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 "Riostream.h"
29 #include <TObjArray.h>
32 #include <TTreeStream.h>
33 #include <TVirtualFFT.h>
35 #include "AliDigits.h"
36 #include "AliLoader.h"
38 #include "AliMathBase.h"
39 #include "AliRawEventHeaderBase.h"
40 #include "AliRawReader.h"
41 #include "AliRunLoader.h"
42 #include "AliSimDigits.h"
43 #include "AliTPCCalPad.h"
44 #include "AliTPCCalROC.h"
45 #include "AliTPCClustersArray.h"
46 #include "AliTPCClustersRow.h"
47 #include "AliTPCParam.h"
48 #include "AliTPCRawStream.h"
49 #include "AliTPCRecoParam.h"
50 #include "AliTPCReconstructor.h"
51 #include "AliTPCcalibDB.h"
52 #include "AliTPCclusterInfo.h"
53 #include "AliTPCclusterMI.h"
54 #include "AliTPCclustererMI.h"
56 ClassImp(AliTPCclustererMI)
60 AliTPCclustererMI::AliTPCclustererMI(const AliTPCParam* par, const AliTPCRecoParam * recoParam):
74 fPedSubtraction(kFALSE),
75 fIsOldRCUFormat(kFALSE),
93 // param - tpc parameters for given file
94 // recoparam - reconstruction parameters
96 fIsOldRCUFormat = kFALSE;
101 fRecoParam = recoParam;
103 //set default parameters if not specified
104 fRecoParam = AliTPCReconstructor::GetRecoParam();
105 if (!fRecoParam) fRecoParam = AliTPCRecoParam::GetLowFluxParam();
107 fDebugStreamer = new TTreeSRedirector("TPCsignal.root");
109 Int_t nPoints = fRecoParam->GetLastBin()-fRecoParam->GetFirstBin();
110 fFFTr2c = TVirtualFFT::FFT(1, &nPoints, "R2C K");
112 //______________________________________________________________
113 AliTPCclustererMI::AliTPCclustererMI(const AliTPCclustererMI ¶m)
128 fPedSubtraction(kFALSE),
129 fIsOldRCUFormat(kFALSE),
146 fMaxBin = param.fMaxBin;
148 //______________________________________________________________
149 AliTPCclustererMI & AliTPCclustererMI::operator =(const AliTPCclustererMI & param)
152 // assignment operator - dummy
154 fMaxBin=param.fMaxBin;
157 //______________________________________________________________
158 AliTPCclustererMI::~AliTPCclustererMI(){
160 if (fAmplitudeHisto) delete fAmplitudeHisto;
161 if (fDebugStreamer) delete fDebugStreamer;
164 void AliTPCclustererMI::SetInput(TTree * tree)
167 // set input tree with digits
170 if (!fInput->GetBranch("Segment")){
171 cerr<<"AliTPC::Digits2Clusters(): no porper input tree !\n";
177 void AliTPCclustererMI::SetOutput(TTree * tree)
182 AliTPCClustersRow clrow;
183 AliTPCClustersRow *pclrow=&clrow;
184 clrow.SetClass("AliTPCclusterMI");
185 clrow.SetArray(1); // to make Clones array
186 fOutput->Branch("Segment","AliTPCClustersRow",&pclrow,32000,200);
190 Float_t AliTPCclustererMI::GetSigmaY2(Int_t iz){
191 // sigma y2 = in digits - we don't know the angle
192 Float_t z = iz*fParam->GetZWidth()+fParam->GetNTBinsL1()*fParam->GetZWidth();
193 Float_t sd2 = (z*fParam->GetDiffL()*fParam->GetDiffL())/
194 (fPadWidth*fPadWidth);
196 Float_t res = sd2+sres;
201 Float_t AliTPCclustererMI::GetSigmaZ2(Int_t iz){
202 //sigma z2 = in digits - angle estimated supposing vertex constraint
203 Float_t z = iz*fZWidth+fParam->GetNTBinsL1()*fParam->GetZWidth();
204 Float_t sd2 = (z*fParam->GetDiffL()*fParam->GetDiffL())/(fZWidth*fZWidth);
205 Float_t angular = fPadLength*(fParam->GetZLength(fSector)-z)/(fRx*fZWidth);
208 Float_t sres = fParam->GetZSigma()/fZWidth;
210 Float_t res = angular +sd2+sres;
214 void AliTPCclustererMI::MakeCluster(Int_t k,Int_t max,Float_t *bins, UInt_t /*m*/,
218 // k - Make cluster at position k
219 // bins - 2 D array of signals mapped to 1 dimensional array -
220 // max - the number of time bins er one dimension
221 // c - refernce to cluster to be filled
223 Int_t i0=k/max; //central pad
224 Int_t j0=k%max; //central time bin
226 // set pointers to data
227 //Int_t dummy[5] ={0,0,0,0,0};
228 Float_t * matrix[5]; //5x5 matrix with digits - indexing i = 0 ..4 j = -2..2
229 Float_t * resmatrix[5];
230 for (Int_t di=-2;di<=2;di++){
231 matrix[di+2] = &bins[k+di*max];
232 resmatrix[di+2] = &fResBins[k+di*max];
234 //build matrix with virtual charge
235 Float_t sigmay2= GetSigmaY2(j0);
236 Float_t sigmaz2= GetSigmaZ2(j0);
238 Float_t vmatrix[5][5];
239 vmatrix[2][2] = matrix[2][0];
241 c.SetMax((UShort_t)(vmatrix[2][2])); // write maximal amplitude
