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 **************************************************************************/
17 // Several studies done on clean samples of electrons, pions and kaons
19 // Compatible with both ESDs and AODs
22 // Matus Kalisky <matus.kalisky@cern.ch>
23 // Markus Heide <mheide@uni-muenster.de>
24 // Markus Fasel <M.Fasel@gsi.de>
29 #include <TObjArray.h>
32 #include <TMultiLayerPerceptron.h>
35 #include "AliAODMCParticle.h"
36 #include "AliAODEvent.h"
37 #include "AliAODTrack.h"
38 #include "AliESDtrack.h"
39 #include "AliESDEvent.h"
40 #include "AliMCEvent.h"
41 #include "AliMCParticle.h"
43 #include "AliESDpid.h"
44 #include "AliVParticle.h"
47 #include "AliHFEcollection.h"
48 #include "AliHFEpidQA.h"
49 #include "AliHFEV0info.h"
50 #include "AliHFEV0pid.h"
51 #include "AliHFEV0pidMC.h"
52 #include "AliHFEtrdPIDqa.h"
57 //__________________________________________
58 AliHFEpidQA::AliHFEpidQA():
69 // Default constructor
71 for(Int_t mom = 0; mom < 11; mom++){
76 //__________________________________________
77 AliHFEpidQA::AliHFEpidQA(const AliHFEpidQA &ref):
91 for(Int_t mom = 0; mom < 11; mom++){
97 //__________________________________________
98 AliHFEpidQA &AliHFEpidQA::operator=(const AliHFEpidQA &ref){
100 // Assignment operator
107 //__________________________________________
108 AliHFEpidQA::~AliHFEpidQA(){
112 if(fV0pid) delete fV0pid;
113 if(fV0pidMC) delete fV0pidMC;
114 if(fTRDpidQA) delete fTRDpidQA;
115 if(fOutput) delete fOutput;
116 // if(fTRDpidResponse) delete fTRDpidResponse;
119 //__________________________________________
120 void AliHFEpidQA::Copy(TObject &o) const {
127 AliHFEpidQA &target = dynamic_cast<AliHFEpidQA &>(o);
130 if(target.fESDpid) delete target.fESDpid;
131 target.fESDpid = new AliESDpid;
132 if(target.fV0pid) delete target.fV0pid;
134 target.fV0pid = dynamic_cast<AliHFEV0pid *>(fV0pid->Clone());
136 target.fV0pid = NULL;
137 if(target.fV0pidMC) delete target.fV0pidMC;
139 target.fV0pidMC = dynamic_cast<AliHFEV0pidMC *>(fV0pidMC->Clone());
141 target.fV0pidMC = NULL;
142 if(target.fTRDpidQA) delete target.fTRDpidQA;
144 target.fTRDpidQA = dynamic_cast<AliHFEtrdPIDqa *>(fTRDpidQA->Clone());
146 target.fTRDpidQA = NULL;
147 if(target.fOutput) delete target.fOutput;
149 target.fOutput = dynamic_cast<AliHFEcollection *>(fOutput->Clone());
152 //__________________________________________
153 void AliHFEpidQA::Init(){
155 // Prepare task output
159 for(Int_t mom = 0; mom < 11; mom++){ // load networks
160 fNet[mom] = (TMultiLayerPerceptron*) fNNref->Get(Form("NN_Mom%d", mom));
162 AliError(Form("No reference network for momentum bin %d!", mom));
167 fV0pid = new AliHFEV0pid;
168 if(HasV0pidQA()) fV0pid->InitQA();
169 fV0pidMC = new AliHFEV0pidMC();
172 fTRDpidQA = new AliHFEtrdPIDqa;
175 fOutput = new AliHFEcollection("pidQA", "PID QA output");
177 const char *name[4] = {"Electron", "PionK0", "PionL", "Proton"};
178 const char *title[4] = {"Electron", "K0 Pion", "Lambda Pion", "Proton"};
179 const char *det[4] = {"ITS", "TPC", "TRD", "TOF"};
180 for(Int_t i = 0; i < 4; i++){
181 fOutput->CreateTH2F(Form("purity%s", name[i]), Form("%s Purity", title[i]), 2, -0.5, 1.5, 20, 0.1, 10, 1);
183 for(Int_t idet = 0; idet < 4; idet++){
184 // create all the histograms which all the detectors have in common
185 if(idet != 2){ // no nSigma histogram for TRD
186 fOutput->CreateTH2F(Form("h%s_nSigma_%s", det[idet], name[i]), Form("%s number of sigmas for %ss; p (GeV/c); number of sigmas", det[idet], title[i]), 20, 0.1, 10, 100, -7, 7, 0);
188 fOutput->CreateTH2F(Form("h%s_PID_p_%s", det[idet], name[i]), Form("%s PID for %ss; p (GeV/c); ITS PID", det[idet], title[i]), 100, 0.1, 10, 5, -0.5, 4.5, 0);
189 fOutput->CreateTH2F(Form("h%s_El_like_%s", det[idet], name[i]), Form("%s Electron Likelihoods for %ss; p (GeV/c); likelihood", det[idet], title[i]), 25, 0.1, 10, 1000, 0., 1., 0);
190 fOutput->CreateTH2F(Form("h%s_El_like_MC_%s", det[idet], name[i]), Form("%s Electron Likelihoods for MC %ss; p (GeV/c); likelihood", det[idet], title[i]), 25, 0.1, 10, 1000, 0., 1., 0);
196 fOutput->CreateTH2F(Form("hITS_Signal_%s", name[i]), Form("ITS Signal org. for %ss", title[i]), 40, 0.1, 10, 400, 0, 1000, 0);
197 fOutput->CreateTH2Fvector1(5, Form("hITS_dEdx_%s", name[i]), Form("ITS dEdx for %ss; p (GeV/c); dEdx (a.u.)", title[i]), 40, 0.1, 10, 400, 0, 1000, 0);
202 fOutput->CreateTH2F(Form("hTPC_dEdx_%s", name[i]), Form("TPC dEdx for %ss; p (GeV/c); dEdx (a.u.)", title[i]), 20, 0.1, 10, 200, 0, 200, 0);
207 fOutput->CreateTH2F(Form("hTRD_trk_%s", name[i]), Form("%s PID tracklets; p (GeV/c); N TRD tracklets", title[i]), 100, 0.1, 10, 7, -0.5, 6.5, 0);
208 // number of the non 0 slices per tracklet
209 fOutput->CreateTH2F(Form("hTRD_Nslc_%s", name[i]), Form("%s PID slices > 0; p (GeV/c); N slc > 0", title[i]), 100, 0.1, 10, 9, -0.5, 8.5, 0);
210 // location of the slices > 0 - where are the emtpy slices located ?
