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 **************************************************************************/
16 /* $Id: AliESDtrackCuts.cxx 24534 2008-03-16 22:22:11Z fca $ */
18 #include "AliESDtrackCuts.h"
20 #include <AliESDtrack.h>
21 #include <AliESDVertex.h>
22 #include <AliESDEvent.h>
27 #include <TDirectory.h>
29 //____________________________________________________________________
30 ClassImp(AliESDtrackCuts)
33 const Char_t* AliESDtrackCuts::fgkCutNames[kNCuts] = {
38 "#Chi^{2}/clusters TPC",
39 "#Chi^{2}/clusters ITS",
55 "trk-to-vtx dca absolute",
56 "trk-to-vtx dca xy absolute",
57 "trk-to-vtx dca z absolute",
58 "SPD cluster requirement",
59 "SDD cluster requirement",
60 "SSD cluster requirement"
63 //____________________________________________________________________
64 AliESDtrackCuts::AliESDtrackCuts(const Char_t* name, const Char_t* title) : AliAnalysisCuts(name,title),
65 fCutMinNClusterTPC(0),
66 fCutMinNClusterITS(0),
67 fCutMaxChi2PerClusterTPC(0),
68 fCutMaxChi2PerClusterITS(0),
74 fCutAcceptKinkDaughters(0),
75 fCutRequireTPCRefit(0),
76 fCutRequireITSRefit(0),
77 fCutNsigmaToVertex(0),
78 fCutSigmaToVertexRequired(0),
107 //##############################################################################
108 // setting default cuts
109 SetMinNClustersTPC();
110 SetMinNClustersITS();
111 SetMaxChi2PerClusterTPC();
112 SetMaxChi2PerClusterITS();
113 SetMaxCovDiagonalElements();
114 SetRequireTPCRefit();
115 SetRequireITSRefit();
116 SetAcceptKingDaughters();
117 SetMaxNsigmaToVertex();
118 SetRequireSigmaToVertex();
120 SetMaxDCAToVertexXY();
121 SetMaxDCAToVertexZ();
129 SetClusterRequirementITS(kSPD);
130 SetClusterRequirementITS(kSDD);
131 SetClusterRequirementITS(kSSD);
136 //_____________________________________________________________________________
137 AliESDtrackCuts::AliESDtrackCuts(const AliESDtrackCuts &c) : AliAnalysisCuts(c),
138 fCutMinNClusterTPC(0),
139 fCutMinNClusterITS(0),
140 fCutMaxChi2PerClusterTPC(0),
141 fCutMaxChi2PerClusterITS(0),
147 fCutAcceptKinkDaughters(0),
148 fCutRequireTPCRefit(0),
149 fCutRequireITSRefit(0),
150 fCutNsigmaToVertex(0),
151 fCutSigmaToVertexRequired(0),
153 fCutDCAToVertexXY(0),
178 ((AliESDtrackCuts &) c).Copy(*this);
181 AliESDtrackCuts::~AliESDtrackCuts()
187 for (Int_t i=0; i<2; i++) {
189 if (fhNClustersITS[i])
190 delete fhNClustersITS[i];
191 if (fhNClustersTPC[i])
192 delete fhNClustersTPC[i];
193 if (fhChi2PerClusterITS[i])
194 delete fhChi2PerClusterITS[i];
195 if (fhChi2PerClusterTPC[i])
196 delete fhChi2PerClusterTPC[i];
217 if (fhDXYNormalized[i])
218 delete fhDXYNormalized[i];
219 if (fhDZNormalized[i])
220 delete fhDZNormalized[i];
221 if (fhDXYvsDZNormalized[i])
222 delete fhDXYvsDZNormalized[i];
223 if (fhNSigmaToVertex[i])
224 delete fhNSigmaToVertex[i];
232 delete ffDTheoretical;
235 delete fhCutStatistics;
236 if (fhCutCorrelation)
237 delete fhCutCorrelation;
240 void AliESDtrackCuts::Init()
243 // sets everything to zero
246 fCutMinNClusterTPC = 0;
247 fCutMinNClusterITS = 0;
249 fCutMaxChi2PerClusterTPC = 0;
250 fCutMaxChi2PerClusterITS = 0;
252 for (Int_t i = 0; i < 3; i++)
253 fCutClusterRequirementITS[i] = kOff;
261 fCutAcceptKinkDaughters = 0;
262 fCutRequireTPCRefit = 0;
263 fCutRequireITSRefit = 0;
265 fCutNsigmaToVertex = 0;
266 fCutSigmaToVertexRequired = 0;
268 fCutDCAToVertexXY = 0;
269 fCutDCAToVertexZ = 0;
286 fHistogramsOn = kFALSE;
288 for (Int_t i=0; i<2; ++i)
290 fhNClustersITS[i] = 0;
291 fhNClustersTPC[i] = 0;
293 fhChi2PerClusterITS[i] = 0;
294 fhChi2PerClusterTPC[i] = 0;
307 fhDXYNormalized[i] = 0;
308 fhDZNormalized[i] = 0;
309 fhDXYvsDZNormalized[i] = 0;
310 fhNSigmaToVertex[i] = 0;
318 fhCutCorrelation = 0;
321 //_____________________________________________________________________________
322 AliESDtrackCuts &AliESDtrackCuts::operator=(const AliESDtrackCuts &c)
325 // Assignment operator
328 if (this != &c) ((AliESDtrackCuts &) c).Copy(*this);
332 //_____________________________________________________________________________
333 void AliESDtrackCuts::Copy(TObject &c) const
339 AliESDtrackCuts& target = (AliESDtrackCuts &) c;
343 target.fCutMinNClusterTPC = fCutMinNClusterTPC;
344 target.fCutMinNClusterITS = fCutMinNClusterITS;
346 target.fCutMaxChi2PerClusterTPC = fCutMaxChi2PerClusterTPC;
347 target.fCutMaxChi2PerClusterITS = fCutMaxChi2PerClusterITS;
349 for (Int_t i = 0; i < 3; i++)
350 target.fCutClusterRequirementITS[i] = fCutClusterRequirementITS[i];
352 target.fCutMaxC11 = fCutMaxC11;