242 for (Int_t di =-1;di <=1;di++)
243 for (Int_t dj =-1;dj <=1;dj++){
244 Float_t amp = matrix[di+2][dj];
245 if ( (amp<2) && (fLoop<2)){
246 // if under threshold - calculate virtual charge
247 Float_t ratio = TMath::Exp(-1.2*TMath::Abs(di)/sigmay2)*TMath::Exp(-1.2*TMath::Abs(dj)/sigmaz2);
248 amp = ((matrix[2][0]-2)*(matrix[2][0]-2)/(matrix[-di+2][-dj]+2))*ratio;
250 vmatrix[2+di][2+dj]=amp;
251 vmatrix[2+2*di][2+2*dj]=0;
254 vmatrix[2+2*di][2+dj] =0;
255 vmatrix[2+di][2+2*dj] =0;
260 //if small amplitude - below 2 x threshold - don't consider other one
261 vmatrix[2+di][2+dj]=amp;
262 vmatrix[2+2*di][2+2*dj]=0; // don't take to the account next bin
265 vmatrix[2+2*di][2+dj] =0;
266 vmatrix[2+di][2+2*dj] =0;
270 //if bigger then take everything
271 vmatrix[2+di][2+dj]=amp;
272 vmatrix[2+2*di][2+2*dj]= matrix[2*di+2][2*dj] ;
275 vmatrix[2+2*di][2+dj] = matrix[2*di+2][dj];
276 vmatrix[2+di][2+2*dj] = matrix[2+di][dj*2];
288 for (Int_t i=-2;i<=2;i++)
289 for (Int_t j=-2;j<=2;j++){
290 Float_t amp = vmatrix[i+2][j+2];
299 Float_t meani = sumiw/sumw;
300 Float_t mi2 = sumi2w/sumw-meani*meani;
301 Float_t meanj = sumjw/sumw;
302 Float_t mj2 = sumj2w/sumw-meanj*meanj;
304 Float_t ry = mi2/sigmay2;
305 Float_t rz = mj2/sigmaz2;
308 if ( ( (ry<0.6) || (rz<0.6) ) && fLoop==2) return;
309 if ( (ry <1.2) && (rz<1.2) || (!fRecoParam->GetDoUnfold())) {
311 //if cluster looks like expected or Unfolding not switched on
312 //standard COG is used
313 //+1.2 deviation from expected sigma accepted
314 // c.fMax = FitMax(vmatrix,meani,meanj,TMath::Sqrt(sigmay2),TMath::Sqrt(sigmaz2));
318 //set cluster parameters
320 c.SetY(meani*fPadWidth);
321 c.SetZ(meanj*fZWidth);
326 AddCluster(c,(Float_t*)vmatrix,k);
327 //remove cluster data from data
328 for (Int_t di=-2;di<=2;di++)
329 for (Int_t dj=-2;dj<=2;dj++){
330 resmatrix[di+2][dj] -= vmatrix[di+2][dj+2];
331 if (resmatrix[di+2][dj]<0) resmatrix[di+2][dj]=0;
338 //unfolding when neccessary
341 Float_t * matrix2[7]; //7x7 matrix with digits - indexing i = 0 ..6 j = -3..3
342 Float_t dummy[7]={0,0,0,0,0,0};
343 for (Int_t di=-3;di<=3;di++){
344 matrix2[di+3] = &bins[k+di*max];
345 if ((k+di*max)<3) matrix2[di+3] = &dummy[3];
346 if ((k+di*max)>fMaxBin-3) matrix2[di+3] = &dummy[3];
348 Float_t vmatrix2[5][5];
351 UnfoldCluster(matrix2,vmatrix2,meani,meanj,sumu,overlap);
353 // c.fMax = FitMax(vmatrix2,meani,meanj,TMath::Sqrt(sigmay2),TMath::Sqrt(sigmaz2));
356 //set cluster parameters
358 c.SetY(meani*fPadWidth);
359 c.SetZ(meanj*fZWidth);
364 c.SetType(Char_t(overlap)+1);
365 AddCluster(c,(Float_t*)vmatrix,k);
371 printf("%f\t%f\n", vmatrix2[2][2], vmatrix[2][2]);
376 void AliTPCclustererMI::UnfoldCluster(Float_t * matrix2[7], Float_t recmatrix[5][5], Float_t & meani, Float_t & meanj,
377 Float_t & sumu, Float_t & overlap )
380 //unfold cluster from input matrix
381 //data corresponding to cluster writen in recmatrix
382 //output meani and meanj
384 //take separatelly y and z
386 Float_t sum3i[7] = {0,0,0,0,0,0,0};
387 Float_t sum3j[7] = {0,0,0,0,0,0,0};
389 for (Int_t k =0;k<7;k++)
390 for (Int_t l = -1; l<=1;l++){
391 sum3i[k]+=matrix2[k][l];
392 sum3j[k]+=matrix2[l+3][k-3];
394 Float_t mratio[3][3]={{1,1,1},{1,1,1},{1,1,1}};
397 Float_t sum3wi = 0; //charge minus overlap
398 Float_t sum3wio = 0; //full charge
399 Float_t sum3iw = 0; //sum for mean value
400 for (Int_t dk=-1;dk<=1;dk++){
401 sum3wio+=sum3i[dk+3];
407 if ( ( ((sum3i[dk+3]+3)/(sum3i[3]-3))+1 < (sum3i[2*dk+3]-3)/(sum3i[dk+3]+3))||
408 sum3i[dk+3]<=sum3i[2*dk+3] && sum3i[dk+3]>2 ){
409 Float_t xm2 = sum3i[-dk+3];
410 Float_t xm1 = sum3i[+3];
411 Float_t x1 = sum3i[2*dk+3];
412 Float_t x2 = sum3i[3*dk+3];
413 Float_t w11 = TMath::Max((Float_t)(4.*xm1-xm2),(Float_t)0.000001);
414 Float_t w12 = TMath::Max((Float_t)(4 *x1 -x2),(Float_t)0.);
415 ratio = w11/(w11+w12);
416 for (Int_t dl=-1;dl<=1;dl++)
417 mratio[dk+1][dl+1] *= ratio;
419 Float_t amp = sum3i[dk+3]*ratio;
424 meani = sum3iw/sum3wi;
425 Float_t overlapi = (sum3wio-sum3wi)/sum3wio;
430 Float_t sum3wj = 0; //charge minus overlap
431 Float_t sum3wjo = 0; //full charge
432 Float_t sum3jw = 0; //sum for mean value
433 for (Int_t dk=-1;dk<=1;dk++){
434 sum3wjo+=sum3j[dk+3];
