]>=dsignal[i-1] &&
1141 (dsignal[i]+dsignal[i+1]+dsignal[i-1]-3*mean06)>ggSumThreshold){
1143 if (dsignal[i-1]>dsignal[i+1]) ggmaxpos=i-1;
1148 for (Int_t i=ggmaxpos-1; i<ggmaxpos+3; i++){
1149 if (i>0 && i<nchannels && dsignal[i]-ggmean>0){
1150 Double_t val=dsignal[i]- ggmean;
1151 ggTime+=val*dtime[i];
1153 if (val>ggQmax) ggQmax=val;
1156 if (ggQmax&&ggQsum>ggSumThreshold) {
1158 (*fDebugStreamer)<<"Signalgg"<<
1159 "TimeStamp="<<fTimeStamp<<
1160 "EventType="<<fEventType<<
1172 // end of gg signal analysis
1177 if (rms06>fRecoParam->GetMaxNoise()) return 1024+median; // sign noisy channel in debug mode
1183 void AliTPCclustererMI::DumpHistos(){
1185 // Dump histogram information
1187 if (!fAmplitudeHisto) return;
1188 AliTPCROC * roc = AliTPCROC::Instance();
1189 for (UInt_t isector=0; isector<AliTPCROC::Instance()->GetNSectors(); isector++){
1190 TObjArray * array = (TObjArray*)fAmplitudeHisto->UncheckedAt(isector);
1191 if (!array) continue;
1192 for (UInt_t ipad = 0; ipad <(UInt_t)array->GetEntriesFast(); ipad++){
1193 TH1F * histo = (TH1F*) array->UncheckedAt(ipad);
1194 if (!histo) continue;
1195 if (histo->GetEntries()<100) continue;
1196 histo->Fit("gaus","q");
1197 Float_t mean = histo->GetMean();
1198 Float_t rms = histo->GetRMS();
1199 Float_t gmean = histo->GetFunction("gaus")->GetParameter(1);
1200 Float_t gsigma = histo->GetFunction("gaus")->GetParameter(2);
1201 Float_t max = histo->GetFunction("gaus")->GetParameter(0);
1204 UInt_t row=0, pad =0;
1205 const UInt_t *indexes =roc->GetRowIndexes(isector);
1206 for (UInt_t irow=0; irow<roc->GetNRows(isector); irow++){
1207 if (indexes[irow]<ipad){
1209 pad = ipad-indexes[irow];
1212 Int_t rpad = pad - (AliTPCROC::Instance()->GetNPads(isector,row))/2;
1214 (*fDebugStreamer)<<"Fit"<<
1215 "TimeStamp="<<fTimeStamp<<
1216 "EventType="<<fEventType<<
1217 "Sector="<<isector<<
1227 if (array->UncheckedAt(ipad)) fDebugStreamer->StoreObject(array->UncheckedAt(ipad));