353 target.fCutMaxC22 = fCutMaxC22;
354 target.fCutMaxC33 = fCutMaxC33;
355 target.fCutMaxC44 = fCutMaxC44;
356 target.fCutMaxC55 = fCutMaxC55;
358 target.fCutAcceptKinkDaughters = fCutAcceptKinkDaughters;
359 target.fCutRequireTPCRefit = fCutRequireTPCRefit;
360 target.fCutRequireITSRefit = fCutRequireITSRefit;
362 target.fCutNsigmaToVertex = fCutNsigmaToVertex;
363 target.fCutSigmaToVertexRequired = fCutSigmaToVertexRequired;
364 target.fCutDCAToVertex = fCutDCAToVertex;
365 target.fCutDCAToVertexXY = fCutDCAToVertexXY;
366 target.fCutDCAToVertexZ = fCutDCAToVertexZ;
368 target.fPMin = fPMin;
369 target.fPMax = fPMax;
370 target.fPtMin = fPtMin;
371 target.fPtMax = fPtMax;
372 target.fPxMin = fPxMin;
373 target.fPxMax = fPxMax;
374 target.fPyMin = fPyMin;
375 target.fPyMax = fPyMax;
376 target.fPzMin = fPzMin;
377 target.fPzMax = fPzMax;
378 target.fEtaMin = fEtaMin;
379 target.fEtaMax = fEtaMax;
380 target.fRapMin = fRapMin;
381 target.fRapMax = fRapMax;
383 target.fHistogramsOn = fHistogramsOn;
385 for (Int_t i=0; i<2; ++i)
387 if (fhNClustersITS[i]) target.fhNClustersITS[i] = (TH1F*) fhNClustersITS[i]->Clone();
388 if (fhNClustersTPC[i]) target.fhNClustersTPC[i] = (TH1F*) fhNClustersTPC[i]->Clone();
390 if (fhChi2PerClusterITS[i]) target.fhChi2PerClusterITS[i] = (TH1F*) fhChi2PerClusterITS[i]->Clone();
391 if (fhChi2PerClusterTPC[i]) target.fhChi2PerClusterTPC[i] = (TH1F*) fhChi2PerClusterTPC[i]->Clone();
393 if (fhC11[i]) target.fhC11[i] = (TH1F*) fhC11[i]->Clone();
394 if (fhC22[i]) target.fhC22[i] = (TH1F*) fhC22[i]->Clone();
395 if (fhC33[i]) target.fhC33[i] = (TH1F*) fhC33[i]->Clone();
396 if (fhC44[i]) target.fhC44[i] = (TH1F*) fhC44[i]->Clone();
397 if (fhC55[i]) target.fhC55[i] = (TH1F*) fhC55[i]->Clone();
399 if (fhDXY[i]) target.fhDXY[i] = (TH1F*) fhDXY[i]->Clone();
400 if (fhDZ[i]) target.fhDZ[i] = (TH1F*) fhDZ[i]->Clone();
401 if (fhDXYDZ[i]) target.fhDXYDZ[i] = (TH1F*) fhDXYDZ[i]->Clone();
402 if (fhDXYvsDZ[i]) target.fhDXYvsDZ[i] = (TH2F*) fhDXYvsDZ[i]->Clone();
404 if (fhDXYNormalized[i]) target.fhDXYNormalized[i] = (TH1F*) fhDXYNormalized[i]->Clone();
405 if (fhDZNormalized[i]) target.fhDZNormalized[i] = (TH1F*) fhDZNormalized[i]->Clone();
406 if (fhDXYvsDZNormalized[i]) target.fhDXYvsDZNormalized[i] = (TH2F*) fhDXYvsDZNormalized[i]->Clone();
407 if (fhNSigmaToVertex[i]) target.fhNSigmaToVertex[i] = (TH1F*) fhNSigmaToVertex[i]->Clone();
409 if (fhPt[i]) target.fhPt[i] = (TH1F*) fhPt[i]->Clone();
410 if (fhEta[i]) target.fhEta[i] = (TH1F*) fhEta[i]->Clone();
412 if (ffDTheoretical) target.ffDTheoretical = (TF1*) ffDTheoretical->Clone();
414 if (fhCutStatistics) target.fhCutStatistics = (TH1F*) fhCutStatistics->Clone();
415 if (fhCutCorrelation) target.fhCutCorrelation = (TH2F*) fhCutCorrelation->Clone();
420 //_____________________________________________________________________________
421 Long64_t AliESDtrackCuts::Merge(TCollection* list) {
422 // Merge a list of AliESDtrackCuts objects with this (needed for PROOF)
423 // Returns the number of merged objects (including this)
430 TIterator* iter = list->MakeIterator();
433 // collection of measured and generated histograms
435 while ((obj = iter->Next())) {
437 AliESDtrackCuts* entry = dynamic_cast<AliESDtrackCuts*>(obj);
441 if (!entry->fHistogramsOn)
444 for (Int_t i=0; i<2; i++) {
446 fhNClustersITS[i] ->Add(entry->fhNClustersITS[i] );
447 fhNClustersTPC[i] ->Add(entry->fhNClustersTPC[i] );
449 fhChi2PerClusterITS[i] ->Add(entry->fhChi2PerClusterITS[i]);
450 fhChi2PerClusterTPC[i] ->Add(entry->fhChi2PerClusterTPC[i]);
452 fhC11[i] ->Add(entry->fhC11[i] );
453 fhC22[i] ->Add(entry->fhC22[i] );
454 fhC33[i] ->Add(entry->fhC33[i] );
455 fhC44[i] ->Add(entry->fhC44[i] );
456 fhC55[i] ->Add(entry->fhC55[i] );
458 fhDXY[i] ->Add(entry->fhDXY[i] );
459 fhDZ[i] ->Add(entry->fhDZ[i] );
460 fhDXYDZ[i] ->Add(entry->fhDXYDZ[i] );
461 fhDXYvsDZ[i] ->Add(entry->fhDXYvsDZ[i] );
463 fhDXYNormalized[i] ->Add(entry->fhDXYNormalized[i] );
464 fhDZNormalized[i] ->Add(entry->fhDZNormalized[i] );
465 fhDXYvsDZNormalized[i] ->Add(entry->fhDXYvsDZNormalized[i]);
466 fhNSigmaToVertex[i] ->Add(entry->fhNSigmaToVertex[i]);
468 fhPt[i] ->Add(entry->fhPt[i]);
469 fhEta[i] ->Add(entry->fhEta[i]);
472 fhCutStatistics ->Add(entry->fhCutStatistics);
473 fhCutCorrelation ->Add(entry->fhCutCorrelation);
481 //____________________________________________________________________
482 Float_t AliESDtrackCuts::GetSigmaToVertex(AliESDtrack* esdTrack)
484 // Calculates the number of sigma to the vertex.