211 fOutput->CreateTH2F(Form("hTRD_slc_%s", name[i]), Form("%s PID slices > 0 position; p (GeV/c); slice", title[i]), 100, 0.1, 10, 9, -0.5, 8.5, 0);
212 fOutput->CreateTH2F(Form("hTRD_cls_%s", name[i]), Form("TRD clusters for %s candidates; p (GeV/c); N cls", title[i]), 25, 0.1, 10, 1000, 0, 1000);
213 fOutput->CreateTH2F(Form("hTRD_dEdx_%s", name[i]), Form("TRD dEdx (trk) for %s candidates; p (GeV/c); tracklet dEdx (a.u.)", title[i]), 25, 0.1, 10, 1000, 0, 100000, 0);
218 fOutput->CreateTH2F(Form("hTOF_beta_%s", name[i]), Form("TOF beta for %s; p (GeV/c); #beta", title[i]), 50, 0.1, 5, 350, 0.4, 1.1, 0);
219 }//.. loop over identified particle species
222 fOutput->CreateTH1F("hITS_dEdx_nSamples", "ITS - number of non 0 dEdx samples", 4, 0.5, 4.5);
223 fOutput->CreateTH2F("hTPC_PID", "TPC pid all tracks; tpc pid probability; species",100, 0, 1, 5, -0.5, 4.5 );
224 fOutput->CreateTH2F("hTOF_PID", "TOF pid all tracks; tof pid probability; species",100, 0, 1,5, -0.5, 4.5 );
225 fOutput->CreateTH2F("hTOF_beta_all", "TOF beta for all nice single tracks; p (GeV/c); #beta", 100, 0.1, 10, 480, 0, 1.2, 0);
226 fOutput->CreateTH2F("hTOF_qa_TmT0mT", "TOF (t - t0 - t[pion]) qa verus run", 10000, 114000, 124000, 200, -200, 200);
227 fOutput->CreateTH2F("hTOF_qa_length", "TOF track length verus run", 10000, 114000, 112400, 200, 0, 1000);
232 fOutput->CreateTH2F("hITS_kFlags", "ITS flags; flag; V0 candidates", 5, 0.5, 5.5, 5, -0.5, 4.5);
233 fOutput->CreateTH2F("hTPC_kFlags", "TPC flags; flag; V0 candidates", 5, 0.5, 5.5, 5, -0.5, 4.5);
234 fOutput->CreateTH2F("hTRD_kFlags", "TRD flags; flag; V0 candidates", 5, 0.5, 5.5, 5, -0.5, 4.5);
235 fOutput->CreateTH2F("hTOF_kFlags", "TOF flags; flag; V0 candidates", 5, 0.5, 5.5, 5, -0.5, 4.5);
239 // event based histograms
241 Int_t nT0[2] = {10000, 100};
242 Double_t minT0[2] = {114500, -1000};
243 Double_t maxT0[2] = {124500, 1000};
244 fOutput->CreateTHnSparse("hEvent_T0", "T0 as a function of run number; run number; T0 (ns)", 2, nT0, minT0, maxT0);
247 // test the tender V0 supply
249 fOutput->CreateTH2F("h_tender_check_01", "tender -vs- HFEpidQA; HFEpidQA V0 candiadates; tender V0 candidates", 4, -1.5, 2.5, 4, -1.5, 2.5);
250 fOutput->CreateTH2Fvector1(3, "h_tender_check_02", "tender -vs- HFEpidQA per type; AliHFEpidQA V0 ; tender V0", 4, -1.5, 2.5, 4, -1.5, 2.5);
257 // Create Illumination Plot
258 // bins: species, pt, eta, phi, TPC status, TRD status
260 Int_t nbins[6] = {4, 40, 16, 72, 2, 2};
261 Double_t min[6] = { 0, 0.1, -0.8, 0., 0., 0.};
262 Double_t max[6] = { 4., 20., 0.8, 2*TMath::Pi(), 2., 2.};
263 fOutput->CreateTHnSparse("hIllumination", "Illumination", 6, nbins, min, max);
264 fOutput->BinLogAxis("hIllumination", 1);
268 // bins: species, pt, n TPC clusters., TPC electron likelihood, TPC n sigmas, TPC signal
270 Int_t nbins[6] = { 5, 40, 20, 100, 100, 200};
271 Double_t min[6] = { -0.5, 0.1, 0., 0., -5., 0.};
272 Double_t max[6] = { 4.5, 20., 200, 1., 5., 120.};
273 TString htitle = "TPC info sparse; VO identified species; p (GeV/c); n TPC clusters; TPC N sigma; TPC signal";
274 fOutput->CreateTHnSparse("hTPCclusters",htitle,6, nbins, min, max);
275 fOutput->BinLogAxis("hTPCclusters", 1);
277 // TRD THnSparse - entries per tracklet
278 // species, p, tracklet position, number of PID tracklets, number of slices (non 0), number of clusters, electron likelihood,
280 Int_t nbins[7] = {5, 20, 6, 7, 9, 45, 100};
281 Double_t min[7] = {-0.5, 0.5, -0.5, -0.5, -0.5, -0.5, 0.};
282 Double_t max[7] = {4.5, 10, 5.5, 6.5, 8.5, 179.5, 1.};
283 TString htitle = "TRD tracklets; VO identified species; p (GeV/c); tracklet position; No. PID tacklets; No. slices; No. clusters; El. likelihood";
284 fOutput->CreateTHnSparse("hTRDtracklets",htitle,7, nbins, min, max);
285 fOutput->BinLogAxis("hTRDtracklets", 1);
290 //__________________________________________
291 void AliHFEpidQA::Process(){
297 AliError("V0pid not available! Forgotten to initialize?");
301 AliError("fESDpid not initialized, I am leaving this!");
305 // to be udpated to AOD save mdoe
307 AliError("AliVEvent not available, returning");
310 if(fMC) fV0pidMC->SetMCEvent(fMC);
312 fV0pid->Process(fEvent);
313 TObjArray *hfeelectrons = fV0pid->GetListOfElectrons();
314 TObjArray *hfepionsK0 = fV0pid->GetListOfPionsK0();
