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4 * Author: The ALICE Off-line Project. *
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14 **************************************************************************/
19 // Task for Efficiency studies
20 // Used for testing classes AliHFEcontainer and AliHFEfilter
21 // Creates Efficiency Histograms
24 // Markus Fasel <M.Fasel@gsi.de>
29 #include <TGraphErrors.h>
32 #include <TIterator.h>
34 #include <TObjArray.h>
37 #include "AliAnalysisManager.h"
38 #include "AliCFAcceptanceCuts.h"
39 #include "AliCFTrackIsPrimaryCuts.h"
40 #include "AliCFContainer.h"
41 #include "AliCFEffGrid.h"
42 #include "AliESDEvent.h"
43 #include "AliHFEcollection.h"
44 #include "AliHFEcontainer.h"
45 #include "AliHFEcutStep.h"
46 #include "AliHFEefficiency.h"
47 #include "AliHFEextraCuts.h"
48 #include "AliHFEtrackFilter.h"
49 #include "AliHFEtools.h"
50 #include "AliMCEvent.h"
51 #include "AliMCEventHandler.h"
53 ClassImp(AliHFEefficiency)
55 AliHFEefficiency::AliHFEefficiency():
59 fAcceptanceCuts(NULL),
65 // Default constructor
69 AliHFEefficiency::AliHFEefficiency(const Char_t *name):
70 AliAnalysisTaskSE(name),
73 fAcceptanceCuts(NULL),
81 DefineOutput(1, AliHFEcontainer::Class());
82 DefineOutput(2, TList::Class());
87 AliHFEefficiency::~AliHFEefficiency(){
91 if(fFilter) delete fFilter;
92 if(fEfficiency) delete fEfficiency;
93 if(fAcceptanceCuts) delete fAcceptanceCuts;
94 if(fOutput) delete fOutput;
97 void AliHFEefficiency::UserCreateOutputObjects(){
99 // Create the output objects
101 fEfficiency = new AliHFEcontainer("Efficiency");
102 fEfficiency->SetNumberOfVariables(4);
103 // InitializeVariables
104 fEfficiency->SetVariableName(0, "pt");
105 fEfficiency->MakeLogarithmicBinning(0, 40, 0.1, 10);
106 fEfficiency->SetVariableName(1, "Eta");
107 fEfficiency->MakeLinearBinning(1, 20, -0.9, 0.9);
108 fEfficiency->SetVariableName(2, "phi");
109 fEfficiency->MakeLinearBinning(2 , 18, 0, 2 * TMath::Pi());
110 fEfficiency->SetVariableName(3, "Charge");
111 fEfficiency->MakeLinearBinning(3, 2, -1.1, 1.1);
113 fEfficiency->CreateContainer("MCFilter", "Efficiency for MC Studies", 2);
114 AliCFContainer *cont = fEfficiency->GetCFContainer("MCFilter");
115 cont->SetStepTitle(0, "MC Signal");
116 cont->SetStepTitle(1, "MC Signal in acceptance");
118 fFilter = new AliHFEtrackFilter("testfilter");
119 fFilter->GenerateCutSteps();
120 fFilter->InitCF(fEfficiency);
121 fMCcut = fFilter->GetMCSignalCuts();
123 AliHFEcutStep *hfeTRD = fFilter->GetCutStep("HFETRD");
124 AliHFEextraCuts *hfecuts = dynamic_cast<AliHFEextraCuts *>(hfeTRD->GetCut("HFETRDCuts"));
125 if(hfecuts) hfecuts->SetMinTrackletsTRD(4);
127 AliHFEcutStep *hfeITS = fFilter->GetCutStep("HFEITS");
128 AliHFEextraCuts *hfeitscuts = dynamic_cast<AliHFEextraCuts *>(hfeITS->GetCut("HFEPixelsCuts"));
129 if(hfeitscuts)hfeitscuts->SetRequireITSpixel(AliHFEextraCuts::kFirst);
131 AliHFEcutStep *primary = fFilter->GetCutStep("Primary");