489 esdTrack->GetImpactParameters(b,bCov);
491 if (bCov[0]<=0 || bCov[2]<=0) {
492 AliDebugClass(1, "Estimated b resolution lower or equal zero!");
493 bCov[0]=0; bCov[2]=0;
495 bRes[0] = TMath::Sqrt(bCov[0]);
496 bRes[1] = TMath::Sqrt(bCov[2]);
498 // -----------------------------------
499 // How to get to a n-sigma cut?
501 // The accumulated statistics from 0 to d is
503 // -> Erf(d/Sqrt(2)) for a 1-dim gauss (d = n_sigma)
504 // -> 1 - Exp(-d**2) for a 2-dim gauss (d*d = dx*dx + dy*dy != n_sigma)
506 // It means that for a 2-dim gauss: n_sigma(d) = Sqrt(2)*ErfInv(1 - Exp((-x**2)/2)
507 // Can this be expressed in a different way?
509 if (bRes[0] == 0 || bRes[1] ==0)
512 Float_t d = TMath::Sqrt(TMath::Power(b[0]/bRes[0],2) + TMath::Power(b[1]/bRes[1],2));
514 // work around precision problem
515 // if d is too big, TMath::Exp(...) gets 0, and TMath::ErfInverse(1) that should be infinite, gets 0 :(
516 // 1e-15 corresponds to nsigma ~ 7.7
517 if (TMath::Exp(-d * d / 2) < 1e-15)
520 Float_t nSigma = TMath::ErfInverse(1 - TMath::Exp(-d * d / 2)) * TMath::Sqrt(2);
524 void AliESDtrackCuts::EnableNeededBranches(TTree* tree)
526 // enables the branches needed by AcceptTrack, for a list see comment of AcceptTrack
528 tree->SetBranchStatus("fTracks.fFlags", 1);
529 tree->SetBranchStatus("fTracks.fITSncls", 1);
530 tree->SetBranchStatus("fTracks.fTPCncls", 1);
531 tree->SetBranchStatus("fTracks.fITSchi2", 1);
532 tree->SetBranchStatus("fTracks.fTPCchi2", 1);
533 tree->SetBranchStatus("fTracks.fC*", 1);
534 tree->SetBranchStatus("fTracks.fD", 1);
535 tree->SetBranchStatus("fTracks.fZ", 1);
536 tree->SetBranchStatus("fTracks.fCdd", 1);
537 tree->SetBranchStatus("fTracks.fCdz", 1);
538 tree->SetBranchStatus("fTracks.fCzz", 1);
539 tree->SetBranchStatus("fTracks.fP*", 1);
540 tree->SetBranchStatus("fTracks.fR*", 1);
541 tree->SetBranchStatus("fTracks.fKinkIndexes*", 1);
544 //____________________________________________________________________
546 AliESDtrackCuts::AcceptTrack(AliESDtrack* esdTrack) {
548 // figure out if the tracks survives all the track cuts defined
550 // the different quality parameter and kinematic values are first
551 // retrieved from the track. then it is found out what cuts the
552 // track did not survive and finally the cuts are imposed.
