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 //------------------------------
17 // Analysis task for quality-assurance
18 // of forward detectors ESD
20 // 12/06/2009 cvetan.cheshkov@cern.ch
21 //------------------------------
31 #include "TParticle.h"
32 #include "AliESDEvent.h"
34 #include "AliESDcascade.h"
35 #include "AliESDMuonTrack.h"
36 #include "AliESDCaloCluster.h"
38 #include "AliMCEvent.h"
40 #include "AliGenEventHeader.h"
42 #include "AliESDVZERO.h"
44 #include "AliAnaFwdDetsQA.h"
46 ClassImp(AliAnaFwdDetsQA)
48 AliAnaFwdDetsQA::AliAnaFwdDetsQA():
49 AliAnalysisTaskSE("AliAnaFwdDetsQA"),
68 // Default constructor
69 // Define input and output slots here
70 // Input slot #0 works with a TChain
71 DefineInput(0, TChain::Class());
72 // Output slot #1 TList
73 DefineOutput(1, TList::Class());
76 AliAnaFwdDetsQA::AliAnaFwdDetsQA(const char* name):
77 AliAnalysisTaskSE(name),
97 AliInfo("Constructor AliAnaFwdDetsQA");
98 // Define input and output slots here
99 // Input slot #0 works with a TChain
100 DefineInput(0, TChain::Class());
101 // Output slot #1 TList
102 DefineOutput(1, TList::Class());
105 TH1F * AliAnaFwdDetsQA::CreateHisto(const char* name, const char* title,Int_t nBins,
106 Double_t xMin, Double_t xMax,
107 const char* xLabel, const char* yLabel)
109 // create a histogram
110 TH1F* result = new TH1F(name, title, nBins, xMin, xMax);
111 result->SetOption("E");
112 if (xLabel) result->GetXaxis()->SetTitle(xLabel);
113 if (yLabel) result->GetYaxis()->SetTitle(yLabel);
114 result->SetMarkerStyle(kFullCircle);
118 TH1F *AliAnaFwdDetsQA::CreateEffHisto(const TH1F* hGen, const TH1F* hRec)
120 // create an efficiency histogram
121 Int_t nBins = hGen->GetNbinsX();
122 TH1F* hEff = (TH1F*) hGen->Clone("hEff");
124 hEff->SetStats(kFALSE);
125 hEff->SetMinimum(0.);
126 hEff->SetMaximum(110.);
127 hEff->GetYaxis()->SetTitle("#epsilon [%]");
129 for (Int_t iBin = 0; iBin <= nBins; iBin++) {
130 Double_t nGenEff = hGen->GetBinContent(iBin);
131 Double_t nRecEff = hRec->GetBinContent(iBin);
133 Double_t eff = nRecEff/nGenEff;
134 hEff->SetBinContent(iBin, 100. * eff);
135 Double_t error = sqrt(eff*(1.-eff) / nGenEff);
136 if (error == 0) error = 0.0001;
137 hEff->SetBinError(iBin, 100. * error);
140 hEff->SetBinContent(iBin, -100.);
141 hEff->SetBinError(iBin, 0);
148 Bool_t AliAnaFwdDetsQA::FitHisto(TH1* histo, Double_t& res, Double_t& resError)
150 // fit a gaussian to a histogram
151 static TF1* fitFunc = new TF1("fitFunc", "gaus");
152 fitFunc->SetLineWidth(2);
153 fitFunc->SetFillStyle(0);
154 Double_t maxFitRange = 2;
156 if (histo->Integral() > 50) {
157 Float_t mean = histo->GetMean();
158 Float_t rms = histo->GetRMS();
159 fitFunc->SetRange(mean - maxFitRange*rms, mean + maxFitRange*rms);
160 fitFunc->SetParameters(mean, rms);
161 histo->Fit(fitFunc, "QRI0");
162 histo->GetFunction("fitFunc")->ResetBit(1<<9);
163 res = TMath::Abs(fitFunc->GetParameter(2));
164 resError = TMath::Abs(fitFunc->GetParError(2));
170 void AliAnaFwdDetsQA::UserCreateOutputObjects()
173 AliInfo("AliAnaFwdDetsQA::UserCreateOutputObjects");
174 // Create output container
175 fListOfHistos = new TList();
177 fT0vtxRec = CreateHisto("hT0vtxRec", "Z vertex reconstructed with T0", 100, -25, 25, "Z_{vtx} [cm]", "");
178 fT0time = CreateHisto("hT0time", "Time0 reconstruction with T0", 5000, 10000, 20000, "t_{0} [ps]", "");
