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 // Task for Efficiency studies
17 // Used for testing classes AliHFEcontainer and AliHFEfilter
18 // Creates Efficiency Histograms
21 // Markus Fasel <M.Fasel@gsi.de>
26 #include <TGraphErrors.h>
29 #include <TIterator.h>
31 #include <TObjArray.h>
34 #include "AliCFAcceptanceCuts.h"
35 #include "AliCFContainer.h"
36 #include "AliCFEffGrid.h"
37 #include "AliESDEvent.h"
38 #include "AliHFEcollection.h"
39 #include "AliHFEcontainer.h"
40 #include "AliHFEcutStep.h"
41 #include "AliHFEefficiency.h"
42 #include "AliHFEextraCuts.h"
43 #include "AliHFEtrackFilter.h"
44 #include "AliHFEtools.h"
45 #include "AliMCEvent.h"
47 ClassImp(AliHFEefficiency)
49 AliHFEefficiency::AliHFEefficiency():
53 fAcceptanceCuts(NULL),
59 // Default constructor
63 AliHFEefficiency::AliHFEefficiency(const Char_t *name):
64 AliAnalysisTaskSE(name),
67 fAcceptanceCuts(NULL),
75 DefineOutput(1, AliHFEcontainer::Class());
76 DefineOutput(2, TList::Class());
79 AliHFEefficiency::~AliHFEefficiency(){
83 if(fFilter) delete fFilter;
84 if(fEfficiency) delete fEfficiency;
85 if(fAcceptanceCuts) delete fAcceptanceCuts;
86 if(fOutput) delete fOutput;
89 void AliHFEefficiency::UserCreateOutputObjects(){
91 // Create the output objects
93 fEfficiency = new AliHFEcontainer("Efficiency");
94 fEfficiency->SetNumberOfVariables(4);
95 // InitializeVariables
96 fEfficiency->SetVariableName(0, "pt");
97 fEfficiency->MakeLogarithmicBinning(0, 40, 0.1, 10);
98 fEfficiency->SetVariableName(1, "Eta");
99 fEfficiency->MakeLinearBinning(1, 20, -0.9, 0.9);
100 fEfficiency->SetVariableName(2, "phi");
101 fEfficiency->MakeLinearBinning(2 , 18, 0, 2 * TMath::Pi());
102 fEfficiency->SetVariableName(3, "Charge");
103 fEfficiency->MakeLinearBinning(3, 2, -1.1, 1.1);
105 fEfficiency->CreateContainer("MCFilter", "Efficiency for MC Studies", 2);
106 AliCFContainer *cont = fEfficiency->GetCFContainer("MCFilter");
107 cont->SetStepTitle(0, "MC Signal");
108 cont->SetStepTitle(1, "MC Signal in acceptance");
110 fFilter = new AliHFEtrackFilter("testfilter");
111 fFilter->GenerateCutSteps();
112 fFilter->InitCF(fEfficiency);
113 fMCcut = fFilter->GetMCSignalCuts();
115 AliHFEcutStep *hfeTRD = fFilter->GetCutStep("HFETRD");
116 AliHFEextraCuts *hfecuts = dynamic_cast<AliHFEextraCuts *>(hfeTRD->GetCut("HFETRDCuts"));
117 hfecuts->SetMinTrackletsTRD(4);
119 AliHFEcutStep *hfeITS = fFilter->GetCutStep("HFEITS");
120 AliHFEextraCuts *hfeitscuts = dynamic_cast<AliHFEextraCuts *>(hfeITS->GetCut("HFEPixelsCuts"));
121 hfeitscuts->SetRequireITSpixel(AliHFEextraCuts::kFirst);
123 fAcceptanceCuts = new AliCFAcceptanceCuts("Acceptance", "MC Acceptance Cuts");
124 fAcceptanceCuts->SetMinNHitITS(3);
125 fAcceptanceCuts->SetMinNHitTPC(2);