554 // this function needs the following branches:
560 // fTracks.fC //GetExternalCovariance
561 // fTracks.fD //GetImpactParameters
562 // fTracks.fZ //GetImpactParameters
563 // fTracks.fCdd //GetImpactParameters
564 // fTracks.fCdz //GetImpactParameters
565 // fTracks.fCzz //GetImpactParameters
566 // fTracks.fP //GetPxPyPz
567 // fTracks.fR //GetMass
568 // fTracks.fP //GetMass
569 // fTracks.fKinkIndexes
572 UInt_t status = esdTrack->GetStatus();
574 // getting quality parameters from the ESD track
575 Int_t nClustersITS = esdTrack->GetITSclusters(0);
576 Int_t nClustersTPC = esdTrack->GetTPCclusters(0);
578 Float_t chi2PerClusterITS = -1;
579 Float_t chi2PerClusterTPC = -1;
581 chi2PerClusterITS = esdTrack->GetITSchi2()/Float_t(nClustersITS);
583 chi2PerClusterTPC = esdTrack->GetTPCchi2()/Float_t(nClustersTPC);
585 esdTrack->GetExternalCovariance(extCov);
587 // getting the track to vertex parameters
588 Float_t nSigmaToVertex = GetSigmaToVertex(esdTrack);
592 esdTrack->GetImpactParameters(b,bCov);
593 if (bCov[0]<=0 || bCov[2]<=0) {
594 AliDebug(1, "Estimated b resolution lower or equal zero!");
595 bCov[0]=0; bCov[2]=0;
598 Float_t dcaToVertexXY = b[0];
599 Float_t dcaToVertexZ = b[1];
601 Float_t dcaToVertex = TMath::Sqrt(dcaToVertexXY*dcaToVertexXY + dcaToVertexZ*dcaToVertexZ);
603 // getting the kinematic variables of the track
604 // (assuming the mass is known)
606 esdTrack->GetPxPyPz(p);
608 Float_t momentum = TMath::Sqrt(TMath::Power(p[0],2) + TMath::Power(p[1],2) + TMath::Power(p[2],2));
609 Float_t pt = TMath::Sqrt(TMath::Power(p[0],2) + TMath::Power(p[1],2));
610 Float_t energy = TMath::Sqrt(TMath::Power(esdTrack->GetMass(),2) + TMath::Power(momentum,2));
613 //y-eta related calculations
616 if((momentum != TMath::Abs(p[2]))&&(momentum != 0))
617 eta = 0.5*TMath::Log((momentum + p[2])/(momentum - p[2]));
618 if((energy != TMath::Abs(p[2]))&&(momentum != 0))
619 y = 0.5*TMath::Log((energy + p[2])/(energy - p[2]));
622 //########################################################################
626 for (Int_t i=0; i<kNCuts; i++) cuts[i]=kFALSE;
628 // track quality cuts
629 if (fCutRequireTPCRefit && (status&AliESDtrack::kTPCrefit)==0)
631 if (fCutRequireITSRefit && (status&AliESDtrack::kITSrefit)==0)
633 if (nClustersTPC<fCutMinNClusterTPC)
635 if (nClustersITS<fCutMinNClusterITS)
637 if (chi2PerClusterTPC>fCutMaxChi2PerClusterTPC)
639 if (chi2PerClusterITS>fCutMaxChi2PerClusterITS)
641 if (extCov[0] > fCutMaxC11)
643 if (extCov[2] > fCutMaxC22)
645 if (extCov[5] > fCutMaxC33)
647 if (extCov[9] > fCutMaxC44)
649 if (extCov[14] > fCutMaxC55)
651 if (nSigmaToVertex > fCutNsigmaToVertex && fCutSigmaToVertexRequired)
653 // if n sigma could not be calculated
654 if (nSigmaToVertex<0 && fCutSigmaToVertexRequired)
656 if (!fCutAcceptKinkDaughters && esdTrack->GetKinkIndex(0)>0)
658 // track kinematics cut
659 if((momentum < fPMin) || (momentum > fPMax))
661 if((pt < fPtMin) || (pt > fPtMax))
663 if((p[0] < fPxMin) || (p[0] > fPxMax))
665 if((p[1] < fPyMin) || (p[1] > fPyMax))
667 if((p[2] < fPzMin) || (p[2] > fPzMax))
669 if((eta < fEtaMin) || (eta > fEtaMax))
671 if((y < fRapMin) || (y > fRapMax))
673 if (dcaToVertex > fCutDCAToVertex)
675 if (TMath::Abs(dcaToVertexXY) > fCutDCAToVertexXY)
677 if (TMath::Abs(dcaToVertexZ) > fCutDCAToVertexZ)
680 for (Int_t i = 0; i < 3; i++)
681 cuts[24+i] = !CheckITSClusterRequirement(fCutClusterRequirementITS[i], esdTrack->HasPointOnITSLayer(i*2), esdTrack->HasPointOnITSLayer(i*2+1));
684 for (Int_t i=0; i<kNCuts; i++)
685 if (cuts[i]) cut = kTRUE;
689 //########################################################################
690 // filling histograms
692 fhCutStatistics->Fill(fhCutStatistics->GetBinCenter(fhCutStatistics->GetXaxis()->FindBin("n tracks")));
694 fhCutStatistics->Fill(fhCutStatistics->GetBinCenter(fhCutStatistics->GetXaxis()->FindBin("n cut tracks")));
696 for (Int_t i=0; i<kNCuts; i++) {
698 fhCutStatistics->Fill(fhCutStatistics->GetBinCenter(fhCutStatistics->GetXaxis()->FindBin(fgkCutNames[i])));
700 for (Int_t j=i; j<kNCuts; j++) {
701 if (cuts[i] && cuts[j]) {
702 Float_t xC = fhCutCorrelation->GetXaxis()->GetBinCenter(fhCutCorrelation->GetXaxis()->FindBin(fgkCutNames[i]));
703 Float_t yC = fhCutCorrelation->GetYaxis()->GetBinCenter(fhCutCorrelation->GetYaxis()->FindBin(fgkCutNames[j]));