315 TObjArray *hfepionsL = fV0pid->GetListOfPionsL();
316 TObjArray *hfeprotons = fV0pid->GetListOfProtons();
318 // Get Track list for normal purpose
319 TObjArray *electrons = MakeTrackList(hfeelectrons);
320 TObjArray *pionsK0 = MakeTrackList(hfepionsK0);
321 TObjArray *pionsL = MakeTrackList(hfepionsL);
322 TObjArray *protons = MakeTrackList(hfeprotons);
323 TObjArray *cleanElectrons = MakeCleanListElectrons(hfeelectrons);
326 fV0pidMC->Process(electrons, AliHFEV0pid::kRecoElectron);
327 fV0pidMC->Process(pionsK0, AliHFEV0pid::kRecoPionK0);
328 fV0pidMC->Process(pionsL, AliHFEV0pid::kRecoPionL);
329 fV0pidMC->Process(protons, AliHFEV0pid::kRecoProton);
332 AliDebug(2, Form("Number of Electrons : %d", electrons->GetEntries()));
333 AliDebug(2, Form("Number of K0 Pions : %d", pionsK0->GetEntries()));
334 AliDebug(2, Form("Number of Lambda Pions : %d", pionsL->GetEntries()));
335 AliDebug(2, Form("Number of Protons : %d", protons->GetEntries()));
337 AliDebug(2, "MC Information available. Doing Purity checks...");
338 // Calculate the purity of the clean samples using MC
339 MakePurity(electrons, AliHFEV0pid::kRecoElectron);
340 MakePurity(pionsK0, AliHFEV0pid::kRecoPionK0);
341 MakePurity(pionsL, AliHFEV0pid::kRecoPionL);
342 MakePurity(protons, AliHFEV0pid::kRecoProton);
345 // some event wise checks
348 // Make Illumination Plot
349 FillIllumination(electrons, AliHFEV0pid::kRecoElectron);
350 FillIllumination(pionsK0, AliHFEV0pid::kRecoPionK0);
351 FillIllumination(pionsL, AliHFEV0pid::kRecoPionL);
352 FillIllumination(protons, AliHFEV0pid::kRecoProton);
354 // Now we can do studies on the PID itself
355 // For TRD use the TRD PID QA object
356 fTRDpidQA->ProcessTracks(cleanElectrons, AliPID::kElectron);
357 fTRDpidQA->ProcessTracks(pionsK0, AliPID::kPion);
358 fTRDpidQA->ProcessTracks(pionsL, AliPID::kPion);
359 fTRDpidQA->ProcessTracks(protons, AliPID::kProton);
361 FillElectronLikelihoods(electrons, AliHFEV0pid::kRecoElectron);
362 FillElectronLikelihoods(pionsK0, AliHFEV0pid::kRecoPionK0);
363 FillElectronLikelihoods(pionsL, AliHFEV0pid::kRecoPionL);
364 FillElectronLikelihoods(protons, AliHFEV0pid::kRecoProton);
366 FillPIDresponse(electrons, AliHFEV0pid::kRecoElectron);
367 FillPIDresponse(pionsK0, AliHFEV0pid::kRecoPionK0);
368 FillPIDresponse(pionsL, AliHFEV0pid::kRecoPionL);
369 FillPIDresponse(protons, AliHFEV0pid::kRecoProton);
371 // check the tender V0s
372 CheckTenderV0pid(electrons, AliHFEV0pid::kRecoElectron);
373 CheckTenderV0pid(pionsK0, AliHFEV0pid::kRecoPionK0);
374 CheckTenderV0pid(pionsL, AliHFEV0pid::kRecoPionL);
375 CheckTenderV0pid(protons, AliHFEV0pid::kRecoProton);
377 // Analysis done, flush the containers
384 delete cleanElectrons;
387 //__________________________________________
388 void AliHFEpidQA::FillIllumination(TObjArray * const tracks, Int_t species){
390 // Fill Illumination Plot
392 THnSparseF *hIllumination = dynamic_cast<THnSparseF *>(fOutput->Get("hIllumination"));
393 if(!hIllumination) return;
395 Double_t quantities[6]; memset(quantities, 0, sizeof(Double_t) *6);
396 TIter trackIter(tracks);
398 quantities[0] = species;
399 TObject *o = NULL; AliESDtrack *esdtrack = NULL;
400 while((o = trackIter())){
401 if(!TString(o->IsA()->GetName()).CompareTo("AliESDtrack")){
402 // work on local copy in order to not spoil others
403 esdtrack = new AliESDtrack(*(dynamic_cast<AliESDtrack *>(o)));
404 } else if(!TString(o->IsA()->GetName()).CompareTo("AliAODrack")){
405 // Bad hack: Fill ESD track with AOD information
406 esdtrack = new AliESDtrack(dynamic_cast<AliAODTrack *>(o));
412 // Propagate to the entrance of the TRD
413 esdtrack->PropagateTo(300, fEvent->GetMagneticField());
414 quantities[1] = esdtrack->Pt();
415 quantities[2] = esdtrack->Eta();
416 quantities[3] = esdtrack->Phi();
417 quantities[4] = (esdtrack->GetStatus() & AliESDtrack::kTPCrefit) ? 1 : 0;
418 quantities[5] = (esdtrack->GetStatus() & AliESDtrack::kTRDout) ? 1. : 0.;
419 hIllumination->Fill(quantities);
424 //__________________________________________
425 void AliHFEpidQA::FillTPCinfo(AliESDtrack *const esdtrack, Int_t species){
427 // Fill TPC Cluster Plots
429 THnSparseF *hTPCclusters = dynamic_cast<THnSparseF *>(fOutput->Get("hTPCclusters"));
