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 "AliHFEV0cuts.h"
53 #include "AliHFEtrdPIDqa.h"
58 //__________________________________________
59 AliHFEpidQA::AliHFEpidQA():
70 // Default constructor
72 for(Int_t mom = 0; mom < 11; mom++){
77 //__________________________________________
78 AliHFEpidQA::AliHFEpidQA(const AliHFEpidQA &ref):
92 for(Int_t mom = 0; mom < 11; mom++){
98 //__________________________________________
99 AliHFEpidQA &AliHFEpidQA::operator=(const AliHFEpidQA &ref){
101 // Assignment operator
108 //__________________________________________
109 AliHFEpidQA::~AliHFEpidQA(){
113 if(fV0pid) delete fV0pid;
114 if(fV0pidMC) delete fV0pidMC;
115 if(fTRDpidQA) delete fTRDpidQA;
116 if(fOutput) delete fOutput;
117 // if(fTRDpidResponse) delete fTRDpidResponse;
120 //__________________________________________
121 void AliHFEpidQA::Copy(TObject &o) const {
128 AliHFEpidQA &target = dynamic_cast<AliHFEpidQA &>(o);
131 if(target.fESDpid) delete target.fESDpid;
132 target.fESDpid = new AliESDpid;
133 if(target.fV0pid) delete target.fV0pid;
135 target.fV0pid = dynamic_cast<AliHFEV0pid *>(fV0pid->Clone());
137 target.fV0pid = NULL;
138 if(target.fV0pidMC) delete target.fV0pidMC;
140 target.fV0pidMC = dynamic_cast<AliHFEV0pidMC *>(fV0pidMC->Clone());
142 target.fV0pidMC = NULL;
143 if(target.fTRDpidQA) delete target.fTRDpidQA;
145 target.fTRDpidQA = dynamic_cast<AliHFEtrdPIDqa *>(fTRDpidQA->Clone());
147 target.fTRDpidQA = NULL;
148 if(target.fOutput) delete target.fOutput;
150 target.fOutput = dynamic_cast<AliHFEcollection *>(fOutput->Clone());
153 //__________________________________________
154 void AliHFEpidQA::Init(){
156 // Prepare task output
161 for(Int_t mom = 0; mom < 11; mom++){
162 fNet[mom] = (TMultiLayerPerceptron*) fNNref->Get(Form("NN_Mom%d", mom));
164 AliError(Form("No reference network for momentum bin %d!", mom));
169 fV0pid = new AliHFEV0pid();
170 if(HasV0pidQA()) fV0pid->InitQA();
171 fV0pidMC = new AliHFEV0pidMC();
174 fTRDpidQA = new AliHFEtrdPIDqa;
177 fOutput = new AliHFEcollection("pidQA", "PID QA output");
179 const char *name[4] = {"Electron", "PionK0", "PionL", "Proton"};
180 const char *title[4] = {"Electron", "K0 Pion", "Lambda Pion", "Proton"};
181 const char *det[4] = {"ITS", "TPC", "TRD", "TOF"};
182 for(Int_t i = 0; i < 4; i++){
183 fOutput->CreateTH2F(Form("purity%s", name[i]), Form("%s Purity", title[i]), 2, -0.5, 1.5, 20, 0.1, 10, 1);
185 for(Int_t idet = 0; idet < 4; idet++){
186 // create all the histograms which all the detectors have in common
187 if(idet != 2){ // no nSigma histogram for TRD
188 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);
190 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);
191 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);
192 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);
198 fOutput->CreateTH2F(Form("hITS_Signal_%s", name[i]), Form("ITS Signal org. for %ss", title[i]), 40, 0.1, 10, 400, 0, 1000, 0);
199 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);
204 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);
209 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);
210 // number of the non 0 slices per tracklet
211 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);
212 // location of the slices > 0 - where are the emtpy slices located ?