704 fhCutCorrelation->Fill(xC, yC);
710 // now we loop over the filling of the histograms twice: once "before" the cut, once "after"
711 // the code is not in a function due to too many local variables that would need to be passed
713 for (Int_t id = 0; id < 2; id++)
715 // id = 0 --> before cut
716 // id = 1 --> after cut
720 fhNClustersITS[id]->Fill(nClustersITS);
721 fhNClustersTPC[id]->Fill(nClustersTPC);
722 fhChi2PerClusterITS[id]->Fill(chi2PerClusterITS);
723 fhChi2PerClusterTPC[id]->Fill(chi2PerClusterTPC);
725 fhC11[id]->Fill(extCov[0]);
726 fhC22[id]->Fill(extCov[2]);
727 fhC33[id]->Fill(extCov[5]);
728 fhC44[id]->Fill(extCov[9]);
729 fhC55[id]->Fill(extCov[14]);
732 fhEta[id]->Fill(eta);
735 bRes[0] = TMath::Sqrt(bCov[0]);
736 bRes[1] = TMath::Sqrt(bCov[2]);
738 fhDZ[id]->Fill(b[1]);
739 fhDXY[id]->Fill(b[0]);
740 fhDXYDZ[id]->Fill(dcaToVertex);
741 fhDXYvsDZ[id]->Fill(b[1],b[0]);
743 if (bRes[0]!=0 && bRes[1]!=0) {
744 fhDZNormalized[id]->Fill(b[1]/bRes[1]);
745 fhDXYNormalized[id]->Fill(b[0]/bRes[0]);
746 fhDXYvsDZNormalized[id]->Fill(b[1]/bRes[1], b[0]/bRes[0]);
747 fhNSigmaToVertex[id]->Fill(nSigmaToVertex);
759 //____________________________________________________________________
760 Bool_t AliESDtrackCuts::CheckITSClusterRequirement(ITSClusterRequirement req, Bool_t clusterL1, Bool_t clusterL2)
762 // checks if the cluster requirement is fullfilled (in this case: return kTRUE)
766 case kOff: return kTRUE;
767 case kNone: return !clusterL1 && !clusterL2;
768 case kAny: return clusterL1 || clusterL2;
769 case kFirst: return clusterL1;
770 case kOnlyFirst: return clusterL1 && !clusterL2;
771 case kSecond: return clusterL2;
772 case kOnlySecond: return clusterL2 && !clusterL1;
773 case kBoth: return clusterL1 && clusterL2;
779 //____________________________________________________________________
780 AliESDtrack* AliESDtrackCuts::GetTPCOnlyTrack(AliESDEvent* esd, Int_t iTrack)
782 // creates a TPC only track from the given esd track
783 // the track has to be deleted by the user
785 // NB. most of the functionality to get a TPC only track from an ESD track is in AliESDtrack, where it should be
786 // there are only missing propagations here that are needed for old data
787 // this function will therefore become obsolete
789 // adapted from code provided by CKB
791 if (!esd->GetPrimaryVertexTPC())
792 return 0; // No TPC vertex no TPC tracks
794 if(!esd->GetPrimaryVertexTPC()->GetStatus())
795 return 0; // TPC Vertex is created by default in AliESDEvent, do not use in this case
797 AliESDtrack* track = esd->GetTrack(iTrack);
801 AliESDtrack *tpcTrack = new AliESDtrack();
803 // This should have been done during the reconstruction
804 // fixed by Juri in r26675
805 // but recalculate for older data CKB
807 track->GetImpactParametersTPC(p,cov);
809 track->RelateToVertexTPC(esd->GetPrimaryVertexTPC(),esd->GetMagneticField(),kVeryBig);
812 // only true if we have a tpc track
813 if (!track->FillTPCOnlyTrack(*tpcTrack))
819 // propagate to Vertex
820 // not needed for normal reconstructed ESDs...
821 // Double_t pTPC[2],covTPC[3];
822 // tpcTrack->PropagateToDCA(esd->GetPrimaryVertexTPC(), esd->GetMagneticField(), 10000, pTPC, covTPC);
827 //____________________________________________________________________
828 TObjArray* AliESDtrackCuts::GetAcceptedTracks(AliESDEvent* esd,Bool_t bTPC)
831 // returns an array of all tracks that pass the cuts
832 // or an array of TPC only tracks (propagated to the TPC vertex during reco)
833 // tracks that pass the cut
835 TObjArray* acceptedTracks = new TObjArray();
837 // loop over esd tracks
838 for (Int_t iTrack = 0; iTrack < esd->GetNumberOfTracks(); iTrack++) {
840 if(!esd->GetPrimaryVertexTPC())return acceptedTracks; // No TPC vertex no TPC tracks
841 if(!esd->GetPrimaryVertexTPC()->GetStatus())return acceptedTracks; // No proper TPC vertex, only the default
843 AliESDtrack *tpcTrack = GetTPCOnlyTrack(esd, iTrack);
847 if (AcceptTrack(tpcTrack)) {
848 acceptedTracks->Add(tpcTrack);
855 AliESDtrack* track = esd->GetTrack(iTrack);
856 if(AcceptTrack(track))
857 acceptedTracks->Add(track);
860 if(bTPC)acceptedTracks->SetOwner(kTRUE);
861 return acceptedTracks;
864 //____________________________________________________________________