440 if ( ( ((sum3j[dk+3]+3)/(sum3j[3]-3))+1 < (sum3j[2*dk+3]-3)/(sum3j[dk+3]+3)) ||
441 (sum3j[dk+3]<=sum3j[2*dk+3] && sum3j[dk+3]>2)){
442 Float_t xm2 = sum3j[-dk+3];
443 Float_t xm1 = sum3j[+3];
444 Float_t x1 = sum3j[2*dk+3];
445 Float_t x2 = sum3j[3*dk+3];
446 Float_t w11 = TMath::Max((Float_t)(4.*xm1-xm2),(Float_t)0.000001);
447 Float_t w12 = TMath::Max((Float_t)(4 *x1 -x2),(Float_t)0.);
448 ratio = w11/(w11+w12);
449 for (Int_t dl=-1;dl<=1;dl++)
450 mratio[dl+1][dk+1] *= ratio;
452 Float_t amp = sum3j[dk+3]*ratio;
457 meanj = sum3jw/sum3wj;
458 Float_t overlapj = (sum3wjo-sum3wj)/sum3wjo;
459 overlap = Int_t(100*TMath::Max(overlapi,overlapj)+3);
460 sumu = (sum3wj+sum3wi)/2.;
463 //if not overlap detected remove everything
464 for (Int_t di =-2; di<=2;di++)
465 for (Int_t dj =-2; dj<=2;dj++){
466 recmatrix[di+2][dj+2] = matrix2[3+di][dj];
470 for (Int_t di =-1; di<=1;di++)
471 for (Int_t dj =-1; dj<=1;dj++){
473 if (mratio[di+1][dj+1]==1){
474 recmatrix[di+2][dj+2] = matrix2[3+di][dj];
475 if (TMath::Abs(di)+TMath::Abs(dj)>1){
476 recmatrix[2*di+2][dj+2] = matrix2[3+2*di][dj];
477 recmatrix[di+2][2*dj+2] = matrix2[3+di][2*dj];
479 recmatrix[2*di+2][2*dj+2] = matrix2[3+2*di][2*dj];
483 //if we have overlap in direction
484 recmatrix[di+2][dj+2] = mratio[di+1][dj+1]* matrix2[3+di][dj];
485 if (TMath::Abs(di)+TMath::Abs(dj)>1){
486 ratio = TMath::Min((Float_t)(recmatrix[di+2][dj+2]/(matrix2[3+0*di][1*dj]+1)),(Float_t)1.);
487 recmatrix[2*di+2][dj+2] = ratio*recmatrix[di+2][dj+2];
489 ratio = TMath::Min((Float_t)(recmatrix[di+2][dj+2]/(matrix2[3+1*di][0*dj]+1)),(Float_t)1.);
490 recmatrix[di+2][2*dj+2] = ratio*recmatrix[di+2][dj+2];
493 ratio = recmatrix[di+2][dj+2]/matrix2[3][0];
494 recmatrix[2*di+2][2*dj+2] = ratio*recmatrix[di+2][dj+2];
500 printf("%f\n", recmatrix[2][2]);
504 Float_t AliTPCclustererMI::FitMax(Float_t vmatrix[5][5], Float_t y, Float_t z, Float_t sigmay, Float_t sigmaz)
511 for (Int_t di = -1;di<=1;di++)
512 for (Int_t dj = -1;dj<=1;dj++){
513 if (vmatrix[2+di][2+dj]>2){
514 Float_t teor = TMath::Gaus(di,y,sigmay*1.2)*TMath::Gaus(dj,z,sigmaz*1.2);
515 sumteor += teor*vmatrix[2+di][2+dj];
516 sumamp += vmatrix[2+di][2+dj]*vmatrix[2+di][2+dj];
519 Float_t max = sumamp/sumteor;
523 void AliTPCclustererMI::AddCluster(AliTPCclusterMI &c, Float_t * matrix, Int_t pos){
525 // transform cluster to the global coordinata
526 // add the cluster to the array
528 Float_t meani = c.GetY()/fPadWidth;
529 Float_t meanj = c.GetZ()/fZWidth;
531 Int_t ki = TMath::Nint(meani-3);
533 if (ki>=fMaxPad) ki = fMaxPad-1;
534 Int_t kj = TMath::Nint(meanj-3);
536 if (kj>=fMaxTime-3) kj=fMaxTime-4;
537 // ki and kj shifted to "real" coordinata
539 c.SetLabel(fRowDig->GetTrackIDFast(kj,ki,0)-2,0);
540 c.SetLabel(fRowDig->GetTrackIDFast(kj,ki,1)-2,1);
541 c.SetLabel(fRowDig->GetTrackIDFast(kj,ki,2)-2,2);
545 Float_t s2 = c.GetSigmaY2();
546 Float_t w=fParam->GetPadPitchWidth(fSector);
548 c.SetSigmaY2(s2*w*w);
551 c.SetSigmaZ2(s2*w*w);
552 c.SetY((meani - 2.5 - 0.5*fMaxPad)*fParam->GetPadPitchWidth(fSector));
553 if (!fRecoParam->GetBYMirror()){
555 c.SetY(-(meani - 2.5 - 0.5*fMaxPad)*fParam->GetPadPitchWidth(fSector));
558 c.SetZ(fZWidth*(meanj-3));
559 c.SetZ(c.GetZ() - 3.*fParam->GetZSigma() + fParam->GetNTBinsL1()*fParam->GetZWidth()); // PASA delay + L1 delay
560 c.SetZ(fSign*(fParam->GetZLength(fSector) - c.GetZ()));
562 c.SetDetector(fSector);
565 if (ki<=1 || ki>=fMaxPad-1 || kj==1 || kj==fMaxTime-2) {
566 //c.SetSigmaY2(c.GetSigmaY2()*25.);
567 //c.SetSigmaZ2(c.GetSigmaZ2()*4.);
568 c.SetType(-(c.GetType()+3)); //edge clusters
570 if (fLoop==2) c.SetType(100);
572 TClonesArray * arr = fRowCl->GetArray();
573 AliTPCclusterMI * cl = new ((*arr)[fNcluster]) AliTPCclusterMI(c);
577 if (fRecoParam->GetCalcPedestal() && cl->GetMax()>fRecoParam->GetDumpAmplitudeMin() &&fBDumpSignal){
579 graph = &(fBins[fMaxTime*(pos/fMaxTime)]);
581 AliTPCclusterInfo * info = new AliTPCclusterInfo(matrix,nbins,graph);
589 //_____________________________________________________________________________
590 void AliTPCclustererMI::Digits2Clusters()
592 //-----------------------------------------------------------------
593 // This is a simple cluster finder.
