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c04c80e6 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
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 | **************************************************************************/ | |
15 | // | |
16 | // QA class for TRD PID | |
17 | // Plot Pion Efficiency at x electron efficiency | |
18 | // Calculate the threshold parametrisation and save | |
19 | // them in a root file | |
20 | // | |
21 | // Author: | |
22 | // Markus Fasel <M.Fasel@gsi.de> | |
23 | // | |
24 | #include <TAxis.h> | |
bf892a6a | 25 | #include <TBrowser.h> |
c04c80e6 | 26 | #include <TClass.h> |
27 | #include <TCanvas.h> | |
28 | #include <TF1.h> | |
29 | #include <TFile.h> | |
30 | #include <TGraph.h> | |
31 | #include <TGraphErrors.h> | |
32 | #include <THnSparse.h> | |
33 | #include <TH1.h> | |
34 | #include <TH2.h> | |
35 | #include <TIterator.h> | |
36 | #include <TLegend.h> | |
37 | #include <TList.h> | |
38 | #include <TMath.h> | |
39 | #include <TObjArray.h> | |
40 | #include <TString.h> | |
41 | ||
42 | #include "AliAODTrack.h" | |
43 | #include "AliAODPid.h" | |
44 | #include "AliESDtrack.h" | |
45 | #include "AliHFEtrdPIDqa.h" | |
46 | #include "AliHFEtools.h" | |
47 | #include "AliHFEpidTRD.h" | |
48 | #include "AliLog.h" | |
49 | ||
50 | ClassImp(AliHFEtrdPIDqa) | |
51 | ||
52 | const Double_t AliHFEtrdPIDqa::fgkElectronEff[kNElectronEffs] = {0.7,0.75, 0.8, 0.85, 0.9, 0.95}; | |
53 | //_______________________________________________________________ | |
54 | // Definition of the common binning | |
55 | const Int_t AliHFEtrdPIDqa::fgkNBinsCommon[kQuantitiesCommon] = { | |
56 | AliPID::kSPECIES + 1, // species | |
57 | 40, // p-bins | |
58 | AliESDtrack::kTRDnPlanes + 1 // tracklets including 0 | |
59 | }; | |
60 | const Double_t AliHFEtrdPIDqa::fgkMinBinCommon[kQuantitiesCommon] = { | |
61 | -1, // species | |
62 | 0.1, // p-bins | |
63 | 0 // tracklets including 0 | |
64 | }; | |
65 | ||
66 | const Double_t AliHFEtrdPIDqa::fgkMaxBinCommon[kQuantitiesCommon] = { | |
67 | AliPID::kSPECIES, // species | |
68 | 10., // p-bins | |
69 | AliESDtrack::kTRDnPlanes + 1 // tracklets including 0 | |
70 | }; | |
71 | //_______________________________________________________________ | |
72 | ||
73 | //__________________________________________________________________ | |
74 | AliHFEtrdPIDqa::AliHFEtrdPIDqa(): | |
75 | TNamed("trdPIDqa", ""), | |
76 | fTRDpid(NULL), | |
bf892a6a | 77 | fHistos(NULL), |
c04c80e6 | 78 | fPionEfficiencies(NULL), |
79 | fProtonEfficiencies(NULL), | |
80 | fKaonEfficiencies(NULL), | |
e3ae862b | 81 | fThresholds(NULL), |
e156c3bb | 82 | fShowMessage(kFALSE), |
83 | fTotalChargeInSlice0(kFALSE) | |
c04c80e6 | 84 | { |
85 | // | |
86 | // Default Constructor | |
87 | // | |
88 | } | |
89 | ||
90 | //__________________________________________________________________ | |
91 | AliHFEtrdPIDqa::AliHFEtrdPIDqa(const Char_t *name): | |
92 | TNamed(name, ""), | |
93 | fTRDpid(NULL), | |
bf892a6a | 94 | fHistos(NULL), |
c04c80e6 | 95 | fPionEfficiencies(NULL), |
96 | fProtonEfficiencies(NULL), | |
97 | fKaonEfficiencies(NULL), | |
e3ae862b | 98 | fThresholds(NULL), |
e156c3bb | 99 | fShowMessage(kFALSE), |
100 | fTotalChargeInSlice0(kFALSE) | |
c04c80e6 | 101 | { |
102 | // | |
103 | // Main Constructor | |
104 | // | |
105 | } | |
106 | ||
107 | //__________________________________________________________________ | |
108 | AliHFEtrdPIDqa::AliHFEtrdPIDqa(const AliHFEtrdPIDqa &ref): | |
109 | TNamed(ref), | |