213 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);
214 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);
215 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);
220 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);
221 }//.. loop over identified particle species
224 fOutput->CreateTH1F("hITS_dEdx_nSamples", "ITS - number of non 0 dEdx samples", 4, 0.5, 4.5);
225 fOutput->CreateTH2F("hTPC_PID", "TPC pid all tracks; tpc pid probability; species",100, 0, 1, 5, -0.5, 4.5 );
226 fOutput->CreateTH2F("hTOF_PID", "TOF pid all tracks; tof pid probability; species",100, 0, 1,5, -0.5, 4.5 );
227 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);
228 fOutput->CreateTH2F("hTOF_qa_TmT0mT", "TOF (t - t0 - t[pion]) qa verus run", 10000, 114000, 124000, 200, -200, 200);
229 fOutput->CreateTH2F("hTOF_qa_length", "TOF track length verus run", 10000, 114000, 112400, 200, 0, 1000);
234 fOutput->CreateTH2F("hITS_kFlags", "ITS flags; flag; V0 candidates", 5, 0.5, 5.5, 5, -0.5, 4.5);
235 fOutput->CreateTH2F("hTPC_kFlags", "TPC flags; flag; V0 candidates", 5, 0.5, 5.5, 5, -0.5, 4.5);
236 fOutput->CreateTH2F("hTRD_kFlags", "TRD flags; flag; V0 candidates", 5, 0.5, 5.5, 5, -0.5, 4.5);
237 fOutput->CreateTH2F("hTOF_kFlags", "TOF flags; flag; V0 candidates", 5, 0.5, 5.5, 5, -0.5, 4.5);
241 // event based histograms
243 Int_t nT0[2] = {10000, 100};
244 Double_t minT0[2] = {114500, -1000};
245 Double_t maxT0[2] = {124500, 1000};
246 fOutput->CreateTHnSparse("hEvent_T0", "T0 as a function of run number; run number; T0 (ns)", 2, nT0, minT0, maxT0);
249 // test the tender V0 supply
251 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);
252 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);
259 // Create Illumination Plot
260 // bins: species, pt, eta, phi, TPC status, TRD status
262 Int_t nbins[6] = {4, 40, 16, 72, 2, 2};
263 Double_t min[6] = { 0, 0.1, -0.8, 0., 0., 0.};
264 Double_t max[6] = { 4., 20., 0.8, 2*TMath::Pi(), 2., 2.};
265 fOutput->CreateTHnSparse("hIllumination", "Illumination", 6, nbins, min, max);
266 fOutput->BinLogAxis("hIllumination", 1);
270 // bins: species, pt, n TPC clusters., TPC electron likelihood, TPC n sigmas, TPC signal
272 Int_t nbins[6] = { 5, 40, 20, 100, 100, 200};
273 Double_t min[6] = { -0.5, 0.1, 0., 0., -5., 0.};
274 Double_t max[6] = { 4.5, 20., 200, 1., 5., 120.};
275 TString htitle = "TPC info sparse; VO identified species; p (GeV/c); n TPC clusters; TPC N sigma; TPC signal";
276 fOutput->CreateTHnSparse("hTPCclusters",htitle,6, nbins, min, max);
277 fOutput->BinLogAxis("hTPCclusters", 1);
279 // TRD THnSparse - entries per tracklet
280 // species, p, tracklet position, number of PID tracklets, number of slices (non 0), number of clusters, electron likelihood,
283 Int_t nbins[7] = {5, 20, 6, 7, 9, 45, 100};
284 Double_t min[7] = {-0.5, 0.5, -0.5, -0.5, -0.5, -0.5, 0.};
285 Double_t max[7] = {4.5, 10, 5.5, 6.5, 8.5, 179.5, 1.};
286 TString htitle = "TRD tracklets; VO identified species; p (GeV/c); tracklet position; No. PID tacklets; No. slices; No. clusters; El. likelihood";
287 fOutput->CreateTHnSparse("hTRDtracklets",htitle,7, nbins, min, max);
288 fOutput->BinLogAxis("hTRDtracklets", 1);
293 //__________________________________________
294 void AliHFEpidQA::Process(){
300 AliError("V0pid not available! Forgotten to initialize?");
304 AliError("fESDpid not initialized, I am leaving this!");
308 // to be udpated to AOD save mdoe
310 AliError("AliVEvent not available, returning");
314 if(fMC) fV0pidMC->SetMCEvent(fMC);
315 if(fMC) fV0pid->SetMCEvent(fMC);
317 fV0pid->Process(fEvent);
318 TObjArray *hfeelectrons = fV0pid->GetListOfElectrons();
319 TObjArray *hfepionsK0 = fV0pid->GetListOfPionsK0();
320 TObjArray *hfepionsL = fV0pid->GetListOfPionsL();
321 TObjArray *hfeprotons = fV0pid->GetListOfProtons();
323 // Get Track list for normal purpose
324 TObjArray *electrons = MakeTrackList(hfeelectrons);
325 TObjArray *pionsK0 = MakeTrackList(hfepionsK0);
326 TObjArray *pionsL = MakeTrackList(hfepionsL);
327 TObjArray *protons = MakeTrackList(hfeprotons);
328 TObjArray *cleanElectrons = MakeCleanListElectrons(hfeelectrons);
331 fV0pidMC->Process(electrons, AliHFEV0cuts::kRecoElectron);