430 if(!hTPCclusters) return;
432 Double_t quantities[6]; memset(quantities, 0, sizeof(Double_t) *6);
434 Double_t pidProbs[5];
435 const Int_t typePID[5] = {0, 2, 2, 3, 4};
438 quantities[0] = species;
441 esdtrack->GetTPCpid(pidProbs);
443 quantities[1] = esdtrack->P();
444 quantities[2] = esdtrack->GetTPCNcls();
445 quantities[3] = pidProbs[0];
446 quantities[4] = fESDpid->NumberOfSigmasTPC(esdtrack,(AliPID::EParticleType)typePID[species]);
447 quantities[5] = esdtrack->GetTPCsignal();
448 hTPCclusters->Fill(quantities);
452 //__________________________________________
453 void AliHFEpidQA::MakePurity(TObjArray *tracks, Int_t species){
455 // Fill the QA histos for a given species
458 AliDebug(3, Form("Doing Purity checks for species %d", species));
459 Int_t pdg = GetPDG(species);
463 case AliHFEV0pid::kRecoElectron:
464 sprintf(hname, "purityElectron");
466 case AliHFEV0pid::kRecoPionK0:
467 sprintf(hname, "purityPionK0");
469 case AliHFEV0pid::kRecoPionL:
470 sprintf(hname, "purityPionL");
472 case AliHFEV0pid::kRecoProton:
473 sprintf(hname, "purityProton");
475 default: // non investigated species
476 AliDebug(3, "Species not investigated");
480 AliDebug(3, Form("Number of tracks: %d", tracks->GetEntries()));
481 TIter trackIter(tracks);
482 AliVParticle *recTrack = NULL, *mcTrack = NULL;
483 while((recTrack = dynamic_cast<AliVParticle *>(trackIter()))){
484 Int_t label = recTrack->GetLabel();
485 AliDebug(4, Form("MC Label %d", label));
486 mcTrack =fMC->GetTrack(TMath::Abs(label));
488 AliDebug(4, "MC track not available");
489 continue; // we don't know
494 if(!TString(mcTrack->IsA()->GetName()).CompareTo("AliMCParticle")){
496 AliMCParticle *mcp = dynamic_cast<AliMCParticle *>(mcTrack);
497 trackPdg = TMath::Abs(mcp->Particle()->GetPdgCode());
500 AliAODMCParticle *aodmcp = dynamic_cast<AliAODMCParticle *>(mcTrack);
501 trackPdg = TMath::Abs(aodmcp->GetPdgCode());
503 if(trackPdg == pdg) // Correct identification
505 fOutput->Fill(hname, 0., recTrack->Pt());
507 else // Wrong identification
508 fOutput->Fill(hname, 1., recTrack->Pt());
512 //__________________________________________
513 void AliHFEpidQA::FillElectronLikelihoods(TObjArray * const particles, Int_t species){
515 // Fill electron Likelihoods for the ITS, TPC and TOF
516 // Required for the calculation of the electron efficiency,
517 // pion and proton efficiency and the thresholds
520 const Char_t *detname[4] = {"ITS", "TPC", "TRD", "TOF"};
521 Char_t specname[256];
524 case AliHFEV0pid::kRecoElectron:
525 sprintf(specname, "Electron");
527 case AliHFEV0pid::kRecoPionK0:
528 sprintf(specname, "PionK0");
530 case AliHFEV0pid::kRecoPionL:
531 sprintf(specname, "PionL");
533 case AliHFEV0pid::kRecoProton:
534 sprintf(specname, "Proton");
537 AliDebug(2, Form("Species %d not investigated", species));
540 AliVParticle *recTrack = NULL;
541 // mcTrack =fMC->GetTrack(TMath::Abs(label));
543 // AliDebug(4, "MC track not available");
544 // continue; // we don't know
547 TIter trackIter(particles);
549 Double_t quantities[2];
550 Double_t pidProbs[5];
552 while((recTrack = dynamic_cast<AliVParticle *>(trackIter()))){
553 if(!TString(recTrack->IsA()->GetName()).CompareTo("AliESDtrack")){
555 AliESDtrack *esdTrack = dynamic_cast<AliESDtrack *>(recTrack);
556 status = esdTrack->GetStatus();
558 //TPC momentum and likelihoods
560 pTPC = esdTrack->GetInnerParam() ? esdTrack->GetInnerParam()->P() : esdTrack->P();
561 Bool_t mcFound = kFALSE;
563 Int_t label = esdTrack->GetLabel();
564 AliMCParticle *mcTrack = dynamic_cast<AliMCParticle *>(fMC->GetTrack(label));
565 Int_t pdg = GetPDG(species);
568 trackPdg = TMath::Abs(mcTrack->Particle()->GetPdgCode());
570 if(pdg == trackPdg) mcFound = kTRUE;
572 quantities[0] = pTPC;
573 Bool_t detFlagSet = kFALSE;
574 for(Int_t idet = 0; idet < 4; idet++){
575 Char_t histname[256], histnameMC[256];
576 sprintf(histname, "h%s_El_like_%s", detname[idet], specname);
577 sprintf(histnameMC, "h%s_El_like_MC_%s", detname[idet], specname);
579 case kITS: esdTrack->GetITSpid(pidProbs);
580 detFlagSet = status & AliESDtrack::kITSpid;
582 case kTPC: esdTrack->GetTPCpid(pidProbs);
583 detFlagSet = status & AliESDtrack::kTPCpid;
585 case kTRD: esdTrack->GetTRDpid(pidProbs);
586 detFlagSet = status & AliESDtrack::kTRDpid;