865 Int_t AliESDtrackCuts::CountAcceptedTracks(AliESDEvent* esd)
868 // returns an the number of tracks that pass the cuts
873 // loop over esd tracks
874 for (Int_t iTrack = 0; iTrack < esd->GetNumberOfTracks(); iTrack++) {
875 AliESDtrack* track = esd->GetTrack(iTrack);
876 if (AcceptTrack(track))
883 //____________________________________________________________________
884 void AliESDtrackCuts::DefineHistograms(Int_t color) {
886 // diagnostics histograms are defined
891 Bool_t oldStatus = TH1::AddDirectoryStatus();
892 TH1::AddDirectory(kFALSE);
894 //###################################################################################
895 // defining histograms
897 fhCutStatistics = new TH1F("cut_statistics","cut statistics",kNCuts+4,-0.5,kNCuts+3.5);
899 fhCutStatistics->GetXaxis()->SetBinLabel(1,"n tracks");
900 fhCutStatistics->GetXaxis()->SetBinLabel(2,"n cut tracks");
902 fhCutCorrelation = new TH2F("cut_correlation","cut correlation",kNCuts,-0.5,kNCuts-0.5,kNCuts,-0.5,kNCuts-0.5);;
904 for (Int_t i=0; i<kNCuts; i++) {
905 fhCutStatistics->GetXaxis()->SetBinLabel(i+4,fgkCutNames[i]);
906 fhCutCorrelation->GetXaxis()->SetBinLabel(i+1,fgkCutNames[i]);
907 fhCutCorrelation->GetYaxis()->SetBinLabel(i+1,fgkCutNames[i]);
910 fhCutStatistics ->SetLineColor(color);
911 fhCutCorrelation ->SetLineColor(color);
912 fhCutStatistics ->SetLineWidth(2);
913 fhCutCorrelation ->SetLineWidth(2);
915 for (Int_t i=0; i<2; i++) {
916 fhNClustersITS[i] = new TH1F("nClustersITS" ,"",8,-0.5,7.5);
917 fhNClustersTPC[i] = new TH1F("nClustersTPC" ,"",165,-0.5,164.5);
918 fhChi2PerClusterITS[i] = new TH1F("chi2PerClusterITS","",500,0,10);
919 fhChi2PerClusterTPC[i] = new TH1F("chi2PerClusterTPC","",500,0,10);
921 fhC11[i] = new TH1F("covMatrixDiagonal11","",2000,0,20);
922 fhC22[i] = new TH1F("covMatrixDiagonal22","",2000,0,20);
923 fhC33[i] = new TH1F("covMatrixDiagonal33","",1000,0,0.1);
924 fhC44[i] = new TH1F("covMatrixDiagonal44","",1000,0,0.1);
925 fhC55[i] = new TH1F("covMatrixDiagonal55","",1000,0,5);
927 fhDXY[i] = new TH1F("dXY" ,"",500,-10,10);
928 fhDZ[i] = new TH1F("dZ" ,"",500,-10,10);
929 fhDXYDZ[i] = new TH1F("dXYDZ" ,"",500,0,10);
930 fhDXYvsDZ[i] = new TH2F("dXYvsDZ","",200,-10,10,200,-10,10);
932 fhDXYNormalized[i] = new TH1F("dXYNormalized" ,"",500,-10,10);
933 fhDZNormalized[i] = new TH1F("dZNormalized" ,"",500,-10,10);
934 fhDXYvsDZNormalized[i] = new TH2F("dXYvsDZNormalized","",200,-10,10,200,-10,10);
936 fhNSigmaToVertex[i] = new TH1F("nSigmaToVertex","",500,0,10);
938 fhPt[i] = new TH1F("pt" ,"p_{T} distribution;p_{T} (GeV/c)",500,0.0,100.0);
939 fhEta[i] = new TH1F("eta" ,"#eta distribution;#eta",40,-2.0,2.0);
941 fhNClustersITS[i]->SetTitle("n ITS clusters");
942 fhNClustersTPC[i]->SetTitle("n TPC clusters");
943 fhChi2PerClusterITS[i]->SetTitle("#Chi^{2} per ITS cluster");
944 fhChi2PerClusterTPC[i]->SetTitle("#Chi^{2} per TPC cluster");
946 fhC11[i]->SetTitle("cov 11 : #sigma_{y}^{2} [cm^{2}]");
947 fhC22[i]->SetTitle("cov 22 : #sigma_{z}^{2} [cm^{2}]");
948 fhC33[i]->SetTitle("cov 33 : #sigma_{sin(#phi)}^{2}");
949 fhC44[i]->SetTitle("cov 44 : #sigma_{tan(#theta_{dip})}^{2}");
950 fhC55[i]->SetTitle("cov 55 : #sigma_{1/p_{T}}^{2} [(c/GeV)^2]");
952 fhDXY[i]->SetTitle("transverse impact parameter");
953 fhDZ[i]->SetTitle("longitudinal impact parameter");
954 fhDXYDZ[i]->SetTitle("absolute impact parameter;sqrt(dXY**2 + dZ**2) in cm");
955 fhDXYvsDZ[i]->SetXTitle("longitudinal impact parameter");
956 fhDXYvsDZ[i]->SetYTitle("transverse impact parameter");
958 fhDXYNormalized[i]->SetTitle("normalized trans impact par");
959 fhDZNormalized[i]->SetTitle("normalized long impact par");
960 fhDXYvsDZNormalized[i]->SetTitle("normalized long impact par");
961 fhDXYvsDZNormalized[i]->SetYTitle("normalized trans impact par");
962 fhNSigmaToVertex[i]->SetTitle("n #sigma to vertex");
964 fhNClustersITS[i]->SetLineColor(color); fhNClustersITS[i]->SetLineWidth(2);
965 fhNClustersTPC[i]->SetLineColor(color); fhNClustersTPC[i]->SetLineWidth(2);
966 fhChi2PerClusterITS[i]->SetLineColor(color); fhChi2PerClusterITS[i]->SetLineWidth(2);
967 fhChi2PerClusterTPC[i]->SetLineColor(color); fhChi2PerClusterTPC[i]->SetLineWidth(2);
969 fhC11[i]->SetLineColor(color); fhC11[i]->SetLineWidth(2);
970 fhC22[i]->SetLineColor(color); fhC22[i]->SetLineWidth(2);