332 fV0pidMC->Process(pionsK0, AliHFEV0cuts::kRecoPionK0);
333 fV0pidMC->Process(pionsL, AliHFEV0cuts::kRecoPionL);
334 fV0pidMC->Process(protons, AliHFEV0cuts::kRecoProton);
337 AliDebug(2, Form("Number of Electrons : %d", electrons->GetEntries()));
338 AliDebug(2, Form("Number of K0 Pions : %d", pionsK0->GetEntries()));
339 AliDebug(2, Form("Number of Lambda Pions : %d", pionsL->GetEntries()));
340 AliDebug(2, Form("Number of Protons : %d", protons->GetEntries()));
342 AliDebug(2, "MC Information available. Doing Purity checks...");
343 // Calculate the purity of the clean samples using MC
344 MakePurity(electrons, AliHFEV0cuts::kRecoElectron);
345 MakePurity(pionsK0, AliHFEV0cuts::kRecoPionK0);
346 MakePurity(pionsL, AliHFEV0cuts::kRecoPionL);
347 MakePurity(protons, AliHFEV0cuts::kRecoProton);
350 // some event wise checks
353 // Make Illumination Plot
354 FillIllumination(electrons, AliHFEV0cuts::kRecoElectron);
355 FillIllumination(pionsK0, AliHFEV0cuts::kRecoPionK0);
356 FillIllumination(pionsL, AliHFEV0cuts::kRecoPionL);
357 FillIllumination(protons, AliHFEV0cuts::kRecoProton);
359 // Now we can do studies on the PID itself
360 // For TRD use the TRD PID QA object
361 fTRDpidQA->ProcessTracks(cleanElectrons, AliPID::kElectron);
362 fTRDpidQA->ProcessTracks(pionsK0, AliPID::kPion);
363 fTRDpidQA->ProcessTracks(pionsL, AliPID::kPion);
364 fTRDpidQA->ProcessTracks(protons, AliPID::kProton);
366 FillElectronLikelihoods(electrons, AliHFEV0cuts::kRecoElectron);
367 FillElectronLikelihoods(pionsK0, AliHFEV0cuts::kRecoPionK0);
368 FillElectronLikelihoods(pionsL, AliHFEV0cuts::kRecoPionL);
369 FillElectronLikelihoods(protons, AliHFEV0cuts::kRecoProton);
371 FillPIDresponse(electrons, AliHFEV0cuts::kRecoElectron);
372 FillPIDresponse(pionsK0, AliHFEV0cuts::kRecoPionK0);
373 FillPIDresponse(pionsL, AliHFEV0cuts::kRecoPionL);
374 FillPIDresponse(protons, AliHFEV0cuts::kRecoProton);
376 // check the tender V0s
377 CheckTenderV0pid(electrons, AliHFEV0cuts::kRecoElectron);
378 CheckTenderV0pid(pionsK0, AliHFEV0cuts::kRecoPionK0);
379 CheckTenderV0pid(pionsL, AliHFEV0cuts::kRecoPionL);
380 CheckTenderV0pid(protons, AliHFEV0cuts::kRecoProton);
382 // Analysis done, flush the containers
389 delete cleanElectrons;
392 //__________________________________________
393 void AliHFEpidQA::FillIllumination(const TObjArray * const tracks, Int_t species){
395 // Fill Illumination Plot
397 THnSparseF *hIllumination = dynamic_cast<THnSparseF *>(fOutput->Get("hIllumination"));
398 if(!hIllumination) return;
400 Double_t quantities[6]; memset(quantities, 0, sizeof(Double_t) *6);
401 TIter trackIter(tracks);
403 quantities[0] = species;
404 TObject *o = NULL; AliESDtrack *esdtrack = NULL;
405 while((o = trackIter())){
406 if(!TString(o->IsA()->GetName()).CompareTo("AliESDtrack")){
407 // work on local copy in order to not spoil others
408 esdtrack = new AliESDtrack(*(dynamic_cast<AliESDtrack *>(o)));
409 if(!esdtrack) continue;
410 } else if(!TString(o->IsA()->GetName()).CompareTo("AliAODrack")){
411 // Bad hack: Fill ESD track with AOD information
412 esdtrack = new AliESDtrack(dynamic_cast<AliAODTrack *>(o));
413 if(!esdtrack) continue;
419 // Propagate to the entrance of the TRD
420 esdtrack->PropagateTo(300, fEvent->GetMagneticField());
421 quantities[1] = esdtrack->Pt();
422 quantities[2] = esdtrack->Eta();
423 quantities[3] = esdtrack->Phi();
424 quantities[4] = (esdtrack->GetStatus() & AliESDtrack::kTPCrefit) ? 1 : 0;
425 quantities[5] = (esdtrack->GetStatus() & AliESDtrack::kTRDout) ? 1. : 0.;
426 hIllumination->Fill(quantities);
431 //__________________________________________
432 void AliHFEpidQA::FillTPCinfo(AliESDtrack *const esdtrack, Int_t species){
434 // Fill TPC Cluster Plots
436 THnSparseF *hTPCclusters = dynamic_cast<THnSparseF *>(fOutput->Get("hTPCclusters"));
437 if(!hTPCclusters) return;
439 Double_t quantities[6]; memset(quantities, 0, sizeof(Double_t) *6);
441 Double_t pidProbs[5];
442 const Int_t typePID[5] = {0, 2, 2, 3, 4};
445 quantities[0] = species;
448 esdtrack->GetTPCpid(pidProbs);
450 quantities[1] = esdtrack->P();
451 quantities[2] = esdtrack->GetTPCNcls();
452 quantities[3] = pidProbs[0];