594 //-----------------------------------------------------------------
597 Error("Digits2Clusters", "input tree not initialised");
602 Error("Digits2Clusters", "output tree not initialised");
606 AliTPCCalPad * gainTPC = AliTPCcalibDB::Instance()->GetPadGainFactor();
607 AliTPCCalPad * noiseTPC = AliTPCcalibDB::Instance()->GetPadNoise();
609 AliSimDigits digarr, *dummy=&digarr;
611 fInput->GetBranch("Segment")->SetAddress(&dummy);
612 Stat_t nentries = fInput->GetEntries();
614 fMaxTime=fParam->GetMaxTBin()+6; // add 3 virtual time bins before and 3 after
618 for (Int_t n=0; n<nentries; n++) {
620 if (!fParam->AdjustSectorRow(digarr.GetID(),fSector,fRow)) {
621 cerr<<"AliTPC warning: invalid segment ID ! "<<digarr.GetID()<<endl;
625 AliTPCCalROC * gainROC = gainTPC->GetCalROC(fSector); // pad gains per given sector
626 AliTPCCalROC * noiseROC = noiseTPC->GetCalROC(fSector); // noise per given sector
628 AliTPCClustersRow *clrow= new AliTPCClustersRow();
630 clrow->SetClass("AliTPCclusterMI");
633 clrow->SetID(digarr.GetID());
634 fOutput->GetBranch("Segment")->SetAddress(&clrow);
635 fRx=fParam->GetPadRowRadii(fSector,row);
638 const Int_t kNIS=fParam->GetNInnerSector(), kNOS=fParam->GetNOuterSector();
639 fZWidth = fParam->GetZWidth();
640 if (fSector < kNIS) {
641 fMaxPad = fParam->GetNPadsLow(row);
642 fSign = (fSector < kNIS/2) ? 1 : -1;
643 fPadLength = fParam->GetPadPitchLength(fSector,row);
644 fPadWidth = fParam->GetPadPitchWidth();
646 fMaxPad = fParam->GetNPadsUp(row);
647 fSign = ((fSector-kNIS) < kNOS/2) ? 1 : -1;
648 fPadLength = fParam->GetPadPitchLength(fSector,row);
649 fPadWidth = fParam->GetPadPitchWidth();
653 fMaxBin=fMaxTime*(fMaxPad+6); // add 3 virtual pads before and 3 after
654 fBins =new Float_t[fMaxBin];
655 fResBins =new Float_t[fMaxBin]; //fBins with residuals after 1 finder loop
656 memset(fBins,0,sizeof(Float_t)*fMaxBin);
657 memset(fResBins,0,sizeof(Float_t)*fMaxBin);
659 if (digarr.First()) //MI change
661 Float_t dig=digarr.CurrentDigit();
662 if (dig<=fParam->GetZeroSup()) continue;
663 Int_t j=digarr.CurrentRow()+3, i=digarr.CurrentColumn()+3;
664 Float_t gain = gainROC->GetValue(row,digarr.CurrentColumn());
665 fBins[i*fMaxTime+j]=dig/gain;
666 } while (digarr.Next());
667 digarr.ExpandTrackBuffer();
669 FindClusters(noiseROC);
673 nclusters+=fNcluster;
678 Info("Digits2Clusters", "Number of found clusters : %d", nclusters);
681 void AliTPCclustererMI::Digits2Clusters(AliRawReader* rawReader)
683 //-----------------------------------------------------------------
684 // This is a cluster finder for the TPC raw data.
685 // The method assumes NO ordering of the altro channels.
686 // The pedestal subtraction can be switched on and off
687 // using an option of the TPC reconstructor
688 //-----------------------------------------------------------------
691 Error("Digits2Clusters", "output tree not initialised");
696 AliTPCROC * roc = AliTPCROC::Instance();
697 AliTPCCalPad * gainTPC = AliTPCcalibDB::Instance()->GetPadGainFactor();
698 AliTPCCalPad * pedestalTPC = AliTPCcalibDB::Instance()->GetPedestals();
699 AliTPCCalPad * noiseTPC = AliTPCcalibDB::Instance()->GetPadNoise();
700 AliTPCRawStream input(rawReader);
701 fEventHeader = (AliRawEventHeaderBase*)rawReader->GetEventHeader();
703 fTimeStamp = fEventHeader->Get("Timestamp");
704 fEventType = fEventHeader->Get("Type");
710 fMaxTime = fParam->GetMaxTBin() + 6; // add 3 virtual time bins before and 3 after
711 const Int_t kNIS = fParam->GetNInnerSector();
712 const Int_t kNOS = fParam->GetNOuterSector();
713 const Int_t kNS = kNIS + kNOS;
714 fZWidth = fParam->GetZWidth();
715 Int_t zeroSup = fParam->GetZeroSup();
717 //alocate memory for sector - maximal case
719 Float_t** allBins = NULL;
720 Float_t** allBinsRes = NULL;
721 Int_t nRowsMax = roc->GetNRows(roc->GetNSector()-1);
722 Int_t nPadsMax = roc->GetNPads(roc->GetNSector()-1,nRowsMax-1);
723 allBins = new Float_t*[nRowsMax];
724 allBinsRes = new Float_t*[nRowsMax];
725 for (Int_t iRow = 0; iRow < nRowsMax; iRow++) {
727 Int_t maxBin = fMaxTime*(nPadsMax+6); // add 3 virtual pads before and 3 after
728 allBins[iRow] = new Float_t[maxBin];
729 allBinsRes[iRow] = new Float_t[maxBin];
730 memset(allBins[iRow],0,sizeof(Float_t)*maxBin);
735 for(fSector = 0; fSector < kNS; fSector++) {
737 AliTPCCalROC * gainROC = gainTPC->GetCalROC(fSector); // pad gains per given sector
738 AliTPCCalROC * pedestalROC = pedestalTPC->GetCalROC(fSector); // pedestal per given sector
739 AliTPCCalROC * noiseROC = noiseTPC->GetCalROC(fSector); // noise per given sector
742 Int_t nDDLs = 0, indexDDL = 0;
743 if (fSector < kNIS) {
744 nRows = fParam->GetNRowLow();
745 fSign = (fSector < kNIS/2) ? 1 : -1;
747 indexDDL = fSector * 2;
750 nRows = fParam->GetNRowUp();
751 fSign = ((fSector-kNIS) < kNOS/2) ? 1 : -1;
753 indexDDL = (fSector-kNIS) * 4 + kNIS * 2;
756 for (Int_t iRow = 0; iRow < nRows; iRow++) {