126 fAcceptanceCuts->SetMinNHitTRD(0);
128 // create additional histos for testing purpose
129 fOutput = new AliHFEcollection("histos", "QA histograms");
130 fOutput->CreateTH1F("hNtracks","Number of Tracks per Event", 100, 0, 100);
131 fOutput->CreateTH1F("hPt","Pt of the tracks", 40, 0.1, 10);
132 fOutput->BinLogAxis("hPt", 0);
133 fOutput->CreateTH1F("kinkIndex", "Kink Index", 400, -200, 200);
134 fOutput->CreateTH1F("itspixel", "ITS PIXEL", 2, 0, 2);
135 fOutput->CreateTH1F("mcmother", "Mother PDG", 1000, -500, 500);
136 fOutput->CreateTH2F("ptres", "Pt Resolution", 40, 0.1, 10, 200, -1.5, 1.5);
137 fOutput->BinLogAxis("ptres", 0);
140 void AliHFEefficiency::UserExec(Option_t *){
143 // Filter track, fill Efficiency container
145 fEfficiency->NewEvent();
146 fFilter->SetRecEvent(fInputEvent);
148 fFilter->SetMC(fMCEvent);
151 fFilter->FilterTracks(dynamic_cast<AliESDEvent *>(fInputEvent));
152 TObjArray *tracks = fFilter->GetFilteredTracks();
153 TIterator *iter = tracks->MakeIterator();
154 fOutput->Fill("hNtracks", tracks->GetEntriesFast());
155 AliESDtrack *track = NULL;
156 while((track = dynamic_cast<AliESDtrack *>(iter->Next()))){
157 fOutput->Fill("hPt", track->Pt());
158 fOutput->Fill("kinkIndex", track->GetKinkIndex(0));
159 if(TESTBIT(track->GetITSClusterMap(), 0))
160 fOutput->Fill("itspixel",1);
162 fOutput->Fill("itspixel",0);
163 AliMCParticle *mctrack = dynamic_cast<AliMCParticle *>(fMCEvent->GetTrack(TMath::Abs(track->GetLabel())));
164 AliMCParticle *mother = dynamic_cast<AliMCParticle *>(fMCEvent->GetTrack(mctrack->Particle()->GetFirstMother()));
165 fOutput->Fill("mcmother", mother->Particle()->GetPdgCode());
166 fOutput->Fill("ptres", mctrack->Pt(), (track->Pt() - mctrack->Pt())/mctrack->Pt());
170 PostData(1, fEfficiency);
171 PostData(2, fOutput->GetList());
174 void AliHFEefficiency::Terminate(Option_t *){
178 fEfficiency = dynamic_cast<AliHFEcontainer *>(GetOutputData(1));
179 if(!fEfficiency) return;
182 TList *l = dynamic_cast<TList *>(GetOutputData(2));
186 void AliHFEefficiency::FilterMC(){
190 Double_t cont[4] = {0., 0., 0., 0.};
191 AliMCParticle *track = NULL;
192 for(Int_t itrack = 0; itrack < fMCEvent->GetNumberOfTracks(); itrack++){
193 track = dynamic_cast<AliMCParticle *>(fMCEvent->GetTrack(itrack));
194 if(!fMCcut->IsSelected(track)) continue;
195 cont[0] = track->Pt();
196 cont[1] = track->Eta();
197 cont[2] = track->Phi();
198 cont[3] = track->Charge()/3;
199 //AliMCParticle *mother = dynamic_cast<AliMCParticle *>(fMCEvent->GetTrack(track->Particle()->GetFirstMother()));
200 //if(TMath::Abs(mother->Particle()->GetPdgCode()) != 443) continue;
201 fEfficiency->FillCFContainer("MCFilter", 0, cont);
202 if(!fAcceptanceCuts->IsSelected(track)) continue;
203 fEfficiency->FillCFContainer("MCFilter", 1, cont);