453 quantities[4] = fESDpid->NumberOfSigmasTPC(esdtrack,(AliPID::EParticleType)typePID[species]);
454 quantities[5] = esdtrack->GetTPCsignal();
455 hTPCclusters->Fill(quantities);
459 //__________________________________________
460 void AliHFEpidQA::MakePurity(const TObjArray *tracks, Int_t species){
462 // Fill the QA histos for a given species
465 AliDebug(3, Form("Doing Purity checks for species %d", species));
466 Int_t pdg = GetPDG(species);
470 case AliHFEV0cuts::kRecoElectron:
471 sprintf(hname, "purityElectron");
473 case AliHFEV0cuts::kRecoPionK0:
474 sprintf(hname, "purityPionK0");
476 case AliHFEV0cuts::kRecoPionL:
477 sprintf(hname, "purityPionL");
479 case AliHFEV0cuts::kRecoProton:
480 sprintf(hname, "purityProton");
482 default: // non investigated species
483 AliDebug(3, "Species not investigated");
487 AliDebug(3, Form("Number of tracks: %d", tracks->GetEntries()));
488 TIter trackIter(tracks);
489 AliVParticle *recTrack = NULL, *mcTrack = NULL;
490 while((recTrack = dynamic_cast<AliVParticle *>(trackIter()))){
491 Int_t label = recTrack->GetLabel();
492 AliDebug(4, Form("MC Label %d", label));
493 mcTrack =fMC->GetTrack(TMath::Abs(label));
495 AliDebug(4, "MC track not available");
496 continue; // we don't know
501 if(!TString(mcTrack->IsA()->GetName()).CompareTo("AliMCParticle")){
503 AliMCParticle *mcp = dynamic_cast<AliMCParticle *>(mcTrack);
505 trackPdg = TMath::Abs(mcp->Particle()->GetPdgCode());
508 AliAODMCParticle *aodmcp = dynamic_cast<AliAODMCParticle *>(mcTrack);
509 if(!aodmcp) continue;
510 trackPdg = TMath::Abs(aodmcp->GetPdgCode());
512 if(trackPdg == pdg) // Correct identification
514 fOutput->Fill(hname, 0., recTrack->Pt());
516 else // Wrong identification
517 fOutput->Fill(hname, 1., recTrack->Pt());
521 //__________________________________________
522 void AliHFEpidQA::FillElectronLikelihoods(const TObjArray * const particles, Int_t species){
524 // Fill electron Likelihoods for the ITS, TPC and TOF
525 // Required for the calculation of the electron efficiency,
526 // pion and proton efficiency and the thresholds
529 const Char_t *detname[4] = {"ITS", "TPC", "TRD", "TOF"};
530 Char_t specname[256];
533 case AliHFEV0cuts::kRecoElectron:
534 sprintf(specname, "Electron");
536 case AliHFEV0cuts::kRecoPionK0:
537 sprintf(specname, "PionK0");
539 case AliHFEV0cuts::kRecoPionL:
540 sprintf(specname, "PionL");
542 case AliHFEV0cuts::kRecoProton:
543 sprintf(specname, "Proton");
546 AliDebug(2, Form("Species %d not investigated", species));
549 AliVParticle *recTrack = NULL;
550 // mcTrack =fMC->GetTrack(TMath::Abs(label));
552 // AliDebug(4, "MC track not available");
553 // continue; // we don't know
556 TIter trackIter(particles);
558 Double_t quantities[2];
559 Double_t pidProbs[5];
561 while((recTrack = dynamic_cast<AliVParticle *>(trackIter()))){
562 if(!TString(recTrack->IsA()->GetName()).CompareTo("AliESDtrack")){
564 AliESDtrack *esdTrack = dynamic_cast<AliESDtrack *>(recTrack);
565 if(!esdTrack) continue;
566 status = esdTrack->GetStatus();
568 //TPC momentum and likelihoods
570 pTPC = esdTrack->GetInnerParam() ? esdTrack->GetInnerParam()->P() : esdTrack->P();
571 Bool_t mcFound = kFALSE;
573 Int_t label = esdTrack->GetLabel();
574 AliMCParticle *mcTrack = dynamic_cast<AliMCParticle *>(fMC->GetTrack(label));
575 Int_t pdg = GetPDG(species);
578 trackPdg = TMath::Abs(mcTrack->Particle()->GetPdgCode());
580 if(pdg == trackPdg) mcFound = kTRUE;
582 quantities[0] = pTPC;
583 Bool_t detFlagSet = kFALSE;
584 for(Int_t idet = 0; idet < 4; idet++){
585 Char_t histname[256], histnameMC[256];
586 sprintf(histname, "h%s_El_like_%s", detname[idet], specname);
587 sprintf(histnameMC, "h%s_El_like_MC_%s", detname[idet], specname);
589 case kITS: esdTrack->GetITSpid(pidProbs);
590 detFlagSet = status & AliESDtrack::kITSpid;
592 case kTPC: esdTrack->GetTPCpid(pidProbs);
593 detFlagSet = status & AliESDtrack::kTPCpid;
595 case kTRD: esdTrack->GetTRDpid(pidProbs);
596 detFlagSet = status & AliESDtrack::kTRDpid;
598 case kTOF: esdTrack->GetTOFpid(pidProbs);
599 detFlagSet = status & AliESDtrack::kTOFpid;
602 quantities[1] = pidProbs[AliPID::kElectron];
603 // in case of TRD require 6 PID tracklets
604 if(kTRD == idet && esdTrack->GetTRDntrackletsPID() != 6) continue;