759 maxPad = fParam->GetNPadsLow(iRow);
761 maxPad = fParam->GetNPadsUp(iRow);
763 Int_t maxBin = fMaxTime*(maxPad+6); // add 3 virtual pads before and 3 after
764 memset(allBins[iRow],0,sizeof(Float_t)*maxBin);
767 // Loas the raw data for corresponding DDLs
769 input.SetOldRCUFormat(fIsOldRCUFormat);
770 rawReader->Select("TPC",indexDDL,indexDDL+nDDLs-1);
772 // Begin loop over altro data
773 Bool_t calcPedestal = fRecoParam->GetCalcPedestal();
776 while (input.Next()) {
778 if (input.GetSector() != fSector)
779 AliFatal(Form("Sector index mismatch ! Expected (%d), but got (%d) !",fSector,input.GetSector()));
782 Int_t iRow = input.GetRow();
783 if (iRow < 0 || iRow >= nRows)
784 AliFatal(Form("Pad-row index (%d) outside the range (%d -> %d) !",
787 Int_t iPad = input.GetPad();
788 if (iPad < 0 || iPad >= nPadsMax)
789 AliFatal(Form("Pad index (%d) outside the range (%d -> %d) !",
790 iPad, 0, nPadsMax-1));
792 gain = gainROC->GetValue(iRow,iPad);
797 Int_t iTimeBin = input.GetTime();
798 if ( iTimeBin < 0 || iTimeBin >= fParam->GetMaxTBin())
799 AliFatal(Form("Timebin index (%d) outside the range (%d -> %d) !",
800 iTimeBin, 0, iTimeBin -1));
803 Float_t signal = input.GetSignal();
804 if (!calcPedestal && signal <= zeroSup) continue;
806 allBins[iRow][iPad*fMaxTime+iTimeBin] = signal/gain;
808 allBins[iRow][iPad*fMaxTime+iTimeBin] = signal;
810 allBins[iRow][iPad*fMaxTime+0]=1.; // pad with signal
811 } // End of the loop over altro data
814 // Now loop over rows and perform pedestal subtraction
815 if (digCounter==0) continue;
816 // if (fPedSubtraction) {
818 for (Int_t iRow = 0; iRow < nRows; iRow++) {
821 maxPad = fParam->GetNPadsLow(iRow);
823 maxPad = fParam->GetNPadsUp(iRow);
825 for (Int_t iPad = 3; iPad < maxPad + 3; iPad++) {
826 if (allBins[iRow][iPad*fMaxTime+0] <1 ) continue; // no data
827 Float_t *p = &allBins[iRow][iPad*fMaxTime+3];
828 //Float_t pedestal = TMath::Median(fMaxTime, p);
829 Int_t id[3] = {fSector, iRow, iPad-3};
831 Double_t rmsCalib= noiseROC->GetValue(iRow,iPad-3);
832 Double_t pedestalCalib = pedestalROC->GetValue(iRow,iPad-3);
833 Double_t rmsEvent = rmsCalib;
834 Double_t pedestalEvent = pedestalCalib;
835 ProcesSignal(p, fMaxTime, id, rmsEvent, pedestalEvent);
836 if (rmsEvent<rmsCalib) rmsEvent = rmsCalib; // take worst scenario
837 if (TMath::Abs(pedestalEvent-pedestalCalib)<1.0) pedestalEvent = pedestalCalib;
840 for (Int_t iTimeBin = 0; iTimeBin < fMaxTime; iTimeBin++) {
841 allBins[iRow][iPad*fMaxTime+iTimeBin] -= pedestalEvent;
842 if (iTimeBin < AliTPCReconstructor::GetRecoParam()->GetFirstBin())
843 allBins[iRow][iPad*fMaxTime+iTimeBin] = 0;
844 if (iTimeBin > AliTPCReconstructor::GetRecoParam()->GetLastBin())
845 allBins[iRow][iPad*fMaxTime+iTimeBin] = 0;
846 if (allBins[iRow][iPad*fMaxTime+iTimeBin] < zeroSup)
847 allBins[iRow][iPad*fMaxTime+iTimeBin] = 0;
848 if (allBins[iRow][iPad*fMaxTime+iTimeBin] < 3.0*rmsEvent) // 3 sigma cut on RMS
849 allBins[iRow][iPad*fMaxTime+iTimeBin] = 0;
854 // Now loop over rows and find clusters
855 for (fRow = 0; fRow < nRows; fRow++) {
856 fRowCl = new AliTPCClustersRow;
857 fRowCl->SetClass("AliTPCclusterMI");
859 fRowCl->SetID(fParam->GetIndex(fSector, fRow));
860 fOutput->GetBranch("Segment")->SetAddress(&fRowCl);
862 fRx = fParam->GetPadRowRadii(fSector, fRow);
863 fPadLength = fParam->GetPadPitchLength(fSector, fRow);
864 fPadWidth = fParam->GetPadPitchWidth();
866 fMaxPad = fParam->GetNPadsLow(fRow);
868 fMaxPad = fParam->GetNPadsUp(fRow);
869 fMaxBin = fMaxTime*(fMaxPad+6); // add 3 virtual pads before and 3 after
871 fBins = allBins[fRow];
872 fResBins = allBinsRes[fRow];
874 FindClusters(noiseROC);
878 nclusters += fNcluster;
879 } // End of loop to find clusters
880 } // End of loop over sectors
882 for (Int_t iRow = 0; iRow < nRowsMax; iRow++) {
883 delete [] allBins[iRow];
884 delete [] allBinsRes[iRow];
887 delete [] allBinsRes;
889 Info("Digits2Clusters", "File %s Event\t%d\tNumber of found clusters : %d\n", fOutput->GetName(),*(rawReader->GetEventId()), nclusters);
893 void AliTPCclustererMI::FindClusters(AliTPCCalROC * noiseROC)
897 // add virtual charge at the edge
899 Double_t kMaxDumpSize = 500000;
900 if (fRecoParam->GetCalcPedestal() && fOutput->GetZipBytes()< kMaxDumpSize) fBDumpSignal =kTRUE; //dump signal flag
902 if (0) for (Int_t i=0; i<fMaxTime; i++){
903 Float_t amp1 = fBins[i+3*fMaxTime];
906 Float_t amp2 = fBins[i+4*fMaxTime];
907 if (amp2==0) amp2=0.5;
908 Float_t sigma2 = GetSigmaY2(i);
909 amp0 = (amp1*amp1/amp2)*TMath::Exp(-1./sigma2);
910 if (gDebug>4) printf("\n%f\n",amp0);
912 fBins[i+2*fMaxTime] = amp0;
914 amp1 = fBins[(fMaxPad+2)*fMaxTime+i];
916 Float_t amp2 = fBins[i+(fMaxPad+1)*fMaxTime];
917 if (amp2==0) amp2=0.5;
918 Float_t sigma2 = GetSigmaY2(i);
919 amp0 = (amp1*amp1/amp2)*TMath::Exp(-1./sigma2);
920 if (gDebug>4) printf("\n%f\n",amp0);
922 fBins[(fMaxPad+3)*fMaxTime+i] = amp0;