179 fT0time2 = CreateHisto("hT0time2", "Time0 reconstruction with T0 (mult > 10)", 5000, 10000, 20000, "t_{0} [ps]", "");
180 fT0mult = CreateHisto("hT0mult", "Total reconstructed multiplicity in T0", 100, -0.5, 99.5, "Multiplicity", "");
181 fT0vtxRes = CreateHisto("hT0vtxRes", "T0 Z vertex resolution", 100, -25, 25, "Delta(Z_{vtx}) [cm]", "");
182 fT0ampl = CreateHisto("hT0ampl","T0 multiplicity in single channel (all T0 channels)",400,-0.5,99.5);
184 fT0vtxRecGen = new TH2F("hT0vtxRecGen", "T0 reconstructed vs generated Z vertex", 100, -25, 25, 100, -25, 25);
185 fT0vtxRecGen->GetXaxis()->SetTitle("Generated Z vertex");
186 fT0vtxRecGen->GetYaxis()->SetTitle("Reconstructed Z vertex");
187 fT0vtxRecGen->SetMarkerStyle(kFullCircle);
188 fT0vtxRecGen->SetMarkerSize(0.4);
190 fV0a = CreateHisto("hV0a","Number of fired PMTs (V0A)",65,-0.5,64.5);
191 fV0c = CreateHisto("hV0c","Number of fired PMTs (V0C)",65,-0.5,64.5);
192 fV0multA = CreateHisto("hV0multA","Total reconstructed multiplicity (V0A)",100,0.,1000.);
193 fV0multC = CreateHisto("hV0multC","Total reconstructed multiplicity (V0C)",100,0.,1000.);
194 fV0ampl = CreateHisto("hV0ampl","V0 multiplicity in single channel (all V0 channels)",400,-0.5,99.5);
196 fV0multAcorr = new TH2F("hV0multAcorr", "Reconstructed vs generated (primaries only) multiplicity (V0A)",100,0.,500.,100,0.,1000.);
197 fV0multAcorr->GetXaxis()->SetTitle("# of primaries in V0A acceptance");
198 fV0multAcorr->GetYaxis()->SetTitle("Reconstructed mutiplicity in V0A");
199 fV0multCcorr = new TH2F("hV0multCcorr", "Reconstructed vs generated (primaries only) multiplicity (V0C)",100,0.,500.,100,0.,1000.);
200 fV0multCcorr->GetXaxis()->SetTitle("# of primaries in V0C acceptance");
201 fV0multCcorr->GetYaxis()->SetTitle("Reconstructed mutiplicity in V0C");
203 fV0Acorr = new TH2F("hV0Acorr", "Number of fired PMTs vs generated (primaries only) multiplicity (V0A)",100,0.,500.,65,-0.5,64.5);
204 fV0Acorr->GetXaxis()->SetTitle("# of primaries in V0A acceptance");
205 fV0Acorr->GetYaxis()->SetTitle("Number of fired PMTs in V0A");
206 fV0Ccorr = new TH2F("hV0Ccorr", "Number of fired PMTs vs generated (primaries only) multiplicity (V0C)",100,0.,500.,65,-0.5,64.5);
207 fV0Ccorr->GetXaxis()->SetTitle("# of primaries in V0C acceptance");
208 fV0Ccorr->GetYaxis()->SetTitle("Number of fired PMTs in V0C");
210 fListOfHistos->Add(fT0vtxRec);
211 fListOfHistos->Add(fT0time);
212 fListOfHistos->Add(fT0mult);
213 fListOfHistos->Add(fT0vtxRecGen);
214 fListOfHistos->Add(fT0vtxRes);
215 fListOfHistos->Add(fV0a);
216 fListOfHistos->Add(fV0c);
217 fListOfHistos->Add(fV0multA);
218 fListOfHistos->Add(fV0multC);
219 fListOfHistos->Add(fV0multAcorr);
220 fListOfHistos->Add(fV0multCcorr);
221 fListOfHistos->Add(fV0Acorr);
222 fListOfHistos->Add(fV0Ccorr);
223 fListOfHistos->Add(fT0ampl);
224 fListOfHistos->Add(fV0ampl);
225 fListOfHistos->Add(fT0time2);
228 void AliAnaFwdDetsQA::UserExec(Option_t */*option*/)
231 AliMCEvent* mcEvent = MCEvent();
233 Printf("ERROR: Could not retrieve MC event");
237 //Primary vertex needed
239 mcEvent->GenEventHeader()->PrimaryVertex(mcvtx);
241 AliStack *stack = mcEvent->Stack();
243 Printf("ERROR: Could not retrieve MC stack");
249 for (Int_t iTracks = 0; iTracks < mcEvent->GetNumberOfTracks(); iTracks++) {//Check this loop again
250 if (!stack->IsPhysicalPrimary(iTracks)) continue;