606 fOutput->Fill(histname, quantities[0], quantities[1]);
608 fOutput->Fill(histnameMC, quantities[0], quantities[1]);
617 //__________________________________________
618 void AliHFEpidQA::FillPIDresponse(const TObjArray * const particles, Int_t species){
620 // Fill the PID response of different detectors to V0 daughter particles
622 Char_t hname[256] = "";
623 Char_t hname2[256] = "";
624 Char_t hname3[256] = "";
626 const Char_t *typeName[5] = {"Electron", "PionK0", "PionL", "Kaon", "Proton"};
627 const Int_t typePID[5] = {0, 2, 2, 3, 4};
631 // 0) species, 1) momentum, 2) DCA xy, 3) DCA z
633 // 5) TPC Ncls 6) TPC signal 7) TPC nSigma,
634 // 8) TRD Ntrk, 9) TRD Ncls, 10) TRD dEdx,
639 Int_t run = fEvent->GetRunNumber();
641 AliVParticle *recTrack = NULL;
642 TIter trackIter(particles);
643 while((recTrack = dynamic_cast<AliVParticle *>(trackIter()))){
644 for(Int_t i=0; i<12; ++i) data[i] = -99.;
646 if(!TString(recTrack->IsA()->GetName()).CompareTo("AliESDtrack")){
648 AliESDtrack *esdTrack = dynamic_cast<AliESDtrack *>(recTrack);
649 if(!esdTrack) continue;
651 // for the PID THnSparse
653 data[1] = esdTrack->P();
654 Float_t impactR = -1.;
655 Float_t impactZ = -1.;
656 esdTrack->GetImpactParameters(impactR, impactZ);
659 data[11] = 0; // initialize the TOF pid cut on elecgrons to false
660 // use ONLY tracks with PID flag TRUE
662 status = esdTrack->GetStatus();
668 fOutput->Fill("hITS_kFlags", 5., species);
669 if(status & AliESDtrack::kITSin) fOutput->Fill("hITS_kFlags", 1., species);
670 if(status & AliESDtrack::kITSout) fOutput->Fill("hITS_kFlags", 2., species);
671 if(status & AliESDtrack::kITSrefit) fOutput->Fill("hITS_kFlags", 3., species);
672 if(status & AliESDtrack::kITSpid) fOutput->Fill("hITS_kFlags", 4., species);
674 fOutput->Fill("hTPC_kFlags", 5., species);
675 if(status & AliESDtrack::kTPCin) fOutput->Fill("hTPC_kFlags", 1., species);
676 if(status & AliESDtrack::kTPCout) fOutput->Fill("hTPC_kFlags", 2., species);
677 if(status & AliESDtrack::kTPCrefit) fOutput->Fill("hTPC_kFlags", 3., species);
678 if(status & AliESDtrack::kTPCpid) fOutput->Fill("hTPC_kFlags", 4., species);
680 fOutput->Fill("hTRD_kFlags", 5., species);
681 if(status & AliESDtrack::kTRDin) fOutput->Fill("hTRD_kFlags", 1., species);
682 if(status & AliESDtrack::kTRDout) fOutput->Fill("hTRD_kFlags", 2., species);
683 if(status & AliESDtrack::kTRDrefit) fOutput->Fill("hTRD_kFlags", 3., species);
684 if(status & AliESDtrack::kTRDpid) fOutput->Fill("hTRD_kFlags", 4., species);
686 fOutput->Fill("hTOF_kFlags", 5., species);
687 if(status & AliESDtrack::kTOFin) fOutput->Fill("hTOF_kFlags", 1., species);
688 if(status & AliESDtrack::kTOFout) fOutput->Fill("hTOF_kFlags", 2., species);
689 if(status & AliESDtrack::kTOFrefit) fOutput->Fill("hTOF_kFlags", 3., species);
690 if(status & AliESDtrack::kTOFpid) fOutput->Fill("hTOF_kFlags", 4., species);
696 if(status & AliESDtrack::kITSpid){
697 Double_t p = esdTrack->P();
700 //Double_t itsSignal = esdTrack->GetITSsignal();
703 Double_t dEdxSamples[4];
704 esdTrack->GetITSdEdxSamples(dEdxSamples);
706 Double_t dEdxSum = 0.;
707 sprintf(hname, "hITS_dEdx_%s", typeName[species]);
708 for(Int_t i=0; i<4; ++i){
709 if(dEdxSamples[i] > 0){
711 fOutput->Fill(hname, i+1, p, dEdxSamples[i]);
712 dEdxSum += dEdxSamples[i];
715 if(4 == nSamples)fOutput->Fill(hname, 0, p, dEdxSum);
716 fOutput->Fill("hITS_dEdx_nSamples", nSamples);
718 Double_t signal = esdTrack->GetITSsignal();
719 sprintf(hname, "hITS_Signal_%s", typeName[species]);
720 fOutput->Fill(hname, p, signal);
723 // ITS number of signas
724 Double_t nsigma = fESDpid->NumberOfSigmasITS(esdTrack,(AliPID::EParticleType)typePID[species]);
725 sprintf(hname, "hITS_nSigma_%s", typeName[species]);
726 fOutput->Fill(hname, p, nsigma);
729 Double_t itsPID[5] = {-1, -1, -1, -1, -1};
730 esdTrack->GetITSpid(itsPID);
731 Int_t ix = GetMaxPID(itsPID);
732 sprintf(hname, "hITS_PID_p_%s", typeName[species]);
733 fOutput->Fill(hname, p, ix);
739 if(status & AliESDtrack::kTPCpid){
740 // Make TPC clusters Plot
741 data[5] = esdTrack->GetTPCNcls();
742 FillTPCinfo(esdTrack, species);
744 Double_t p = esdTrack->GetInnerParam() ? esdTrack->GetInnerParam()->P() : esdTrack->P();