924 memcpy(fResBins,fBins, fMaxBin*sizeof(Float_t));
930 Float_t *b=&fBins[-1]+2*fMaxTime;
931 Int_t crtime = Int_t((fParam->GetZLength(fSector)-fRecoParam->GetCtgRange()*fRx)/fZWidth-fParam->GetNTBinsL1()-5);
932 Float_t minMaxCutAbs = fRecoParam->GetMinMaxCutAbs();
933 Float_t minLeftRightCutAbs = fRecoParam->GetMinLeftRightCutAbs();
934 Float_t minUpDownCutAbs = fRecoParam->GetMinUpDownCutAbs();
935 Float_t minMaxCutSigma = fRecoParam->GetMinMaxCutSigma();
936 Float_t minLeftRightCutSigma = fRecoParam->GetMinLeftRightCutSigma();
937 Float_t minUpDownCutSigma = fRecoParam->GetMinUpDownCutSigma();
938 for (Int_t i=2*fMaxTime; i<fMaxBin-2*fMaxTime; i++) {
940 if (i%fMaxTime<crtime) {
941 Int_t delta = -(i%fMaxTime)+crtime;
947 if (b[0]<minMaxCutAbs) continue; //threshold for maxima
949 if (b[-1]+b[1]+b[-fMaxTime]+b[fMaxTime]<=0) continue; // cut on isolated clusters
950 // if (b[-1]+b[1]<=0) continue; // cut on isolated clusters
951 //if (b[-fMaxTime]+b[fMaxTime]<=0) continue; // cut on isolated clusters
953 if ((b[0]+b[-1]+b[1])<minUpDownCutAbs) continue; //threshold for up down (TRF)
954 if ((b[0]+b[-fMaxTime]+b[fMaxTime])<minLeftRightCutAbs) continue; //threshold for left right (PRF)
955 if (!IsMaximum(*b,fMaxTime,b)) continue;
957 Float_t noise = noiseROC->GetValue(fRow, i/fMaxTime);
959 if (b[0]<minMaxCutSigma*noise) continue; //threshold form maxima
960 if ((b[0]+b[-1]+b[1])<minUpDownCutSigma*noise) continue; //threshold for up town TRF
961 if ((b[0]+b[-fMaxTime]+b[fMaxTime])<minLeftRightCutSigma*noise) continue; //threshold for left right (PRF)
963 AliTPCclusterMI c(kFALSE); // default cosntruction without info
965 MakeCluster(i, fMaxTime, fBins, dummy,c);
972 Double_t AliTPCclustererMI::ProcesSignal(Float_t *signal, Int_t nchannels, Int_t id[3], Double_t &rmsEvent, Double_t &pedestalEvent){
974 // process signal on given pad - + streaming of additional information in special mode
981 // ESTIMATE pedestal and the noise
983 const Int_t kPedMax = 100;
984 Double_t kMaxDebugSize = 5000000.;
990 Float_t rmsCalib = rmsEvent; // backup initial value ( from calib)
991 Float_t pedestalCalib = pedestalEvent;// backup initial value ( from calib)
992 Int_t firstBin = AliTPCReconstructor::GetRecoParam()->GetFirstBin();
994 UShort_t histo[kPedMax];
995 memset(histo,0,kPedMax*sizeof(UShort_t));
996 for (Int_t i=0; i<fMaxTime; i++){
997 if (signal[i]<=0) continue;
998 if (signal[i]>max && i>firstBin) {
1002 if (signal[i]>kPedMax-1) continue;
1003 histo[int(signal[i]+0.5)]++;
1007 for (Int_t i=1; i<kPedMax; i++){
1008 if (count1<count0*0.5) median=i;
1013 Float_t count10=histo[median] ,mean=histo[median]*median, rms=histo[median]*median*median ;
1014 Float_t count06=histo[median] ,mean06=histo[median]*median, rms06=histo[median]*median*median ;
1015 Float_t count09=histo[median] ,mean09=histo[median]*median, rms09=histo[median]*median*median ;
1017 for (Int_t idelta=1; idelta<10; idelta++){
1018 if (median-idelta<=0) continue;
1019 if (median+idelta>kPedMax) continue;
1020 if (count06<0.6*count1){
1021 count06+=histo[median-idelta];
1022 mean06 +=histo[median-idelta]*(median-idelta);
1023 rms06 +=histo[median-idelta]*(median-idelta)*(median-idelta);
1024 count06+=histo[median+idelta];
1025 mean06 +=histo[median+idelta]*(median+idelta);
1026 rms06 +=histo[median+idelta]*(median+idelta)*(median+idelta);
1028 if (count09<0.9*count1){
1029 count09+=histo[median-idelta];
1030 mean09 +=histo[median-idelta]*(median-idelta);
1031 rms09 +=histo[median-idelta]*(median-idelta)*(median-idelta);
1032 count09+=histo[median+idelta];
1033 mean09 +=histo[median+idelta]*(median+idelta);
1034 rms09 +=histo[median+idelta]*(median+idelta)*(median+idelta);
1036 if (count10<0.95*count1){
1037 count10+=histo[median-idelta];
1038 mean +=histo[median-idelta]*(median-idelta);
1039 rms +=histo[median-idelta]*(median-idelta)*(median-idelta);
1040 count10+=histo[median+idelta];
1041 mean +=histo[median+idelta]*(median+idelta);
1042 rms +=histo[median+idelta]*(median+idelta)*(median+idelta);
1048 rms = TMath::Sqrt(TMath::Abs(rms/count10-mean*mean));
1049 rms06 = TMath::Sqrt(TMath::Abs(rms06/count06-mean06*mean06));
1050 rms09 = TMath::Sqrt(TMath::Abs(rms09/count09-mean09*mean09));
1053 pedestalEvent = median;
1054 if (AliLog::GetDebugLevel("","AliTPCclustererMI")==0) return median;
1056 UInt_t uid[3] = {UInt_t(id[0]),UInt_t(id[1]),UInt_t(id[2])};
1058 // Dump mean signal info
1060 (*fDebugStreamer)<<"Signal"<<
1061 "TimeStamp="<<fTimeStamp<<
1062 "EventType="<<fEventType<<
1076 "RMSCalib="<<rmsCalib<<
1077 "PedCalib="<<pedestalCalib<<
1080 // fill pedestal histogram
1082 AliTPCROC * roc = AliTPCROC::Instance();
1083 if (!fAmplitudeHisto){
1084 fAmplitudeHisto = new TObjArray(72);
1087 if (uid[0]<roc->GetNSectors()
1088 && uid[1]< roc->GetNRows(uid[0]) &&
1089 uid[2] <roc->GetNPads(uid[0], uid[1])){
1090 TObjArray * sectorArray = (TObjArray*)fAmplitudeHisto->UncheckedAt(uid[0]);