132 AliCFTrackIsPrimaryCuts *primcuts = dynamic_cast<AliCFTrackIsPrimaryCuts *>(primary->GetCut("PrimaryCuts"));
134 primcuts->SetMaxDCAToVertexXY(3);
135 primcuts->SetMaxDCAToVertexZ(5);
138 fAcceptanceCuts = new AliCFAcceptanceCuts("Acceptance", "MC Acceptance Cuts");
139 fAcceptanceCuts->SetMinNHitITS(3);
140 fAcceptanceCuts->SetMinNHitTPC(2);
141 fAcceptanceCuts->SetMinNHitTRD(0);
143 // create additional histos for testing purpose
144 fOutput = new AliHFEcollection("histos", "QA histograms");
145 fOutput->CreateTH1F("hNtracks","Number of Tracks per Event", 100, 0, 100);
146 fOutput->CreateTH1F("hPt","Pt of the tracks", 40, 0.1, 10, 0);
147 fOutput->CreateTH1F("kinkIndex", "Kink Index", 400, -200, 200);
148 fOutput->CreateTH1F("itspixel", "ITS PIXEL", 2, 0, 2);
149 fOutput->CreateTH1F("mcmother", "Mother PDG", 1000, -500, 500);
150 fOutput->CreateTH2F("ptres", "Pt Resolution", 40, 0.1, 10, 200, -1.5, 1.5, 0);
153 void AliHFEefficiency::UserExec(Option_t *){
156 // Filter track, fill Efficiency container
158 AliESDEvent *esdevent = dynamic_cast<AliESDEvent *>(fInputEvent);
160 AliError("ESD Event required");
163 fEfficiency->NewEvent();
164 fFilter->SetRecEvent(fInputEvent);
166 AliMCEventHandler *mcH = dynamic_cast<AliMCEventHandler *>(AliAnalysisManager::GetAnalysisManager()->GetMCtruthEventHandler());
167 if(mcH &&(!mcH->InitOk())) return;
168 if(mcH &&(!mcH->TreeK())) return;
169 if(mcH &&(!mcH->TreeTR())) return;
170 fFilter->SetMC(fMCEvent);
173 fFilter->FilterTracks(esdevent);
174 TObjArray *tracks = fFilter->GetFilteredTracks();
175 TIterator *iter = tracks->MakeIterator();
176 fOutput->Fill("hNtracks", tracks->GetEntriesFast());
177 AliESDtrack *track = NULL;
178 while((track = dynamic_cast<AliESDtrack *>(iter->Next()))){
179 fOutput->Fill("hPt", track->Pt());
180 fOutput->Fill("kinkIndex", track->GetKinkIndex(0));
181 if(TESTBIT(track->GetITSClusterMap(), 0))
182 fOutput->Fill("itspixel",1);
184 fOutput->Fill("itspixel",0);
186 AliMCParticle *mctrack = dynamic_cast<AliMCParticle *>(fMCEvent->GetTrack(TMath::Abs(track->GetLabel())));
188 Int_t motherLabel = mctrack->Particle()->GetFirstMother();
190 AliMCParticle *mother = dynamic_cast<AliMCParticle *>(fMCEvent->GetTrack(motherLabel));
191 if(mother)fOutput->Fill("mcmother", mother->Particle()->GetPdgCode());
193 fOutput->Fill("ptres", mctrack->Pt(), (track->Pt() - mctrack->Pt())/mctrack->Pt());
199 PostData(1, fEfficiency);
200 PostData(2, fOutput->GetList());
203 void AliHFEefficiency::Terminate(Option_t *){
207 fEfficiency = dynamic_cast<AliHFEcontainer *>(GetOutputData(1));
209 AliError("No Output data available");
213 if(!IsRunningTerminate()) return;
216 TList *l = dynamic_cast<TList *>(GetOutputData(2));
217 if(l) DrawPtResolution(l);
220 void AliHFEefficiency::FilterMC(){
224 Double_t cont[4] = {0., 0., 0., 0.};
225 AliMCParticle *track = NULL;
226 for(Int_t itrack = 0; itrack < fMCEvent->GetNumberOfTracks(); itrack++){
227 track = dynamic_cast<AliMCParticle *>(fMCEvent->GetTrack(itrack));
229 if(!fMCcut->IsSelected(track)) continue;
230 cont[0] = track->Pt();