588 case kTOF: esdTrack->GetTOFpid(pidProbs);
589 detFlagSet = status & AliESDtrack::kTOFpid;
592 quantities[1] = pidProbs[AliPID::kElectron];
593 // in case of TRD require 6 PID tracklets
594 if(kTRD == idet && esdTrack->GetTRDntrackletsPID() != 6) continue;
596 fOutput->Fill(histname, quantities[0], quantities[1]);
598 fOutput->Fill(histnameMC, quantities[0], quantities[1]);
607 //__________________________________________
608 void AliHFEpidQA::FillPIDresponse(TObjArray * const particles, Int_t species){
610 // Fill the PID response of different detectors to V0 daughter particles
612 Char_t hname[256] = "";
613 Char_t hname2[256] = "";
614 Char_t hname3[256] = "";
616 const Char_t *typeName[5] = {"Electron", "PionK0", "PionL", "Kaon", "Proton"};
617 const Int_t typePID[5] = {0, 2, 2, 3, 4};
621 // 0) species, 1) momentum, 2) DCA xy, 3) DCA z
623 // 5) TPC Ncls 6) TPC signal 7) TPC nSigma,
624 // 8) TRD Ntrk, 9) TRD Ncls, 10) TRD dEdx,
627 memset(data, -99, sizeof(Double_t) *12);
629 Int_t run = fEvent->GetRunNumber();
631 AliVParticle *recTrack = NULL;
632 TIter trackIter(particles);
633 while((recTrack = dynamic_cast<AliVParticle *>(trackIter()))){
634 memset(data, -99, sizeof(Double_t) *10);
636 if(!TString(recTrack->IsA()->GetName()).CompareTo("AliESDtrack")){
638 AliESDtrack *esdTrack = dynamic_cast<AliESDtrack *>(recTrack);
639 if(!esdTrack) continue;
641 // for the PID THnSparse
643 data[1] = esdTrack->P();
644 Float_t impactR = -1.;
645 Float_t impactZ = -1.;
646 esdTrack->GetImpactParameters(impactR, impactZ);
649 data[11] = 0; // initialize the TOF pid cut on elecgrons to false
650 // use ONLY tracks with PID flag TRUE
652 status = esdTrack->GetStatus();
658 fOutput->Fill("hITS_kFlags", 5., species);
659 if(status & AliESDtrack::kITSin) fOutput->Fill("hITS_kFlags", 1., species);
660 if(status & AliESDtrack::kITSout) fOutput->Fill("hITS_kFlags", 2., species);
661 if(status & AliESDtrack::kITSrefit) fOutput->Fill("hITS_kFlags", 3., species);
662 if(status & AliESDtrack::kITSpid) fOutput->Fill("hITS_kFlags", 4., species);
664 fOutput->Fill("hTPC_kFlags", 5., species);
665 if(status & AliESDtrack::kTPCin) fOutput->Fill("hTPC_kFlags", 1., species);
666 if(status & AliESDtrack::kTPCout) fOutput->Fill("hTPC_kFlags", 2., species);
667 if(status & AliESDtrack::kTPCrefit) fOutput->Fill("hTPC_kFlags", 3., species);
668 if(status & AliESDtrack::kTPCpid) fOutput->Fill("hTPC_kFlags", 4., species);
670 fOutput->Fill("hTRD_kFlags", 5., species);
671 if(status & AliESDtrack::kTRDin) fOutput->Fill("hTRD_kFlags", 1., species);
672 if(status & AliESDtrack::kTRDout) fOutput->Fill("hTRD_kFlags", 2., species);
673 if(status & AliESDtrack::kTRDrefit) fOutput->Fill("hTRD_kFlags", 3., species);
674 if(status & AliESDtrack::kTRDpid) fOutput->Fill("hTRD_kFlags", 4., species);
676 fOutput->Fill("hTOF_kFlags", 5., species);
677 if(status & AliESDtrack::kTOFin) fOutput->Fill("hTOF_kFlags", 1., species);
678 if(status & AliESDtrack::kTOFout) fOutput->Fill("hTOF_kFlags", 2., species);
679 if(status & AliESDtrack::kTOFrefit) fOutput->Fill("hTOF_kFlags", 3., species);
680 if(status & AliESDtrack::kTOFpid) fOutput->Fill("hTOF_kFlags", 4., species);
686 if(status & AliESDtrack::kITSpid){
687 Double_t p = esdTrack->P();
690 //Double_t itsSignal = esdTrack->GetITSsignal();
693 Double_t dEdxSamples[4];
694 esdTrack->GetITSdEdxSamples(dEdxSamples);
696 Double_t dEdxSum = 0.;
697 sprintf(hname, "hITS_dEdx_%s", typeName[species]);
698 for(Int_t i=0; i<4; ++i){
699 if(dEdxSamples[i] > 0){
701 fOutput->Fill(hname, i+1, p, dEdxSamples[i]);
702 dEdxSum += dEdxSamples[i];
705 if(4 == nSamples)fOutput->Fill(hname, 0, p, dEdxSum);
706 fOutput->Fill("hITS_dEdx_nSamples", nSamples);
708 Double_t signal = esdTrack->GetITSsignal();
709 sprintf(hname, "hITS_Signal_%s", typeName[species]);
710 fOutput->Fill(hname, p, signal);
713 // ITS number of signas
714 Double_t nsigma = fESDpid->NumberOfSigmasITS(esdTrack,(AliPID::EParticleType)typePID[species]);
715 sprintf(hname, "hITS_nSigma_%s", typeName[species]);
716 fOutput->Fill(hname, p, nsigma);
719 Double_t itsPID[5] = {-1, -1, -1, -1, -1};
720 esdTrack->GetITSpid(itsPID);
721 Int_t ix = GetMaxPID(itsPID);
722 sprintf(hname, "hITS_PID_p_%s", typeName[species]);