971 fhC33[i]->SetLineColor(color); fhC33[i]->SetLineWidth(2);
972 fhC44[i]->SetLineColor(color); fhC44[i]->SetLineWidth(2);
973 fhC55[i]->SetLineColor(color); fhC55[i]->SetLineWidth(2);
975 fhDXY[i]->SetLineColor(color); fhDXY[i]->SetLineWidth(2);
976 fhDZ[i]->SetLineColor(color); fhDZ[i]->SetLineWidth(2);
977 fhDXYDZ[i]->SetLineColor(color); fhDXYDZ[i]->SetLineWidth(2);
979 fhDXYNormalized[i]->SetLineColor(color); fhDXYNormalized[i]->SetLineWidth(2);
980 fhDZNormalized[i]->SetLineColor(color); fhDZNormalized[i]->SetLineWidth(2);
981 fhNSigmaToVertex[i]->SetLineColor(color); fhNSigmaToVertex[i]->SetLineWidth(2);
984 // The number of sigmas to the vertex is per definition gaussian
985 ffDTheoretical = new TF1("nSigmaToVertexTheoretical","([0]/2.506628274)*exp(-(x**2)/2)",0,50);
986 ffDTheoretical->SetParameter(0,1);
988 TH1::AddDirectory(oldStatus);
991 //____________________________________________________________________
992 Bool_t AliESDtrackCuts::LoadHistograms(const Char_t* dir)
995 // loads the histograms from a file
996 // if dir is empty a directory with the name of this object is taken (like in SaveHistogram)
1002 if (!gDirectory->cd(dir))
1005 ffDTheoretical = dynamic_cast<TF1*> (gDirectory->Get("nSigmaToVertexTheory"));
1007 fhCutStatistics = dynamic_cast<TH1F*> (gDirectory->Get("cut_statistics"));
1008 fhCutCorrelation = dynamic_cast<TH2F*> (gDirectory->Get("cut_correlation"));
1010 for (Int_t i=0; i<2; i++) {
1013 gDirectory->cd("before_cuts");
1016 gDirectory->cd("after_cuts");
1018 fhNClustersITS[i] = dynamic_cast<TH1F*> (gDirectory->Get("nClustersITS" ));
1019 fhNClustersTPC[i] = dynamic_cast<TH1F*> (gDirectory->Get("nClustersTPC" ));
1020 fhChi2PerClusterITS[i] = dynamic_cast<TH1F*> (gDirectory->Get("chi2PerClusterITS"));
1021 fhChi2PerClusterTPC[i] = dynamic_cast<TH1F*> (gDirectory->Get("chi2PerClusterTPC"));
1023 fhC11[i] = dynamic_cast<TH1F*> (gDirectory->Get("covMatrixDiagonal11"));
1024 fhC22[i] = dynamic_cast<TH1F*> (gDirectory->Get("covMatrixDiagonal22"));
1025 fhC33[i] = dynamic_cast<TH1F*> (gDirectory->Get("covMatrixDiagonal33"));
1026 fhC44[i] = dynamic_cast<TH1F*> (gDirectory->Get("covMatrixDiagonal44"));
1027 fhC55[i] = dynamic_cast<TH1F*> (gDirectory->Get("covMatrixDiagonal55"));
1029 fhDXY[i] = dynamic_cast<TH1F*> (gDirectory->Get("dXY" ));
1030 fhDZ[i] = dynamic_cast<TH1F*> (gDirectory->Get("dZ" ));
1031 fhDXYDZ[i] = dynamic_cast<TH1F*> (gDirectory->Get("dXYDZ"));
1032 fhDXYvsDZ[i] = dynamic_cast<TH2F*> (gDirectory->Get("dXYvsDZ"));
1034 fhDXYNormalized[i] = dynamic_cast<TH1F*> (gDirectory->Get("dXYNormalized" ));
1035 fhDZNormalized[i] = dynamic_cast<TH1F*> (gDirectory->Get("dZNormalized" ));
1036 fhDXYvsDZNormalized[i] = dynamic_cast<TH2F*> (gDirectory->Get("dXYvsDZNormalized"));
1037 fhNSigmaToVertex[i] = dynamic_cast<TH1F*> (gDirectory->Get("nSigmaToVertex"));
1039 fhPt[i] = dynamic_cast<TH1F*> (gDirectory->Get("pt"));
1040 fhEta[i] = dynamic_cast<TH1F*> (gDirectory->Get("eta"));
1042 gDirectory->cd("../");
1045 gDirectory->cd("..");
1050 //____________________________________________________________________
1051 void AliESDtrackCuts::SaveHistograms(const Char_t* dir) {
1053 // saves the histograms in a directory (dir)
1056 if (!fHistogramsOn) {
1057 AliDebug(0, "Histograms not on - cannot save histograms!!!");
1064 gDirectory->mkdir(dir);
1065 gDirectory->cd(dir);
1067 gDirectory->mkdir("before_cuts");
1068 gDirectory->mkdir("after_cuts");
1070 // a factor of 2 is needed since n sigma is positive
1071 ffDTheoretical->SetParameter(0,2*fhNSigmaToVertex[0]->Integral("width"));
1072 ffDTheoretical->Write("nSigmaToVertexTheory");
1074 fhCutStatistics->Write();
1075 fhCutCorrelation->Write();
1077 for (Int_t i=0; i<2; i++) {
1079 gDirectory->cd("before_cuts");
1081 gDirectory->cd("after_cuts");
1083 fhNClustersITS[i] ->Write();
1084 fhNClustersTPC[i] ->Write();
1085 fhChi2PerClusterITS[i] ->Write();
1086 fhChi2PerClusterTPC[i] ->Write();
1096 fhDXYDZ[i] ->Write();
1097 fhDXYvsDZ[i] ->Write();
1099 fhDXYNormalized[i] ->Write();
1100 fhDZNormalized[i] ->Write();
1101 fhDXYvsDZNormalized[i] ->Write();
1102 fhNSigmaToVertex[i] ->Write();
1107 gDirectory->cd("../");
1110 gDirectory->cd("../");
1113 //____________________________________________________________________
1114 void AliESDtrackCuts::DrawHistograms()
