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 #include <TClonesArray.h>
18 #include <TObjArray.h>
21 #include <TGraphErrors.h>
26 #include <TParticle.h>
29 #include "AliAnalysisManager.h"
30 #include "AliESDEvent.h"
31 #include "AliESDkink.h"
32 #include "AliMCEvent.h"
33 #include "AliESDInputHandler.h"
34 #include "AliMCEventHandler.h"
36 #include "AliESDtrack.h"
37 #include "AliMCParticle.h"
40 #include "AliTrackReference.h"
42 #include "AliTRDcheckESD.h"
44 ClassImp(AliTRDcheckESD)
46 const Int_t AliTRDcheckESD::fgkNgraphs = 4;
47 const Float_t AliTRDcheckESD::fgkxTPC = 290.;
48 const Float_t AliTRDcheckESD::fgkxTOF = 365.;
50 //____________________________________________________________________
51 AliTRDcheckESD::AliTRDcheckESD():
52 AliAnalysisTask("checkESD", "ESD checker for TRD info")
59 // Default constructor
62 DefineInput(0, TChain::Class());
63 DefineOutput(0, TObjArray::Class());
66 //____________________________________________________________________
67 AliTRDcheckESD::~AliTRDcheckESD()
75 //____________________________________________________________________
76 void AliTRDcheckESD::ConnectInputData(Option_t *)
79 // Link the Input Data
81 TTree *tree = dynamic_cast<TChain*>(GetInputData(0));
82 if(tree) tree->SetBranchStatus("Tracks", 1);
84 AliESDInputHandler *esdH = dynamic_cast<AliESDInputHandler*>(AliAnalysisManager::GetAnalysisManager()->GetInputEventHandler());
85 fESD = esdH ? esdH->GetEvent() : 0x0;
88 AliMCEventHandler *mcH = dynamic_cast<AliMCEventHandler*>(AliAnalysisManager::GetAnalysisManager()->GetMCtruthEventHandler());
89 fMC = mcH ? mcH->MCEvent() : 0x0;
92 //____________________________________________________________________
93 void AliTRDcheckESD::CreateOutputObjects()
96 // Create Output Containers (TObjectArray containing 1D histograms)
98 OpenFile(0, "RECREATE");
102 //____________________________________________________________________
103 TGraphErrors* AliTRDcheckESD::GetGraph(Int_t id, Option_t*)
105 Bool_t kBUILD = 1, // build graph if none found
106 kCLEAR = 1; // clear existing graph
108 const Char_t *name[] = {
109 "Geo", "Trk", "Pid", "Ref"
111 const Char_t *title[] = {
112 "TRD geometrical efficiency (TRDin/TPCout)"
113 ,"TRD tracking efficiency (TRDout/TRDin)"
114 ,"TRD PID efficiency (TRDpid/TRDin)"
115 ,"TRD refit efficiency (TRDrefit/TRDin)"
117 const Int_t ngr = sizeof(name)/sizeof(Char_t*);
118 if(ngr != fgkNgraphs){
119 AliWarning("No of graphs defined different from definition");
123 TObjArray *res = 0x0;
124 if(!(res = (TObjArray*)fHistos->At(kResults)) ||
125 (id < 0 || id >= ngr)){
126 AliWarning("Graph missing.");
130 TGraphErrors *g = 0x0;
131 if((g = dynamic_cast<TGraphErrors*>(res->At(id)))){
132 if(kCLEAR) for(Int_t ip=g->GetN(); ip--;) g->RemovePoint(ip);
135 g = new TGraphErrors();
136 g->SetNameTitle(name[id], title[id]);
143 //____________________________________________________________________
144 void AliTRDcheckESD::Exec(Option_t *){
149 AliError("ESD event missing.");
153 // Get MC information if available