723 fOutput->Fill(hname, p, ix);
729 if(status & AliESDtrack::kTPCpid){
730 // Make TPC clusters Plot
731 data[5] = esdTrack->GetTPCNcls();
732 FillTPCinfo(esdTrack, species);
734 Double_t p = esdTrack->GetInnerParam() ? esdTrack->GetInnerParam()->P() : esdTrack->P();
736 Double_t dEdx = esdTrack->GetTPCsignal();
737 sprintf(hname, "hTPC_dEdx_%s", typeName[species]);
738 fOutput->Fill(hname, p, dEdx);
741 //TPC number of sigmas
742 Double_t nsigma = fESDpid->NumberOfSigmasTPC(esdTrack,(AliPID::EParticleType)typePID[species]);
743 sprintf(hname, "hTPC_nSigma_%s", typeName[species]);
744 fOutput->Fill(hname, p, nsigma);
748 sprintf(hname, "hTPC_PID_p_%s", typeName[species]);
749 Double_t tpcPID[5] = {-1, -1, -1, -1, -1};
750 esdTrack->GetTPCpid(tpcPID);
751 Int_t ix = GetMaxPID(tpcPID);
752 fOutput->Fill(hname, p, ix);
759 if(status & AliESDtrack::kTRDpid){
760 Double_t p = esdTrack->GetOuterParam() ? esdTrack->GetOuterParam()->P() : esdTrack->P();
762 // TRD number of tracklets
763 Int_t ntrk = esdTrack->GetTRDntrackletsPID();
764 sprintf(hname, "hTRD_trk_%s", typeName[species]);
765 fOutput->Fill(hname, p, ntrk);
769 sprintf(hname, "hTRD_PID_p_%s", typeName[species]);
770 Double_t trdPID[5] = {-1., -1., -1., -1., -1};
771 esdTrack->GetTRDpid(trdPID);
772 Int_t ix = GetMaxPID(trdPID);
773 fOutput->Fill(hname, p, ix);
775 Int_t ncls = esdTrack->GetTRDncls();
776 sprintf(hname, "hTRD_cls_%s", typeName[species]);
777 fOutput->Fill(hname, p, ncls);
780 // TRD - per tracklet - dEdx per, likelihood
781 sprintf(hname, "hTRD_Nslc_%s", typeName[species]);
782 sprintf(hname2, "hTRD_slc_%s", typeName[species]);
783 sprintf(hname3, "hTRD_dEdx_%s", typeName[species]);
784 Int_t nSlices = esdTrack->GetNumberOfTRDslices();
785 Double_t sumTot = 0.;
787 for(Int_t l=0; l< 6; ++l){
788 Double_t trkData[7] = {-1.,-1, -1, -1, -1, -1, -1};
789 trkData[0] = species;
796 for(Int_t s=0; s<nSlices; ++s){
797 Double_t slice = esdTrack->GetTRDslice(l, s);
801 fOutput->Fill(hname2, p, s);
806 fOutput->Fill(hname, p, not0);
807 fOutput->Fill(hname3, p, sum);
812 // lkelihoods per layer
813 if(not0Tot > 0 && fNNref){
814 Double_t likelihoods[5] = {-1., -1., -1., -1., -1};
815 TRDlikeTracklet(l, esdTrack, likelihoods);
816 trkData[6] = likelihoods[0];
817 //printf(" -D: species: %i, P; %f : %f, s: %f\n", species, p, likelihoods[0], s);
819 if(not0Tot) fOutput->Fill("hTRDtracklets", trkData);
821 // average dEx per number of tracklets
823 data[10] = sumTot / not0Tot;
830 if(status & AliESDtrack::kTOFpid){
831 Double_t p = esdTrack->GetOuterParam() ? esdTrack->GetOuterParam()->P() : esdTrack->P();
832 Double_t t0 = fESDpid->GetTOFResponse().GetTimeZero();
835 sprintf(hname, "hTOF_beta_%s", typeName[species]);
836 Float_t beta = TOFbeta(esdTrack);
837 fOutput->Fill(hname, p, beta);
838 fOutput->Fill("hTOF_beta_all", p, beta);
840 Double_t nsigma = fESDpid->NumberOfSigmasTOF(esdTrack,(AliPID::EParticleType)typePID[species], t0);
841 sprintf(hname, "hTOF_nSigma_%s", typeName[species]);
842 fOutput->Fill(hname, p, nsigma);
843 if(beta > 0.97 && beta < 1.03){
848 sprintf(hname, "hTOF_PID_p_%s", typeName[species]);
849 Double_t tofPID[5] = {-1., -1., -1., -1., -1};
850 esdTrack->GetTOFpid(tofPID);
851 Int_t ix = GetMaxPID(tofPID);
852 fOutput->Fill(hname, p, ix);
855 // - distribution of (time - t0 - pion_time)
857 esdTrack->GetIntegratedTimes(times);
858 Double_t tItrackL = esdTrack->GetIntegratedLength();
859 Double_t tTOFsignal = esdTrack->GetTOFsignal();
860 Double_t dT = tTOFsignal - t0 - times[2];
861 fOutput->Fill("hTOF_qa_TmT0mT", run*1.0, dT);
862 fOutput->Fill("hTOF_qa_length", run*1.0, tItrackL);
866 // temporary - the PIDsparse needs rebuilding
867 //fOutput->Fill("PIDsparse", data);
869 // AOD - comming soon
873 }// .. tracks in TObjArray
877 //__________________________________________
878 void AliHFEpidQA:: CheckEvent(){
880 // check some event variables
883 // check the T0 as a function of run number (less than one bin per number
884 Double_t t0 = fESDpid->GetTOFResponse().GetTimeZero();
885 Int_t run = fEvent->GetRunNumber();
886 Double_t data[2] = {run*1.0, t0*1000.};
887 fOutput->Fill("hEvent_T0", data);
891 //__________________________________________
892 TList *AliHFEpidQA::GetOutput(){
894 // Getter for Output histograms