1116 // draws some histograms
1118 TCanvas* canvas1 = new TCanvas(Form("%s_1", GetName()), "Track Quality Results1", 800, 800);
1119 canvas1->Divide(2, 2);
1122 fhNClustersTPC[0]->SetStats(kFALSE);
1123 fhNClustersTPC[0]->Draw();
1126 fhChi2PerClusterTPC[0]->SetStats(kFALSE);
1127 fhChi2PerClusterTPC[0]->Draw();
1130 fhNSigmaToVertex[0]->SetStats(kFALSE);
1131 fhNSigmaToVertex[0]->GetXaxis()->SetRangeUser(0, 10);
1132 fhNSigmaToVertex[0]->Draw();
1134 canvas1->SaveAs(Form("%s_%s.gif", GetName(), canvas1->GetName()));
1136 TCanvas* canvas2 = new TCanvas(Form("%s_2", GetName()), "Track Quality Results2", 1200, 800);
1137 canvas2->Divide(3, 2);
1140 fhC11[0]->SetStats(kFALSE);
1145 fhC22[0]->SetStats(kFALSE);
1150 fhC33[0]->SetStats(kFALSE);
1155 fhC44[0]->SetStats(kFALSE);
1160 fhC55[0]->SetStats(kFALSE);
1164 canvas2->SaveAs(Form("%s_%s.gif", GetName(), canvas2->GetName()));
1166 TCanvas* canvas3 = new TCanvas(Form("%s_3", GetName()), "Track Quality Results3", 1200, 800);
1167 canvas3->Divide(3, 2);
1170 fhDXY[0]->SetStats(kFALSE);
1175 fhDZ[0]->SetStats(kFALSE);
1180 fhDXYvsDZ[0]->SetStats(kFALSE);
1182 gPad->SetRightMargin(0.15);
1183 fhDXYvsDZ[0]->Draw("COLZ");
1186 fhDXYNormalized[0]->SetStats(kFALSE);
1188 fhDXYNormalized[0]->Draw();
1191 fhDZNormalized[0]->SetStats(kFALSE);
1193 fhDZNormalized[0]->Draw();
1196 fhDXYvsDZNormalized[0]->SetStats(kFALSE);
1198 gPad->SetRightMargin(0.15);
1199 fhDXYvsDZNormalized[0]->Draw("COLZ");
1201 canvas3->SaveAs(Form("%s_%s.gif", GetName(), canvas3->GetName()));
1203 TCanvas* canvas4 = new TCanvas(Form("%s_4", GetName()), "Track Quality Results4", 800, 500);
1204 canvas4->Divide(2, 1);
1207 fhCutStatistics->SetStats(kFALSE);
1208 fhCutStatistics->LabelsOption("v");
1209 gPad->SetBottomMargin(0.3);
1210 fhCutStatistics->Draw();
1213 fhCutCorrelation->SetStats(kFALSE);
1214 fhCutCorrelation->LabelsOption("v");
1215 gPad->SetBottomMargin(0.3);
1216 gPad->SetLeftMargin(0.3);
1217 fhCutCorrelation->Draw("COLZ");
1219 canvas4->SaveAs(Form("%s_%s.gif", GetName(), canvas4->GetName()));
1222 fhDXYvsDZNormalized[0]->SetStats(kFALSE);
1223 fhDXYvsDZNormalized[0]->DrawCopy("COLZ");
1226 fhNClustersTPC[0]->SetStats(kFALSE);
1227 fhNClustersTPC[0]->DrawCopy();
1230 fhChi2PerClusterITS[0]->SetStats(kFALSE);
1231 fhChi2PerClusterITS[0]->DrawCopy();
1232 fhChi2PerClusterITS[1]->SetLineColor(2);
1233 fhChi2PerClusterITS[1]->DrawCopy("SAME");
1236 fhChi2PerClusterTPC[0]->SetStats(kFALSE);
1237 fhChi2PerClusterTPC[0]->DrawCopy();
1238 fhChi2PerClusterTPC[1]->SetLineColor(2);
1239 fhChi2PerClusterTPC[1]->DrawCopy("SAME");*/
1242 Float_t AliESDtrackCuts::GetMinNsigmaToVertex() const
1244 // deprecated, please use GetMaxNsigmaToVertex
1246 Printf("WARNING: AliESDtrackCuts::GetMinNsigmaToVertex is DEPRECATED and will be removed in the next release. Please use GetMaxNsigmaToVertex instead. Renaming was done to improve code readability.");
1248 return GetMaxNsigmaToVertex();
1251 void AliESDtrackCuts::SetMinNsigmaToVertex(Float_t sigma)
1253 // deprecated, will be removed in next release
1255 Printf("WARNING: AliESDtrackCuts::SetMinNsigmaToVertex is DEPRECATED and will be removed in the next release. Please use SetMaxNsigmaToVertex instead. Renaming was done to improve code readability.");
1257 SetMaxNsigmaToVertex(sigma);
1260 void AliESDtrackCuts::SetDCAToVertex(Float_t dist)
1262 // deprecated, will be removed in next release
1264 Printf("WARNING: AliESDtrackCuts::SetDCAToVertex is DEPRECATED and will be removed in the next release. Please use SetMaxDCAToVertex instead. Renaming was done to improve code readability.");
1266 SetMaxDCAToVertex(dist);
1269 void AliESDtrackCuts::SetDCAToVertexXY(Float_t dist)
1271 // deprecated, will be removed in next release
1273 Printf("WARNING: AliESDtrackCuts::SetDCAToVertexXY is DEPRECATED and will be removed in the next release. Please use SetMaxDCAToVertexXY instead. Renaming was done to improve code readability.");
1275 SetMaxDCAToVertexXY(dist);
1278 void AliESDtrackCuts::SetDCAToVertexZ(Float_t dist)
1280 // deprecated, will be removed in next release
1282 Printf("WARNING: AliESDtrackCuts::SetDCAToVertexZ is DEPRECATED and will be removed in the next release. Please use SetMaxDCAToVertexZ instead. Renaming was done to improve code readability.");
1284 SetMaxDCAToVertexZ(dist);