154 AliStack * fStack = 0x0;
157 AliWarning("MC event missing");
160 if(!(fStack = fMC->Stack())){
161 AliWarning("MC stack missing");
166 Bool_t TRDin(0), TRDout(0), TRDpid(0);
168 AliESDtrack *esdTrack = 0x0;
169 for(Int_t itrk = 0; itrk < fESD->GetNumberOfTracks(); itrk++){
170 TRDin=0;TRDout=0;TRDpid=0;
171 esdTrack = fESD->GetTrack(itrk);
173 // if(esdTrack->GetNcls(1)) nTPC++;
174 // if(esdTrack->GetNcls(2)) nTRD++;
177 ULong_t status = esdTrack->GetStatus();
178 //PrintStatus(status);
180 // define TPC out tracks
181 if(!Bool_t(status & AliESDtrack::kTPCout)) continue;
182 if(esdTrack->GetKinkIndex(0) > 0) continue;
185 Double_t p[AliPID::kSPECIES]; esdTrack->GetTRDpid(p);
187 //esdTrack->GetTRDntrackletsPID();
189 // look at external track param
190 const AliExternalTrackParam *op = esdTrack->GetOuterParam();
194 op->Global2LocalPosition(xyz, op->GetAlpha());
195 //printf("op @ X[%7.3f]\n", xyz[0]);
199 if(!HasMC()) continue;
201 Int_t fLabel = esdTrack->GetLabel();
202 if(TMath::Abs(fLabel) > fStack->GetNtrack()) continue;
205 AliMCParticle *mcParticle = 0x0;
206 if(!(mcParticle = fMC->GetTrack(TMath::Abs(fLabel)))){
207 AliWarning(Form("MC particle missing. Label[ %d].", fLabel));
211 AliTrackReference *ref = 0x0;
212 Int_t nRefs = mcParticle->GetNumberOfTrackReferences();
214 AliWarning(Form("Track refs missing. Label[%d].", fLabel));
219 ref = mcParticle->GetTrackReference(iref);
220 if(ref->LocalX() > fgkxTPC) break;
225 //TParticle *tParticle = mcParticle->Particle();
226 //Int_t fPdg = tParticle->GetPdgCode();
227 // reject secondaries
228 //if(!tParticle->IsPrimary()) continue;
231 if(ref->LocalX() > fgkxTOF){ // track skipping TRD fiducial volume
232 ref = mcParticle->GetTrackReference(TMath::Max(iref-1, 0));
235 if(esdTrack->GetNcls(2)) TRDout=1;
236 if(esdTrack->GetTRDntrackletsPID()>=4) TRDpid=1;
238 } else { // track stopped in TPC
239 ref = mcParticle->GetTrackReference(TMath::Max(iref-1, 0));
242 Float_t pt = ref->Pt();
244 TH2 *h = (TH2I*)fHistos->At(kTRDstat);
245 if(status & AliESDtrack::kTPCout) h->Fill(pt, kTPCout);
246 if(/*status & AliESDtrack::k*/TRDin) h->Fill(pt, kTRDin);
247 if(/*status & AliESDtrack::k*/TRDout){
248 ((TH1*)fHistos->At(kNCl))->Fill(esdTrack->GetNcls(2));
249 h->Fill(pt, kTRDout);
251 if(/*status & AliESDtrack::k*/TRDpid) h->Fill(pt, kTRDpid);
252 if(status & AliESDtrack::kTRDrefit) h->Fill(pt, kTRDref);
254 PostData(0, fHistos);
257 //____________________________________________________________________
258 TObjArray* AliTRDcheckESD::Histos()
260 if(fHistos) return fHistos;
262 fHistos = new TObjArray(kNhistos);
263 //fHistos->SetOwner(kTRUE);
267 // clusters per tracklet
268 if(!(h = (TH1I*)gROOT->FindObject("hNCl"))){
269 h = new TH1I("hNCl", "Clusters per TRD track", 100, 0., 200.);
270 h->GetXaxis()->SetTitle("N_{cl}^{TRD}");
271 h->GetYaxis()->SetTitle("entries");
273 fHistos->AddAt(h, kNCl);
275 // status bits histogram
276 if(!(h = (TH2I*)gROOT->FindObject("hTRDstat"))){
277 h = new TH2I("hTRDstat", "TRD status bits", 100, 0., 20., kNbits, .5, kNbits+.5);