896 return fOutput->GetList();
899 //__________________________________________
900 TList *AliHFEpidQA::GetV0pidQA(){
902 // Getter for V0 PID QA histograms
904 return fV0pid->GetListOfQAhistograms();
907 //__________________________________________
908 TList *AliHFEpidQA::GetV0pidMC(){
910 // Getter for V0 PID QA histograms
913 return fV0pidMC->GetListOfQAhistograms();
917 //__________________________________________
918 void AliHFEpidQA::RecalculateTRDpid(AliESDtrack * /*track*/, Double_t * /*pidProbs*/) const{
919 // fTRDpidResponse->MakePID(track);
920 // track->GetTRDpid(pidProbs);
923 //__________________________________________
924 void AliHFEpidQA::RecalculateTRDpid(AliAODTrack * /*track*/, Double_t * /*pidProbs*/) const{
925 // fTRDpidResponse->MakePID(track, pidProbs);
927 //___________________________________________________________________
928 Float_t AliHFEpidQA::TOFbeta(AliESDtrack * const track) const {
929 // computes the TOF beta
930 Double_t l = track->GetIntegratedLength(); // cm
931 Double_t t = track->GetTOFsignal();
932 Double_t t0 = fESDpid->GetTOFResponse().GetTimeZero(); // ps
934 //printf("-D: l: %f, t: %f, t0: %f\n", l, t, t0);
936 if(l < 360. || l > 800.) return 0.;
937 if(t <= 0.) return 0.;
938 if(t0 >999990.0) return 0.;
941 t -= t0; // subtract the T0
944 t *= 1e-12; //ps -> s
948 Float_t beta = v / TMath::C();
952 //____________________________________________
953 Int_t AliHFEpidQA::GetMaxPID(Double_t *pidProbs) const {
955 // return the index of maximal PID probability
959 for(Int_t i=0; i<5; ++i){
960 if(pidProbs[i] > tmp){
967 //_____________________________________________
968 Int_t AliHFEpidQA::GetPDG(Int_t species){
970 // return the PDG particle code
976 case AliHFEV0pid::kRecoElectron:
977 pdg = TMath::Abs(kElectron);
979 case AliHFEV0pid::kRecoPionK0:
980 pdg = TMath::Abs(kPiPlus);
982 case AliHFEV0pid::kRecoPionL:
983 pdg = TMath::Abs(kPiPlus);
985 case AliHFEV0pid::kRecoProton:
986 pdg = TMath::Abs(kProton);
988 default: // non investigated species
989 AliDebug(3, "Species not recognised");
997 //_____________________________________________
998 TObjArray * AliHFEpidQA::MakeTrackList(TObjArray *tracks) const {
1000 // convert list of AliHFEV0Info into a list of AliVParticle
1002 TObjArray *output = new TObjArray;
1003 TIter trackInfos(tracks);
1004 AliHFEV0info *trackInfo = NULL;
1005 while((trackInfo = dynamic_cast<AliHFEV0info *>(trackInfos())))
1006 output->Add(trackInfo->GetTrack());
1011 //_____________________________________________
1012 TObjArray * AliHFEpidQA::MakeCleanListElectrons(TObjArray *electrons) const {
1014 // Cleanup electron sample using TPC PID
1015 // PID requirement will allways be implemented to the pair
1018 TObjArray *tracks = new TObjArray;
1019 TIter candidates(electrons);
1020 AliESDEvent *esd; AliAODEvent *aod;
1021 AliHFEV0info *hfetrack;
1022 // const Double_t kSigmaTight = 1.;
1023 // const Double_t kSigmaLoose = 4.;
1024 const Double_t kSigmaTight = 0.5;
1025 const Double_t kSigmaLoose = 0.5;
1026 const Double_t shift = 1.;
1027 if((esd = dynamic_cast<AliESDEvent *>(fEvent))){
1028 AliESDtrack *track = NULL, *partnerTrack = NULL;
1029 while((hfetrack = dynamic_cast<AliHFEV0info *>(candidates()))){
1030 track = dynamic_cast<AliESDtrack *>(hfetrack->GetTrack());
1031 partnerTrack = esd->GetTrack(hfetrack->GetPartnerID());
1032 Double_t nSigmaTrack = TMath::Abs(fESDpid->NumberOfSigmasTPC(track, AliPID::kElectron) - shift);
1033 Double_t nSigmaPartner = TMath::Abs(fESDpid->NumberOfSigmasTPC(partnerTrack, AliPID::kElectron) - shift);
1034 if((nSigmaTrack < kSigmaTight && nSigmaPartner < kSigmaLoose) || (nSigmaTrack < kSigmaLoose && nSigmaPartner < kSigmaTight))
1038 aod = dynamic_cast<AliAODEvent *>(fEvent);
1039 AliAODTrack *track = NULL, *partnerTrack = NULL;
1040 while((hfetrack = dynamic_cast<AliHFEV0info *>(candidates()))){
1041 track = dynamic_cast<AliAODTrack *>(hfetrack->GetTrack());
1042 partnerTrack = aod->GetTrack(hfetrack->GetPartnerID());
1043 // will be coming soon
1048 //___________________________________________________________
1049 void AliHFEpidQA::CheckTenderV0pid(TObjArray * const particles, Int_t species){
1052 // retrieve the status bits from the TObject used to flag