1092 Int_t npads =roc->GetNChannels(uid[0]);
1093 sectorArray = new TObjArray(npads);
1094 fAmplitudeHisto->AddAt(sectorArray, uid[0]);
1096 Int_t position = uid[2]+roc->GetRowIndexes(uid[0])[uid[1]];
1097 TH1F * histo = (TH1F*)sectorArray->UncheckedAt(position);
1100 sprintf(hname,"Amp_%d_%d_%d",uid[0],uid[1],uid[2]);
1101 TFile * backup = gFile;
1102 fDebugStreamer->GetFile()->cd();
1103 histo = new TH1F(hname, hname, 100, 5,100);
1104 //histo->SetDirectory(0); // histogram not connected to directory -(File)
1105 sectorArray->AddAt(histo, position);
1106 if (backup) backup->cd();
1108 for (Int_t i=0; i<nchannels; i++){
1109 histo->Fill(signal[i]);
1115 Float_t kMin =fRecoParam->GetDumpAmplitudeMin(); // minimal signal to be dumped
1116 Float_t *dsignal = new Float_t[nchannels];
1117 Float_t *dtime = new Float_t[nchannels];
1118 for (Int_t i=0; i<nchannels; i++){
1120 dsignal[i] = signal[i];
1125 // if (max-median>30.*TMath::Max(1.,Double_t(rms06)) && (((*fDebugStreamer)<<"SignalDN").GetSize()<kMaxDebugSize)){
1128 // TGraph * graph =new TGraph(nchannels, dtime, dsignal);
1131 // // jumps left - right
1133 // Double_t deltaT0[2000];
1134 // Double_t deltaA0[2000];
1135 // Int_t lastJump0 = fRecoParam->GetFirstBin();
1137 // Double_t deltaT1[2000];
1138 // Double_t deltaA1[2000];
1139 // Int_t lastJump1 = fRecoParam->GetFirstBin();
1141 // Double_t deltaT2[2000];
1142 // Double_t deltaA2[2000];
1143 // Int_t lastJump2 = fRecoParam->GetFirstBin();
1145 // for (Int_t itime=fRecoParam->GetFirstBin()+1; itime<fRecoParam->GetLastBin()-1; itime++){
1146 // if (TMath::Abs(dsignal[itime]-dsignal[itime-1])>30.*TMath::Max(1.,Double_t(rms06)) &&
1147 // TMath::Abs(dsignal[itime]-dsignal[itime+1])>30.*TMath::Max(1.,Double_t(rms06)) &&
1148 // (dsignal[itime-1]-median<5.*rms06) &&
1149 // (dsignal[itime+1]-median<5.*rms06)
1151 // deltaA0[njumps0] = dsignal[itime]-dsignal[itime-1];
1152 // deltaT0[njumps0] = itime-lastJump0;
1153 // lastJump0 = itime;
1156 // if (TMath::Abs(dsignal[itime]-dsignal[itime-1])>30.*TMath::Max(1.,Double_t(rms06)) &&
1157 // (dsignal[itime-1]-median<5.*rms06)
1159 // deltaA1[njumps1] = dsignal[itime]-dsignal[itime-1];
1160 // deltaT1[njumps1] = itime-lastJump1;
1161 // lastJump1 = itime;
1164 // if (TMath::Abs(dsignal[itime]-dsignal[itime+1])>30.*TMath::Max(1.,Double_t(rms06)) &&
1165 // (dsignal[itime+1]-median<5.*rms06)
1167 // deltaA2[njumps2] = dsignal[itime]-dsignal[itime+1];
1168 // deltaT2[njumps2] = itime-lastJump2;
1169 // lastJump2 = itime;
1174 // if (njumps0>0 || njumps1>0 || njumps2>0){
1175 // TGraph *graphDN0 = new TGraph(njumps0, deltaT0, deltaA0);
1176 // TGraph *graphDN1 = new TGraph(njumps1, deltaT1, deltaA1);
1177 // TGraph *graphDN2 = new TGraph(njumps2, deltaT2, deltaA2);
1178 // (*fDebugStreamer)<<"SignalDN"<< //digital - noise pads - or random sample of pads
1179 // "TimeStamp="<<fTimeStamp<<
1180 // "EventType="<<fEventType<<
1181 // "Sector="<<uid[0]<<
1184 // "Graph="<<graph<<
1186 // "MaxPos="<<maxPos<<
1187 // "Graph.="<<graph<<
1188 // "P0GraphDN0.="<<graphDN0<<
1189 // "P1GraphDN1.="<<graphDN1<<
1190 // "P2GraphDN2.="<<graphDN2<<
1192 // "Median="<<median<<
1195 // "Mean06="<<mean06<<
1196 // "RMS06="<<rms06<<
1197 // "Mean09="<<mean09<<
1198 // "RMS09="<<rms09<<
1208 // NOISE STUDY Fourier transform
1211 Bool_t random = (gRandom->Rndm()<0.0003);
1212 if (((*fDebugStreamer)<<"SignalN").GetSize()<kMaxDebugSize)
1213 if (max-median>kMin || rms06>1.*fParam->GetZeroSup() || random){
1214 graph =new TGraph(nchannels, dtime, dsignal);
1215 if (rms06>1.*fParam->GetZeroSup() || random){
1216 //Double_t *input, Double_t threshold, Bool_t locMax, Double_t *freq, Double_t *re, Double_t *im, Double_t *mag, Double_t *phi);
1217 Float_t * input = &(dsignal[fRecoParam->GetFirstBin()]);
1218 Float_t freq[2000], re[2000], im[2000], mag[2000], phi[2000];
1219 Int_t npoints = TransformFFT(input, -1,kFALSE, freq, re, im, mag, phi);
1220 TGraph *graphMag0 = new TGraph(npoints, freq, mag);
1221 TGraph *graphPhi0 = new TGraph(npoints, freq, phi);
1222 npoints = TransformFFT(input, 0.5,kTRUE, freq, re, im, mag, phi);
1223 TGraph *graphMag1 = new TGraph(npoints, freq, mag);
1224 TGraph *graphPhi1 = new TGraph(npoints, freq, phi);
1226 (*fDebugStreamer)<<"SignalN"<< //noise pads - or random sample of pads
1227 "TimeStamp="<<fTimeStamp<<
1228 "EventType="<<fEventType<<
1244 "Mag0.="<<graphMag0<<
1245 "Mag1.="<<graphMag1<<
1246 "Phi0.="<<graphPhi0<<
1247 "Phi1.="<<graphPhi1<<
1255 // Big signals dumping
1258 if (max-median>kMin &&maxPos>AliTPCReconstructor::GetRecoParam()->GetFirstBin())
1259 (*fDebugStreamer)<<"SignalB"<< // pads with signal
1260 "TimeStamp="<<fTimeStamp<<
1261 "EventType="<<fEventType<<
1282 // Central Electrode signal analysis
1284 Float_t ceQmax =0, ceQsum=0, ceTime=0;
1285 Float_t cemean = mean06, cerms=rms06 ;
1287 Float_t ceThreshold=5.*cerms;
1288 Float_t ceSumThreshold=8.*cerms;