231 cont[1] = track->Eta();
232 cont[2] = track->Phi();
233 cont[3] = track->Charge()/3;
234 //AliMCParticle *mother = dynamic_cast<AliMCParticle *>(fMCEvent->GetTrack(track->Particle()->GetFirstMother()));
235 //if(TMath::Abs(mother->Particle()->GetPdgCode()) != 443) continue;
236 fEfficiency->FillCFContainer("MCFilter", 0, cont);
237 if(!fAcceptanceCuts->IsSelected(track)) continue;
238 fEfficiency->FillCFContainer("MCFilter", 1, cont);
242 void AliHFEefficiency::Load(const char* filename){
244 // Load results for post processing
246 TFile *input = TFile::Open(filename);
247 AliHFEcontainer *cin = dynamic_cast<AliHFEcontainer *>(input->Get("Efficiency"));
248 if(cin) fEfficiency = dynamic_cast<AliHFEcontainer *>(cin->Clone());
253 void AliHFEefficiency::PostProcess(){
255 // Calculate Efficiencies
257 fEfficiency->Print();
259 // Prepare containers
260 AliCFContainer *crec = fEfficiency->MakeMergedCFContainer("merged", "Merged Container", "MCFilter:testfilter_container_signal");
261 AliCFContainer *cmc = fEfficiency->MakeMergedCFContainer("merged", "Merged Container", "MCFilter:testfilter_container_signalMC");
262 AliCFEffGrid *gridRec = new AliCFEffGrid("effrec", "Efficiency Calculation using rec vars", *crec);
263 AliCFEffGrid *gridMC = new AliCFEffGrid("effmc", "Efficiency Calculation using mc vars", *cmc);
265 TCanvas *ctmp = NULL;
266 for(Int_t ivar = 0; ivar < crec->GetNVar(); ivar++){
267 ctmp = new TCanvas(Form("cEffSignal%s", crec->GetVarTitle(ivar)), Form("Signal Efficiency (%s)", crec->GetVarTitle(ivar)));
269 DrawSignalEfficiency(gridRec, crec, ivar);
271 ctmp = new TCanvas(Form("cCutEff%s", crec->GetVarTitle(ivar)), Form("Cut Step Efficiency (%s)", crec->GetVarTitle(ivar)));
273 DrawCutEfficiency(gridRec, crec, ivar);
275 ctmp = new TCanvas(Form("cEffSignalMC%s", crec->GetVarTitle(ivar)), Form("Signal Efficiency (%s, MC)", crec->GetVarTitle(ivar)));
277 DrawSignalEfficiency(gridMC, cmc, ivar);
279 ctmp = new TCanvas(Form("cCutEffMC%s", crec->GetVarTitle(ivar)), Form("Cut Step Efficiency (%s, MC)", crec->GetVarTitle(ivar)));
281 DrawCutEfficiency(gridMC, cmc, ivar);
284 CalculatePTsmearing();
292 void AliHFEefficiency::DrawSignalEfficiency(AliCFEffGrid *eff, AliCFContainer *cont, Int_t var){
294 // Efficiency of a cut step with respect to the signal
297 Bool_t kFirst = kTRUE;
298 TLegend *leg = new TLegend(0.5, 0.7, 0.89, 0.89);
299 for(Int_t istep = 1; istep < cont->GetNStep(); istep++){
300 eff->CalculateEfficiency(istep, 0);
301 hEff = eff->Project(var);
302 hEff->SetTitle(Form("Signal Efficiency (%s)", cont->GetVarTitle(var)));
303 hEff->GetYaxis()->SetRangeUser(0., 1.6);
304 hEff->GetYaxis()->SetTitle("Efficiency");
305 hEff->SetStats(kFALSE);
306 hEff->SetMarkerStyle(20+istep);
307 hEff->SetMarkerColor(kBlue - 5 + istep);
308 hEff->Draw(kFirst ? "ep" : "epsame");
310 leg->AddEntry(hEff, cont->GetStepTitle(istep), "p");
312 leg->SetBorderSize(0);
313 leg->SetFillStyle(0);
318 void AliHFEefficiency::DrawCutEfficiency(AliCFEffGrid *eff, AliCFContainer *cont, Int_t var){