746 Double_t dEdx = esdTrack->GetTPCsignal();
747 sprintf(hname, "hTPC_dEdx_%s", typeName[species]);
748 fOutput->Fill(hname, p, dEdx);
751 //TPC number of sigmas
752 Double_t nsigma = fESDpid->NumberOfSigmasTPC(esdTrack,(AliPID::EParticleType)typePID[species]);
753 sprintf(hname, "hTPC_nSigma_%s", typeName[species]);
754 fOutput->Fill(hname, p, nsigma);
758 sprintf(hname, "hTPC_PID_p_%s", typeName[species]);
759 Double_t tpcPID[5] = {-1, -1, -1, -1, -1};
760 esdTrack->GetTPCpid(tpcPID);
761 Int_t ix = GetMaxPID(tpcPID);
762 fOutput->Fill(hname, p, ix);
769 if(status & AliESDtrack::kTRDpid){
770 Double_t p = esdTrack->GetOuterParam() ? esdTrack->GetOuterParam()->P() : esdTrack->P();
772 // TRD number of tracklets
773 Int_t ntrk = esdTrack->GetTRDntrackletsPID();
774 sprintf(hname, "hTRD_trk_%s", typeName[species]);
775 fOutput->Fill(hname, p, ntrk);
779 sprintf(hname, "hTRD_PID_p_%s", typeName[species]);
780 Double_t trdPID[5] = {-1., -1., -1., -1., -1};
781 esdTrack->GetTRDpid(trdPID);
782 Int_t ix = GetMaxPID(trdPID);
783 fOutput->Fill(hname, p, ix);
785 Int_t ncls = esdTrack->GetTRDncls();
786 sprintf(hname, "hTRD_cls_%s", typeName[species]);
787 fOutput->Fill(hname, p, ncls);
790 // TRD - per tracklet - dEdx per, likelihood
791 sprintf(hname, "hTRD_Nslc_%s", typeName[species]);
792 sprintf(hname2, "hTRD_slc_%s", typeName[species]);
793 sprintf(hname3, "hTRD_dEdx_%s", typeName[species]);
794 Int_t nSlices = esdTrack->GetNumberOfTRDslices();
795 Double_t sumTot = 0.;
797 for(Int_t l=0; l< 6; ++l){
798 Double_t trkData[7] = {-1.,-1, -1, -1, -1, -1, -1};
799 trkData[0] = species;
806 for(Int_t s=0; s<nSlices; ++s){
807 Double_t slice = esdTrack->GetTRDslice(l, s);
811 fOutput->Fill(hname2, p, s);
816 fOutput->Fill(hname, p, not0);
817 fOutput->Fill(hname3, p, sum);
822 // lkelihoods per layer
823 if(not0Tot > 0 && fNNref){
824 Double_t likelihoods[5] = {-1., -1., -1., -1., -1};
825 TRDlikeTracklet(l, esdTrack, likelihoods);
826 trkData[6] = likelihoods[0];
827 //printf(" -D: species: %i, P; %f : %f, s: %f\n", species, p, likelihoods[0], s);
829 if(not0Tot) fOutput->Fill("hTRDtracklets", trkData);
831 // average dEx per number of tracklets
833 data[10] = sumTot / not0Tot;
840 if(status & AliESDtrack::kTOFpid){
841 Double_t p = esdTrack->GetOuterParam() ? esdTrack->GetOuterParam()->P() : esdTrack->P();
842 Double_t t0 = fESDpid->GetTOFResponse().GetStartTime(esdTrack->P());
845 sprintf(hname, "hTOF_beta_%s", typeName[species]);
846 Float_t beta = TOFbeta(esdTrack);
847 fOutput->Fill(hname, p, beta);
848 fOutput->Fill("hTOF_beta_all", p, beta);
850 Double_t nsigma = fESDpid->NumberOfSigmasTOF(esdTrack,(AliPID::EParticleType)typePID[species], t0);
851 sprintf(hname, "hTOF_nSigma_%s", typeName[species]);
852 fOutput->Fill(hname, p, nsigma);
853 if(beta > 0.97 && beta < 1.03){
858 sprintf(hname, "hTOF_PID_p_%s", typeName[species]);
859 Double_t tofPID[5] = {-1., -1., -1., -1., -1};
860 esdTrack->GetTOFpid(tofPID);
861 Int_t ix = GetMaxPID(tofPID);
862 fOutput->Fill(hname, p, ix);
865 // - distribution of (time - t0 - pion_time)
867 esdTrack->GetIntegratedTimes(times);
868 Double_t tItrackL = esdTrack->GetIntegratedLength();
869 Double_t tTOFsignal = esdTrack->GetTOFsignal();
870 Double_t dT = tTOFsignal - t0 - times[2];
871 fOutput->Fill("hTOF_qa_TmT0mT", run*1.0, dT);
872 fOutput->Fill("hTOF_qa_length", run*1.0, tItrackL);
876 // temporary - the PIDsparse needs rebuilding
877 //fOutput->Fill("PIDsparse", data);
879 // AOD - comming soon
883 }// .. tracks in TObjArray
887 //__________________________________________
888 void AliHFEpidQA:: CheckEvent(){
890 // check some event variables
893 // check the T0 as a function of run number (less than one bin per number
894 Double_t t0 = fESDpid->GetTOFResponse().GetTimeZero();
895 Int_t run = fEvent->GetRunNumber();
896 Double_t data[2] = {run*1.0, t0*1000.};
897 fOutput->Fill("hEvent_T0", data);
901 //__________________________________________
902 TList *AliHFEpidQA::GetOutput(){
904 // Getter for Output histograms
906 return fOutput->GetList();
909 //__________________________________________
910 TList *AliHFEpidQA::GetV0pidQA(){
912 // Getter for V0 PID QA histograms
914 return fV0pid->GetListOfQAhistograms();