207 void AliHFEefficiency::Load(const char* filename){
208 TFile *input = TFile::Open(filename);
209 AliHFEcontainer *cin = dynamic_cast<AliHFEcontainer *>(input->Get("Efficiency"));
210 fEfficiency = dynamic_cast<AliHFEcontainer *>(cin->Clone());
215 void AliHFEefficiency::PostProcess(){
217 // Calculate Efficiencies
219 fEfficiency->Print();
221 // Prepare containers
222 AliCFContainer *crec = fEfficiency->MakeMergedCFContainer("merged", "Merged Container", "MCFilter:testfilter_container_signal");
223 AliCFContainer *cmc = fEfficiency->MakeMergedCFContainer("merged", "Merged Container", "MCFilter:testfilter_container_signalMC");
224 AliCFEffGrid *gridRec = new AliCFEffGrid("effrec", "Efficiency Calculation using rec vars", *crec);
225 AliCFEffGrid *gridMC = new AliCFEffGrid("effmc", "Efficiency Calculation using mc vars", *cmc);
227 TCanvas *ctmp = NULL;
228 for(Int_t ivar = 0; ivar < crec->GetNVar(); ivar++){
229 ctmp = new TCanvas(Form("cEffSignal%s", crec->GetVarTitle(ivar)), Form("Signal Efficiency (%s)", crec->GetVarTitle(ivar)));
231 DrawSignalEfficiency(gridRec, crec, ivar);
233 ctmp = new TCanvas(Form("cCutEff%s", crec->GetVarTitle(ivar)), Form("Cut Step Efficiency (%s)", crec->GetVarTitle(ivar)));
235 DrawCutEfficiency(gridRec, crec, ivar);
237 ctmp = new TCanvas(Form("cEffSignalMC%s", crec->GetVarTitle(ivar)), Form("Signal Efficiency (%s, MC)", crec->GetVarTitle(ivar)));
239 DrawSignalEfficiency(gridMC, cmc, ivar);
241 ctmp = new TCanvas(Form("cCutEffMC%s", crec->GetVarTitle(ivar)), Form("Cut Step Efficiency (%s, MC)", crec->GetVarTitle(ivar)));
243 DrawCutEfficiency(gridMC, cmc, ivar);
246 CalculatePTsmearing();
254 void AliHFEefficiency::DrawSignalEfficiency(AliCFEffGrid *eff, AliCFContainer *cont, Int_t var){
256 // Efficiency of a cut step with respect to the signal
259 Bool_t kFirst = kTRUE;
260 TLegend *leg = new TLegend(0.5, 0.7, 0.89, 0.89);
261 for(Int_t istep = 1; istep < cont->GetNStep(); istep++){
262 eff->CalculateEfficiency(istep, 0);
263 hEff = eff->Project(var);
264 hEff->SetTitle(Form("Signal Efficiency (%s)", cont->GetVarTitle(var)));
265 hEff->GetYaxis()->SetRangeUser(0., 1.6);
266 hEff->GetYaxis()->SetTitle("Efficiency");
267 hEff->SetStats(kFALSE);
268 hEff->SetMarkerStyle(20+istep);
269 hEff->SetMarkerColor(kBlue - 5 + istep);
270 hEff->Draw(kFirst ? "ep" : "epsame");
272 leg->AddEntry(hEff, cont->GetStepTitle(istep), "p");
274 leg->SetBorderSize(0);
275 leg->SetFillStyle(0);
280 void AliHFEefficiency::DrawCutEfficiency(AliCFEffGrid *eff, AliCFContainer *cont, Int_t var){
282 // Efficiency of a cut step with respect to the previous one
284 Bool_t kFirst = kTRUE;
286 TLegend *leg = new TLegend(0.5, 0.7, 0.89, 0.89);
288 Int_t start = 0, length = 0;
289 for(Int_t istep = 1; istep < cont->GetNStep(); istep++){