1053 // the V0 daughter tracks and return the found PID
1054 // 0 - electron, 1 - pion, 2 - proton
1057 const Int_t id[5] = {0, 1, 1, -1, 2}; // convert AliHFEpid to simple 0, 1, 2
1059 AliVParticle *recTrack = NULL;
1060 TIter trackIter(particles);
1061 while((recTrack = dynamic_cast<AliVParticle *>(trackIter()))){
1062 if(!TString(recTrack->IsA()->GetName()).CompareTo("AliESDtrack")){
1064 AliESDtrack *track = dynamic_cast<AliESDtrack *>(recTrack);
1065 if(!track) continue;
1066 Int_t tPID = GetTenderV0pid(track);
1067 fOutput->Fill("h_tender_check_01", id[species]*1.0, tPID);
1068 fOutput->Fill("h_tender_check_02", id[species], id[species]*1.0, tPID);
1072 }//.. iterate of tracks
1074 //___________________________________________________________
1075 Int_t AliHFEpidQA::GetTenderV0pid(AliESDtrack * const track){
1077 // retrieve the PID nformation stored in the status flags by the train tender
1088 if(track->TestBit(2<<14)){
1092 if(track->TestBit(2<<15)){
1096 if(track->TestBit(2<<16)){
1102 AliWarning("V0 track labeled multiple times by the V0 tender");
1109 //___________________________________________________________
1110 Double_t AliHFEpidQA::TRDlikeTracklet(Int_t layer, AliESDtrack * const track, Double_t *likelihood){
1112 // compute the TRD electron likelihoods for 1 tracklet
1113 // based on teh AliTRDpidRecalculator in train/until/tender
1114 // returns sum of the likelihoods (which should be 1)
1117 const Double_t cScaleGain = 1./ 16000.;
1118 const Float_t pBins[11] ={0.6, 0.8, 1.0, 1.5, 2.0, 3.0, 4.0, 5.0, 6.0, 8.0, 10.0}; // momentum bins
1120 if(!track) return kFALSE;
1121 Float_t p = track->GetTRDmomentum(layer); // momentum for a tracklet in the ESDtrack
1122 if(p < 0) return kFALSE;
1124 Int_t mombin = TRDmomBin(p); // momentum bin
1125 Float_t dEdxTRDsum = 0; // dEdxTRDsum for checking if tracklet is available
1126 Float_t dEdxTRD[8]; // dEdx for a tracklet in the ESD slices
1127 Double_t ddEdxTRD[8]; // dEdx as Double_t for TMultiLayerPerceptron::Evaluate()
1129 Double_t prob[AliPID::kSPECIES]; // probabilities for all species in all layers
1131 for(Int_t is = 0; is < AliPID::kSPECIES; is++){
1132 likelihood[is] = 0.2; // init probabilities
1138 for(Int_t islice = 0; islice<8; islice++){
1139 dEdxTRD[islice]=0.; // init dE/dx
1140 ddEdxTRD[islice]=0.; // init dE/dx
1141 dEdxTRD[islice]=track->GetTRDslice(layer,islice); // get the dE/dx values
1142 dEdxTRDsum += dEdxTRD[islice];
1143 ddEdxTRD[islice]=(Double_t)dEdxTRD[islice]*cScaleGain; // rescale dE/dx
1146 for(Int_t is = 0; is < AliPID::kSPECIES; is++){
1147 Double_t probloc1, probloc2;
1148 if(mombin == 0 && mombin < pBins[0]){ // calculate PID for p > 0.6 GeV/c
1149 prob[is] = fNet[mombin]->Evaluate(is, ddEdxTRD);
1151 else if(mombin == 10 && mombin >= pBins[10]){ // calculate PID for p >= 10.0 GeV/c
1152 prob[is] = fNet[mombin]->Evaluate(is, ddEdxTRD);
1154 else{ // standard calculation
1155 Int_t mombin1 = 0, mombin2 = 0; // lower and upper momentum bin
1156 if(p < pBins[mombin]) {mombin1 = mombin -1; mombin2 = mombin;}
1157 if(p >= pBins[mombin]) {mombin1 = mombin; mombin2 = mombin+1;}
1158 probloc1 = fNet[mombin1]->Evaluate(is, ddEdxTRD);
1159 probloc2 = fNet[mombin2]->Evaluate(is, ddEdxTRD);
1160 // weighting of the probability with regard to the track momentum
1161 prob[is] = probloc1 + (probloc2-probloc1)*(p-pBins[mombin1])/(pBins[mombin2]-pBins[mombin1]);
1163 likelihood[is] = prob[is];
1164 sum += likelihood[is];
1169 //__________________________________________________________________________
1170 Int_t AliHFEpidQA::TRDmomBin(Double_t p){
1172 // compute the momentum bin position
1175 const Float_t pBins[11] ={0.6, 0.8, 1.0, 1.5, 2.0, 3.0, 4.0, 5.0, 6.0, 8.0, 10.0}; // momentum bins
1177 Int_t pBin1 = -1; // check bin1
1178 Int_t pBin2 = -1; // check bin2
1180 if(p < 0) return -1; // return -1 if momentum < 0
1181 if(p < pBins[0]) return 0; // smallest momentum bin
1182 if(p >= pBins[10]) return 10; // largest momentum bin
1185 // calculate momentum bin for non extremal momenta
1186 for(Int_t iMomBin = 1; iMomBin < 11; iMomBin++){
1187 if(p < pBins[iMomBin]){
1188 pBin1 = iMomBin - 1;
1194 if(p - pBins[pBin1] >= pBins[pBin2] - p){
1206 //__________________________________________________________________________