1289 const Int_t kCemin=5; // range for the analysis of the ce signal +- channels from the peak
1290 const Int_t kCemax=5;
1291 for (Int_t i=nchannels-2; i>nchannels/2; i--){
1292 if ( (dsignal[i]-mean06)>ceThreshold && dsignal[i]>=dsignal[i+1] && dsignal[i]>=dsignal[i-1] ){
1300 for (Int_t i=cemaxpos-20; i<cemaxpos+5; i++){
1301 if (i<0 || i>nchannels-1) continue;
1302 Double_t val=dsignal[i]- cemean;
1308 cemaxpos = cemaxpos2;
1310 for (Int_t i=cemaxpos-kCemin; i<cemaxpos+kCemax; i++){
1311 if (i>0 && i<nchannels&&dsignal[i]- cemean>0){
1312 Double_t val=dsignal[i]- cemean;
1313 ceTime+=val*dtime[i];
1315 if (val>ceQmax) ceQmax=val;
1318 if (ceQmax&&ceQsum>ceSumThreshold) {
1320 (*fDebugStreamer)<<"Signalce"<<
1321 "TimeStamp="<<fTimeStamp<<
1322 "EventType="<<fEventType<<
1334 // end of ce signal analysis
1338 // Gating grid signal analysis
1340 Double_t ggQmax =0, ggQsum=0, ggTime=0;
1341 Double_t ggmean = mean06, ggrms=rms06 ;
1343 Double_t ggThreshold=5.*ggrms;
1344 Double_t ggSumThreshold=8.*ggrms;
1346 for (Int_t i=1; i<nchannels/4; i++){
1347 if ( (dsignal[i]-mean06)>ggThreshold && dsignal[i]>=dsignal[i+1] && dsignal[i]>=dsignal[i-1] &&
1348 (dsignal[i]+dsignal[i+1]+dsignal[i-1]-3*mean06)>ggSumThreshold){
1350 if (dsignal[i-1]>dsignal[i+1]) ggmaxpos=i-1;
1355 for (Int_t i=ggmaxpos-1; i<ggmaxpos+3; i++){
1356 if (i>0 && i<nchannels && dsignal[i]-ggmean>0){
1357 Double_t val=dsignal[i]- ggmean;
1358 ggTime+=val*dtime[i];
1360 if (val>ggQmax) ggQmax=val;
1363 if (ggQmax&&ggQsum>ggSumThreshold) {
1365 (*fDebugStreamer)<<"Signalgg"<<
1366 "TimeStamp="<<fTimeStamp<<
1367 "EventType="<<fEventType<<
1379 // end of gg signal analysis
1384 if (rms06>fRecoParam->GetMaxNoise()) {
1385 pedestalEvent+=1024.;
1386 return 1024+median; // sign noisy channel in debug mode
1393 void AliTPCclustererMI::DumpHistos(){
1395 // Dump histogram information
1397 if (!fAmplitudeHisto) return;
1398 AliTPCROC * roc = AliTPCROC::Instance();
1399 for (UInt_t isector=0; isector<AliTPCROC::Instance()->GetNSectors(); isector++){
1400 TObjArray * array = (TObjArray*)fAmplitudeHisto->UncheckedAt(isector);
1401 if (!array) continue;
1402 for (UInt_t ipad = 0; ipad <(UInt_t)array->GetEntriesFast(); ipad++){
1403 TH1F * histo = (TH1F*) array->UncheckedAt(ipad);
1404 if (!histo) continue;
1405 if (histo->GetEntries()<100) continue;
1406 histo->Fit("gaus","q");
1407 Float_t mean = histo->GetMean();
1408 Float_t rms = histo->GetRMS();
1409 Float_t gmean = histo->GetFunction("gaus")->GetParameter(1);
1410 Float_t gsigma = histo->GetFunction("gaus")->GetParameter(2);
1411 Float_t gmeanErr = histo->GetFunction("gaus")->GetParError(1);
1412 Float_t gsigmaErr = histo->GetFunction("gaus")->GetParError(2);
1413 Float_t max = histo->GetFunction("gaus")->GetParameter(0);
1416 UInt_t row=0, pad =0;
1417 const UInt_t *indexes =roc->GetRowIndexes(isector);
1418 for (UInt_t irow=0; irow<roc->GetNRows(isector); irow++){
1419 if (indexes[irow]<=ipad){
1421 pad = ipad-indexes[irow];
1424 Int_t rpad = pad - (AliTPCROC::Instance()->GetNPads(isector,row))/2;
1426 (*fDebugStreamer)<<"Fit"<<
1427 "TimeStamp="<<fTimeStamp<<
1428 "EventType="<<fEventType<<
1429 "Sector="<<isector<<
1438 "GMeanErr="<<gmeanErr<<
1439 "GSigmaErr="<<gsigmaErr<<
1441 if (array->UncheckedAt(ipad)) fDebugStreamer->StoreObject(array->UncheckedAt(ipad));
1448 Int_t AliTPCclustererMI::TransformFFT(Float_t *input, Float_t threshold, Bool_t locMax, Float_t *freq, Float_t *re, Float_t *im, Float_t *mag, Float_t *phi)
1451 // calculate fourrie transform
1452 // return only frequncies with mag over threshold
1453 // if locMax is spectified only freque with local maxima over theshold is returned
1455 if (! fFFTr2c) return kFALSE;
1456 if (!freq) return kFALSE;
1459 Int_t nPoints = fRecoParam->GetLastBin()-fRecoParam->GetFirstBin();
1460 Double_t *in = new Double_t[nPoints];
1461 Double_t *rfft = new Double_t[nPoints];
1462 Double_t *ifft = new Double_t[nPoints];
1463 for (Int_t i=0; i<nPoints; i++){in[i]=input[i];}
1464 fFFTr2c->SetPoints(in);
1465 fFFTr2c->Transform();
1466 fFFTr2c->GetPointsComplex(rfft, ifft);
1467 for (Int_t i=3; i<nPoints/2-3; i++){
1468 Float_t lmag = TMath::Sqrt(rfft[i]*rfft[i]+ifft[i]*ifft[i])/nPoints;
1469 if (lmag<threshold) continue;
1471 if ( TMath::Sqrt(rfft[i-1]*rfft[i-1]+ifft[i-1]*ifft[i-1])/nPoints>lmag) continue;
1472 if ( TMath::Sqrt(rfft[i+1]*rfft[i+1]+ifft[i+1]*ifft[i+1])/nPoints>lmag) continue;
1473 if ( TMath::Sqrt(rfft[i-2]*rfft[i-2]+ifft[i-2]*ifft[i-2])/nPoints>lmag) continue;
1474 if ( TMath::Sqrt(rfft[i+2]*rfft[i+2]+ifft[i+2]*ifft[i+2])/nPoints>lmag) continue;
1475 if ( TMath::Sqrt(rfft[i-3]*rfft[i-3]+ifft[i-3]*ifft[i-3])/nPoints>lmag) continue;
1476 if ( TMath::Sqrt(rfft[i+3]*rfft[i+3]+ifft[i+3]*ifft[i+3])/nPoints>lmag) continue;
1479 freq[current] = Float_t(i)/Float_t(nPoints);
1481 re[current] = rfft[i];
1482 im[current] = ifft[i];
1484 phi[current]=TMath::ATan2(ifft[i],rfft[i]);