917 //__________________________________________
918 TList *AliHFEpidQA::GetV0pidMC(){
920 // Getter for V0 PID QA histograms
923 return fV0pidMC->GetListOfQAhistograms();
927 //__________________________________________
928 void AliHFEpidQA::RecalculateTRDpid(AliESDtrack * /*track*/, Double_t * /*pidProbs*/) const{
929 // fTRDpidResponse->MakePID(track);
930 // track->GetTRDpid(pidProbs);
933 //__________________________________________
934 void AliHFEpidQA::RecalculateTRDpid(AliAODTrack * /*track*/, Double_t * /*pidProbs*/) const{
935 // fTRDpidResponse->MakePID(track, pidProbs);
937 //___________________________________________________________________
938 Float_t AliHFEpidQA::TOFbeta(AliESDtrack * const track) const {
939 // computes the TOF beta
940 Double_t l = track->GetIntegratedLength(); // cm
941 Double_t t = track->GetTOFsignal();
942 Double_t t0 = fESDpid->GetTOFResponse().GetTimeZero(); // ps
944 //printf("-D: l: %f, t: %f, t0: %f\n", l, t, t0);
946 if(l < 360. || l > 800.) return 0.;
947 if(t <= 0.) return 0.;
948 if(t0 >999990.0) return 0.;
951 t -= t0; // subtract the T0
954 t *= 1e-12; //ps -> s
958 Float_t beta = v / TMath::C();
962 //____________________________________________
963 Int_t AliHFEpidQA::GetMaxPID(const Double_t *pidProbs) const {
965 // return the index of maximal PID probability
969 for(Int_t i=0; i<5; ++i){
970 if(pidProbs[i] > tmp){
977 //_____________________________________________
978 Int_t AliHFEpidQA::GetPDG(Int_t species){
980 // return the PDG particle code
986 case AliHFEV0cuts::kRecoElectron:
987 pdg = TMath::Abs(kElectron);
989 case AliHFEV0cuts::kRecoPionK0:
990 pdg = TMath::Abs(kPiPlus);
992 case AliHFEV0cuts::kRecoPionL:
993 pdg = TMath::Abs(kPiPlus);
995 case AliHFEV0cuts::kRecoProton:
996 pdg = TMath::Abs(kProton);
998 default: // non investigated species
999 AliDebug(3, "Species not recognised");
1007 //_____________________________________________
1008 TObjArray * AliHFEpidQA::MakeTrackList(const TObjArray *tracks) const {
1010 // convert list of AliHFEV0Info into a list of AliVParticle
1012 TObjArray *output = new TObjArray;
1013 TIter trackInfos(tracks);
1014 AliHFEV0info *trackInfo = NULL;
1015 while((trackInfo = dynamic_cast<AliHFEV0info *>(trackInfos())))
1016 output->Add(trackInfo->GetTrack());
1021 //_____________________________________________
1022 TObjArray * AliHFEpidQA::MakeCleanListElectrons(const TObjArray *electrons) const {
1024 // Cleanup electron sample using TPC PID
1025 // PID requirement will allways be implemented to the pair
1028 TObjArray *tracks = new TObjArray;
1029 TIter candidates(electrons);
1030 AliESDEvent *esd; AliAODEvent *aod;
1031 AliHFEV0info *hfetrack;
1032 // const Double_t kSigmaTight = 1.;
1033 // const Double_t kSigmaLoose = 4.;
1034 const Double_t kSigmaTight = 2.;
1035 const Double_t kSigmaLoose = 2.;
1036 const Double_t shift = 0.57;
1037 if((esd = dynamic_cast<AliESDEvent *>(fEvent))){
1038 AliESDtrack *track = NULL, *partnerTrack = NULL;
1039 while((hfetrack = dynamic_cast<AliHFEV0info *>(candidates()))){
1040 if(!hfetrack) continue;
1041 track = dynamic_cast<AliESDtrack *>(hfetrack->GetTrack());
1042 if(!track) continue;
1043 partnerTrack = esd->GetTrack(hfetrack->GetPartnerID());
1044 Double_t nSigmaTrack = TMath::Abs(fESDpid->NumberOfSigmasTPC(track, AliPID::kElectron) - shift);
1045 Double_t nSigmaPartner = TMath::Abs(fESDpid->NumberOfSigmasTPC(partnerTrack, AliPID::kElectron) - shift);
1046 if((nSigmaTrack < kSigmaTight && nSigmaPartner < kSigmaLoose) || (nSigmaTrack < kSigmaLoose && nSigmaPartner < kSigmaTight))
1050 aod = dynamic_cast<AliAODEvent *>(fEvent);
1051 if(!aod) return NULL;
1052 //AliAODTrack *track = NULL, *partnerTrack = NULL;
1053 while((hfetrack = dynamic_cast<AliHFEV0info *>(candidates()))){
1054 if(!hfetrack) continue;
1055 //track = dynamic_cast<AliAODTrack *>(hfetrack->GetTrack());
1056 //partnerTrack = aod->GetTrack(hfetrack->GetPartnerID());
1057 // will be coming soon
1062 //___________________________________________________________
1063 void AliHFEpidQA::CheckTenderV0pid(const TObjArray * const particles, Int_t species){
1066 // retrieve the status bits from the TObject used to flag