320 // Efficiency of a cut step with respect to the previous one
322 Bool_t kFirst = kTRUE;
324 TLegend *leg = new TLegend(0.5, 0.7, 0.89, 0.89);
326 Int_t start = 0, length = 0;
327 for(Int_t istep = 1; istep < cont->GetNStep(); istep++){
328 eff->CalculateEfficiency(istep, istep -1);
329 hEff = eff->Project(var);
330 effTitle = hEff->GetTitle();
331 start = effTitle.Index("projected"); length = effTitle.Length() - start;
332 effTitle.Remove(start - 1, length + 1);
333 effTitle.ReplaceAll("Efficiency: ", "");
334 hEff->SetTitle(Form("Cut Efficiency (%s)", cont->GetVarTitle(var)));
335 hEff->GetYaxis()->SetRangeUser(0., 1.6);
336 hEff->GetYaxis()->SetTitle("Efficiency");
337 hEff->SetStats(kFALSE);
338 hEff->SetMarkerStyle(20+istep);
339 hEff->SetMarkerColor(kBlue - 5 + istep);
340 hEff->Draw(kFirst ? "ep" : "epsame");
342 leg->AddEntry(hEff, effTitle.Data(), "p");
344 leg->SetBorderSize(0);
345 leg->SetFillStyle(0);
350 void AliHFEefficiency::CalculatePTsmearing(){
352 // Efficiency of a cut step with respect to the same cut step filled with MC
355 AliCFContainer *cont = fEfficiency->MakeMergedCFContainer("merged", "Merged Container", "testfilter_container_signal:testfilter_container_signalMC");
356 AliCFEffGrid *grid = new AliCFEffGrid("effc", "Efficiency Calculation", *cont);
357 Bool_t kFirst = kTRUE;
359 TCanvas *c2 = new TCanvas("cSmear", "pT modification");
361 TLegend *leg1 = new TLegend(0.5, 0.7, 0.89, 0.89);
362 Int_t nStep = cont->GetNStep()/2;
363 for(Int_t istep = 0; istep < nStep; istep++){
364 grid->CalculateEfficiency(istep, istep + nStep);
365 hEff = grid->Project(0);
366 hEff->SetStats(kFALSE);
367 hEff->SetMarkerStyle(20+istep);
368 hEff->SetMarkerColor(kBlue - 5 + istep);
369 hEff->Draw(kFirst ? "ep" : "epsame");
371 leg1->AddEntry(hEff, cont->GetStepTitle(istep), "p");
380 void AliHFEefficiency::DrawPtResolution(const TList * const l){
382 // Draw pt resolution
384 TH2 *h2 = dynamic_cast<TH2 *>(l->FindObject("ptres"));
386 TGraphErrors *mean = new TGraphErrors(h2->GetNbinsX());
387 TGraphErrors *rms = new TGraphErrors(h2->GetNbinsX());
389 Double_t pt = 0., pterr = 0., mymean = 0., myrms = 0., mymeanerr = 0., myrmserr = 0.;
391 for(Int_t imom = 1; imom <= h2->GetXaxis()->GetLast(); imom++){
392 pt = h2->GetXaxis()->GetBinCenter(imom);
393 pterr = h2->GetXaxis()->GetBinWidth(imom)/2.;
394 htmp = h2->ProjectionY("py", imom, imom);
395 mymean = htmp->GetMean();
396 myrms = htmp->GetRMS();
397 mymeanerr = htmp->GetMeanError();
398 myrmserr = htmp->GetRMSError();
400 mean->SetPoint(imom -1, pt, mymean);
401 rms->SetPoint(imom -1, pt, myrms);
402 mean->SetPointError(imom-1,pterr,mymeanerr);
403 rms->SetPointError(imom-1,pterr,myrmserr);
406 TCanvas *c1 = new TCanvas("cPtShift", "pT Shift");
408 mean->SetMarkerStyle(22);
409 mean->SetMarkerColor(kBlue);
411 rms->SetMarkerStyle(22);
412 rms->SetMarkerColor(kBlack);
414 TLegend *leg = new TLegend(0.5, 0.7, 0.89, 0.89);
415 leg->AddEntry(mean, "Mean", "lp");
416 leg->AddEntry(rms, "RMS", "lp");