278 h->GetXaxis()->SetTitle("p_{T} [GeV/c]");
279 h->GetYaxis()->SetTitle("status bits");
280 h->GetZaxis()->SetTitle("entries");
282 fHistos->AddAt(h, kTRDstat);
285 TObjArray *res = new TObjArray();
286 res->SetName("Results");
287 fHistos->AddAt(res, kResults);
291 //____________________________________________________________________
292 Bool_t AliTRDcheckESD::Load(const Char_t *filename, const Char_t *name)
294 if(!TFile::Open(filename)){
295 AliWarning(Form("Couldn't open file %s.", filename));
299 if(!(o = (TObjArray*)gFile->Get(name ? name : GetName()))){
300 AliWarning("Missing histogram container.");
303 fHistos = (TObjArray*)o->Clone(GetName());
308 //____________________________________________________________________
309 void AliTRDcheckESD::Terminate(Option_t *)
311 TObjArray *res = 0x0;
312 if(!(res = (TObjArray*)fHistos->At(kResults))){
313 AliWarning("Graph container missing.");
316 if(!res->GetEntriesFast()) res->Expand(fgkNgraphs);
318 // geometrical efficiency
319 TH2I *h2 = (TH2I*)fHistos->At(kTRDstat);
320 TH1 *h1[2] = {0x0, 0x0};
321 h1[0] = h2->ProjectionX("px0", kTPCout, kTPCout);
322 h1[1] = h2->ProjectionX("px1", kTRDin, kTRDin);
323 Process(h1, GetGraph(0));
325 // tracking efficiency
326 h1[0] = h2->ProjectionX("px0", kTRDin, kTRDin);
327 h1[1] = h2->ProjectionX("px1", kTRDout, kTRDout);
328 Process(h1, GetGraph(1));
331 //h1[0] = h2->ProjectionX("px0", kTRDin, kTRDin);
332 h1[1] = h2->ProjectionX("px1", kTRDpid, kTRDpid);
333 Process(h1, GetGraph(2));
336 //h1[0] = h2->ProjectionX("px0", kTRDin, kTRDin);
337 h1[1] = h2->ProjectionX("px1", kTRDref, kTRDref);
338 Process(h1, GetGraph(3));
341 //____________________________________________________________________
342 void AliTRDcheckESD::Process(TH1 **h1, TGraphErrors *g)
344 Int_t n1 = 0, n2 = 0, ip=0;
347 TAxis *ax = h1[0]->GetXaxis();
348 for(Int_t ib=1; ib<=ax->GetNbins(); ib++){
349 if(!(n1 = (Int_t)h1[0]->GetBinContent(ib))) continue;
350 n2 = (Int_t)h1[1]->GetBinContent(ib);
351 eff = n2/Float_t(n1);
354 g->SetPoint(ip, ax->GetBinCenter(ib), eff);
355 g->SetPointError(ip, 0., n2 ? eff*TMath::Sqrt(1./n1+1./n2) : 0.);
359 //____________________________________________________________________
360 void AliTRDcheckESD::PrintStatus(ULong_t status)
362 printf("ITS[i(%d) o(%d) r(%d)] TPC[i(%d) o(%d) r(%d) p(%d)] TRD[i(%d) o(%d) r(%d) p(%d) s(%d)] HMPID[o(%d) p(%d)]\n"
363 ,Bool_t(status & AliESDtrack::kITSin)
364 ,Bool_t(status & AliESDtrack::kITSout)
365 ,Bool_t(status & AliESDtrack::kITSrefit)
366 ,Bool_t(status & AliESDtrack::kTPCin)
367 ,Bool_t(status & AliESDtrack::kTPCout)
368 ,Bool_t(status & AliESDtrack::kTPCrefit)
369 ,Bool_t(status & AliESDtrack::kTPCpid)
370 ,Bool_t(status & AliESDtrack::kTRDin)
371 ,Bool_t(status & AliESDtrack::kTRDout)
372 ,Bool_t(status & AliESDtrack::kTRDrefit)
373 ,Bool_t(status & AliESDtrack::kTRDpid)
374 ,Bool_t(status & AliESDtrack::kTRDStop)
375 ,Bool_t(status & AliESDtrack::kHMPIDout)
376 ,Bool_t(status & AliESDtrack::kHMPIDpid)