1067 // the V0 daughter tracks and return the found PID
1068 // 0 - electron, 1 - pion, 2 - proton
1071 const Int_t id[5] = {0, 1, 1, -1, 2}; // convert AliHFEpid to simple 0, 1, 2
1073 AliVParticle *recTrack = NULL;
1074 TIter trackIter(particles);
1075 while((recTrack = dynamic_cast<AliVParticle *>(trackIter()))){
1076 if(!TString(recTrack->IsA()->GetName()).CompareTo("AliESDtrack")){
1078 AliESDtrack *track = dynamic_cast<AliESDtrack *>(recTrack);
1079 if(!track) continue;
1080 Int_t tPID = GetTenderV0pid(track);
1081 fOutput->Fill("h_tender_check_01", id[species]*1.0, tPID);
1082 fOutput->Fill("h_tender_check_02", id[species], id[species]*1.0, tPID);
1086 }//.. iterate of tracks
1088 //___________________________________________________________
1089 Int_t AliHFEpidQA::GetTenderV0pid(AliESDtrack * const track){
1091 // retrieve the PID nformation stored in the status flags by the train tender
1102 if(track->TestBit(2<<14)){
1106 if(track->TestBit(2<<15)){
1110 if(track->TestBit(2<<16)){
1116 AliWarning("V0 track labeled multiple times by the V0 tender");
1123 //___________________________________________________________
1124 Double_t AliHFEpidQA::TRDlikeTracklet(Int_t layer, AliESDtrack * const track, Double_t *likelihood){
1126 // compute the TRD electron likelihoods for 1 tracklet
1127 // based on teh AliTRDpidRecalculator in train/until/tender
1128 // returns sum of the likelihoods (which should be 1)
1131 const Double_t cScaleGain = 1./ 16000.;
1132 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
1134 if(!track) return kFALSE;
1135 Float_t p = track->GetTRDmomentum(layer); // momentum for a tracklet in the ESDtrack
1136 if(p < 0) return kFALSE;
1138 Int_t mombin = TRDmomBin(p); // momentum bin
1139 if(mombin < 0) return -1.;
1140 Float_t dEdxTRDsum = 0; // dEdxTRDsum for checking if tracklet is available
1141 Float_t dEdxTRD[8]; // dEdx for a tracklet in the ESD slices
1142 Double_t ddEdxTRD[8]; // dEdx as Double_t for TMultiLayerPerceptron::Evaluate()
1144 Double_t prob[AliPID::kSPECIES]; // probabilities for all species in all layers
1146 for(Int_t is = 0; is < AliPID::kSPECIES; is++){
1147 likelihood[is] = 0.2; // init probabilities
1153 for(Int_t islice = 0; islice<8; islice++){
1154 dEdxTRD[islice]=0.; // init dE/dx
1155 ddEdxTRD[islice]=0.; // init dE/dx
1156 dEdxTRD[islice]=track->GetTRDslice(layer,islice); // get the dE/dx values
1157 dEdxTRDsum += dEdxTRD[islice];
1158 ddEdxTRD[islice]=(Double_t)dEdxTRD[islice]*cScaleGain; // rescale dE/dx
1161 for(Int_t is = 0; is < AliPID::kSPECIES; is++){
1162 Double_t probloc1, probloc2;
1163 if(mombin == 0 && mombin < pBins[0]){ // calculate PID for p > 0.6 GeV/c
1164 prob[is] = fNet[mombin]->Evaluate(is, ddEdxTRD);
1166 else if(mombin == 10 && mombin >= pBins[10]){ // calculate PID for p >= 10.0 GeV/c
1167 prob[is] = fNet[mombin]->Evaluate(is, ddEdxTRD);
1169 else{ // standard calculation
1170 Int_t mombin1 = 0, mombin2 = 0; // lower and upper momentum bin
1171 if(p < pBins[mombin]) {mombin1 = mombin -1; mombin2 = mombin;}
1172 if(p >= pBins[mombin]) {mombin1 = mombin; mombin2 = mombin+1;}
1173 probloc1 = fNet[mombin1]->Evaluate(is, ddEdxTRD);
1174 probloc2 = fNet[mombin2]->Evaluate(is, ddEdxTRD);
1175 // weighting of the probability with regard to the track momentum
1176 prob[is] = probloc1 + (probloc2-probloc1)*(p-pBins[mombin1])/(pBins[mombin2]-pBins[mombin1]);
1178 likelihood[is] = prob[is];
1179 sum += likelihood[is];
1184 //__________________________________________________________________________
1185 Int_t AliHFEpidQA::TRDmomBin(Double_t p) const {
1187 // compute the momentum bin position
1190 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
1192 Int_t pBin1 = -1; // check bin1
1193 Int_t pBin2 = -1; // check bin2
1195 if(p < 0) return -1; // return -1 if momentum < 0
1196 if(p < pBins[0]) return 0; // smallest momentum bin
1197 if(p >= pBins[10]) return 10; // largest momentum bin
1200 // calculate momentum bin for non extremal momenta
1201 for(Int_t iMomBin = 1; iMomBin < 11; iMomBin++){
1202 if(p < pBins[iMomBin]){
1203 pBin1 = iMomBin - 1;
1209 if(p - pBins[pBin1] >= pBins[pBin2] - p){
1221 //__________________________________________________________________________