290 eff->CalculateEfficiency(istep, istep -1);
291 hEff = eff->Project(var);
292 effTitle = hEff->GetTitle();
293 start = effTitle.Index("projected"); length = effTitle.Length() - start;
294 effTitle.Remove(start - 1, length + 1);
295 effTitle.ReplaceAll("Efficiency: ", "");
296 hEff->SetTitle(Form("Cut Efficiency (%s)", cont->GetVarTitle(var)));
297 hEff->GetYaxis()->SetRangeUser(0., 1.6);
298 hEff->GetYaxis()->SetTitle("Efficiency");
299 hEff->SetStats(kFALSE);
300 hEff->SetMarkerStyle(20+istep);
301 hEff->SetMarkerColor(kBlue - 5 + istep);
302 hEff->Draw(kFirst ? "ep" : "epsame");
304 leg->AddEntry(hEff, effTitle.Data(), "p");
306 leg->SetBorderSize(0);
307 leg->SetFillStyle(0);
312 void AliHFEefficiency::CalculatePTsmearing(){
314 // Efficiency of a cut step with respect to the same cut step filled with MC
317 AliCFContainer *cont = fEfficiency->MakeMergedCFContainer("merged", "Merged Container", "testfilter_container_signal:testfilter_container_signalMC");
318 AliCFEffGrid *grid = new AliCFEffGrid("effc", "Efficiency Calculation", *cont);
319 Bool_t kFirst = kTRUE;
321 TCanvas *c2 = new TCanvas("cSmear", "pT modification");
323 TLegend *leg1 = new TLegend(0.5, 0.7, 0.89, 0.89);
324 Int_t nStep = cont->GetNStep()/2;
325 for(Int_t istep = 0; istep < nStep; istep++){
326 grid->CalculateEfficiency(istep, istep + nStep);
327 hEff = grid->Project(0);
328 hEff->SetStats(kFALSE);
329 hEff->SetMarkerStyle(20+istep);
330 hEff->SetMarkerColor(kBlue - 5 + istep);
331 hEff->Draw(kFirst ? "ep" : "epsame");
333 leg1->AddEntry(hEff, cont->GetStepTitle(istep), "p");
342 void AliHFEefficiency::DrawPtResolution(TList *l){
344 // Draw pt resolution
346 TH2 *h2 = dynamic_cast<TH2 *>(l->FindObject("ptres"));
347 TGraphErrors *mean = new TGraphErrors(h2->GetNbinsX());
348 TGraphErrors *rms = new TGraphErrors(h2->GetNbinsX());
350 Double_t pt = 0., pterr = 0., mymean = 0., myrms = 0., mymeanerr = 0., myrmserr = 0.;
352 for(Int_t imom = 1; imom <= h2->GetXaxis()->GetLast(); imom++){
353 pt = h2->GetXaxis()->GetBinCenter(imom);
354 pterr = h2->GetXaxis()->GetBinWidth(imom)/2.;
355 htmp = h2->ProjectionY("py", imom, imom);
356 mymean = htmp->GetMean();
357 myrms = htmp->GetRMS();
358 mymeanerr = htmp->GetMeanError();
359 myrmserr = htmp->GetRMSError();
361 mean->SetPoint(imom -1, pt, mymean);
362 rms->SetPoint(imom -1, pt, myrms);
363 mean->SetPointError(imom-1,pterr,mymeanerr);
364 rms->SetPointError(imom-1,pterr,myrmserr);
367 TCanvas *c1 = new TCanvas("cPtShift", "pT Shift");
369 mean->SetMarkerStyle(22);
370 mean->SetMarkerColor(kBlue);
372 rms->SetMarkerStyle(22);
373 rms->SetMarkerColor(kBlack);
375 TLegend *leg = new TLegend(0.5, 0.7, 0.89, 0.89);
376 leg->AddEntry(mean, "Mean", "lp");
377 leg->AddEntry(rms, "RMS", "lp");