251 AliMCParticle* track = mcEvent->GetTrack(iTracks);
252 TParticle* particle = track->Particle();
253 if (!particle) continue;
254 if (track->Charge() == 0) continue;
255 Double_t eta = particle->Eta();
256 if (eta > 2.8 && eta < 5.1) {
259 if (eta > -3.7 && eta < -1.7) {
265 AliVEvent* event = InputEvent();
267 Printf("ERROR: Could not retrieve event");
271 AliESDEvent* esd = dynamic_cast<AliESDEvent*>(event);
272 const AliESDTZERO* esdT0 = esd->GetESDTZERO();
273 Double_t t0zvtx = esdT0->GetT0zVertex();
274 Double_t t0time = esdT0->GetT0();
276 fT0vtxRec->Fill(t0zvtx);
277 fT0time->Fill(t0time);
278 fT0vtxRecGen->Fill(mcvtx[2],t0zvtx);
280 fT0vtxRes->Fill(t0zvtx - mcvtx[2]);
283 for(Int_t i = 0; i < 24; i++) {
284 t0mult += esdT0->GetT0amplitude()[i];
285 fT0ampl->Fill(esdT0->GetT0amplitude()[i]);
288 fT0mult->Fill(t0mult);
290 fT0time2->Fill(t0time);
292 AliESDVZERO* esdV0 = esd->GetVZEROData();
293 fV0a->Fill(esdV0->GetNbPMV0A());
294 fV0c->Fill(esdV0->GetNbPMV0C());
295 fV0multA->Fill(esdV0->GetMTotV0A());
296 fV0multC->Fill(esdV0->GetMTotV0C());
298 fV0multAcorr->Fill((Float_t)nV0A,esdV0->GetMTotV0A());
299 fV0multCcorr->Fill((Float_t)nV0C,esdV0->GetMTotV0C());
300 fV0Acorr->Fill((Float_t)nV0A,(Float_t)esdV0->GetNbPMV0A());
301 fV0Ccorr->Fill((Float_t)nV0C,(Float_t)esdV0->GetNbPMV0C());
303 for(Int_t i = 0; i < 64; i++) {
304 fV0ampl->Fill(esdV0->GetMultiplicity(i));
307 PostData(1, fListOfHistos);
310 void AliAnaFwdDetsQA::Terminate(Option_t *)
312 fListOfHistos = dynamic_cast<TList*>(GetOutputData(1));
313 if (!fListOfHistos) {
314 Printf("ERROR: fListOfHistos not available");
318 fT0vtxRec = dynamic_cast<TH1F*>(fListOfHistos->At(0));
319 fT0time = dynamic_cast<TH1F*>(fListOfHistos->At(1));
320 fT0mult = dynamic_cast<TH1F*>(fListOfHistos->At(2));
321 fT0vtxRecGen = dynamic_cast<TH2F*>(fListOfHistos->At(3));
322 fT0vtxRes = dynamic_cast<TH1F*>(fListOfHistos->At(4));
324 fV0a = dynamic_cast<TH1F*>(fListOfHistos->At(5));
325 fV0c = dynamic_cast<TH1F*>(fListOfHistos->At(6));
326 fV0multA = dynamic_cast<TH1F*>(fListOfHistos->At(7));
327 fV0multC = dynamic_cast<TH1F*>(fListOfHistos->At(8));
328 fV0multAcorr = dynamic_cast<TH2F*>(fListOfHistos->At(9));
329 fV0multCcorr = dynamic_cast<TH2F*>(fListOfHistos->At(10));
330 fV0Acorr = dynamic_cast<TH2F*>(fListOfHistos->At(11));
331 fV0Ccorr = dynamic_cast<TH2F*>(fListOfHistos->At(12));
333 fT0ampl = dynamic_cast<TH1F*>(fListOfHistos->At(13));
334 fV0ampl = dynamic_cast<TH1F*>(fListOfHistos->At(14));
335 fT0time2 = dynamic_cast<TH1F*>(fListOfHistos->At(15));
338 // draw the histograms if not in batch mode
339 if (!gROOT->IsBatch()) {
341 fT0vtxRec->DrawCopy("E");
343 fT0time->DrawCopy("E");
345 fT0mult->DrawCopy("E");
347 fT0vtxRes->DrawCopy("E");
349 fT0vtxRecGen->DrawCopy();
355 fV0multA->DrawCopy("E");
357 fV0multC->DrawCopy("E");
359 fV0multAcorr->DrawCopy();
361 fV0multCcorr->DrawCopy();
363 fV0Acorr->DrawCopy();
365 fV0Ccorr->DrawCopy();
367 fT0ampl->DrawCopy("E");
369 fV0ampl->DrawCopy("E");
371 fT0time2->DrawCopy("E");
374 // write the output histograms to a file
375 TFile* outputFile = TFile::Open("FwdDetsQA.root", "recreate");
376 if (!outputFile || !outputFile->IsOpen())
378 Error("AliAnaFwdDetsQA", "opening output file FwdDetsQA.root failed");
384 fT0vtxRecGen->Write();
393 fV0multAcorr->Write();
394 fV0multCcorr->Write();
403 Info("AliAnaFwdDetsQA", "Successfully finished");