110 | fTRDpid(NULL), | |
bf892a6a | 111 | fHistos(NULL), |
c04c80e6 | 112 | fPionEfficiencies(NULL), |
113 | fProtonEfficiencies(NULL), | |
114 | fKaonEfficiencies(NULL), | |
e3ae862b | 115 | fThresholds(NULL), |
e156c3bb | 116 | fShowMessage(kFALSE), |
117 | fTotalChargeInSlice0(ref.fTotalChargeInSlice0) | |
c04c80e6 | 118 | { |
119 | // | |
120 | // Copy constructor | |
121 | // | |
122 | ref.Copy(*this); | |
123 | } | |
124 | ||
125 | //__________________________________________________________________ | |
126 | AliHFEtrdPIDqa &AliHFEtrdPIDqa::operator=(const AliHFEtrdPIDqa &ref){ | |
127 | // | |
128 | // Assignment operator | |
129 | // | |
130 | if(this != &ref) | |
131 | ref.Copy(*this); | |
132 | return *this; | |
133 | } | |
134 | ||
135 | //__________________________________________________________________ | |
136 | AliHFEtrdPIDqa::~AliHFEtrdPIDqa(){ | |
137 | // | |
138 | // Destructor | |
139 | // | |
140 | if(fTRDpid) delete fTRDpid; | |
bf892a6a | 141 | if(fHistos) delete fHistos; |
c04c80e6 | 142 | if(fPionEfficiencies) delete fPionEfficiencies; |
143 | if(fProtonEfficiencies) delete fProtonEfficiencies; | |
144 | if(fKaonEfficiencies) delete fKaonEfficiencies; | |
145 | } | |
146 | ||
147 | //__________________________________________________________________ | |
148 | void AliHFEtrdPIDqa::Copy(TObject &ref) const{ | |
149 | // | |
150 | // Copies content of this object into object ref | |
151 | // | |
152 | TNamed::Copy(ref); | |
153 | ||
154 | AliHFEtrdPIDqa &target = dynamic_cast<AliHFEtrdPIDqa &>(ref); | |
155 | target.fTRDpid = fTRDpid; | |
e156c3bb | 156 | target.fHistos = dynamic_cast<AliHFEcollection *>(fHistos->Clone()); |
157 | target.fTotalChargeInSlice0 = fTotalChargeInSlice0; | |
c04c80e6 | 158 | } |
159 | ||
160 | //__________________________________________________________________ | |
161 | Long64_t AliHFEtrdPIDqa::Merge(TCollection *coll){ | |
162 | // | |
163 | // Merge objects | |
164 | // | |
165 | if(!coll) return 0; | |
166 | if(coll->IsEmpty()) return 1; | |
167 | ||
bf892a6a | 168 | AliHFEtrdPIDqa *refQA = NULL; |
169 | TIter it(coll); | |
c04c80e6 | 170 | TObject *o = NULL; |
171 | Long64_t count = 0; | |
bf892a6a | 172 | TList listHistos; |
173 | while((o = it())){ | |
174 | refQA = dynamic_cast<AliHFEtrdPIDqa *>(o); | |
c04c80e6 | 175 | if(!refQA) continue; |
176 | ||
bf892a6a | 177 | listHistos.Add(refQA->fHistos); |
178 | count++; | |
c04c80e6 | 179 | } |
bf892a6a | 180 | fHistos->Merge(&listHistos); |
c04c80e6 | 181 | return count+1; |
182 | } | |
183 | ||
bf892a6a | 184 | //__________________________________________________________________ |
185 | void AliHFEtrdPIDqa::Browse(TBrowser *b){ | |
186 | // | |
187 | // Enable Browser functionality | |
188 | // | |
189 | if(b){ | |
190 | // Add objects to the browser | |
191 | if(fHistos) b->Add(fHistos, fHistos->GetName()); | |
192 | if(fPionEfficiencies) b->Add(fPionEfficiencies, "Pion Efficiencies"); | |
193 | if(fProtonEfficiencies) b->Add(fProtonEfficiencies, "Proton Efficiencies"); | |
194 | if(fKaonEfficiencies) b->Add(fKaonEfficiencies, "Kaon Efficiencies"); | |
195 | if(fThresholds) b->Add(fThresholds, "Thresholds"); | |
196 | } | |
197 | } | |
198 | ||
c04c80e6 | 199 | //__________________________________________________________________ |
200 | void AliHFEtrdPIDqa::Init(){ | |
201 | // | |
202 | // Initialize Object | |
203 | // | |
bf892a6a | 204 | |
205 | fHistos = new AliHFEcollection("TRDqa", "Histos for TRD QA"); | |
c04c80e6 | 206 | |
207 | CreateLikelihoodHistogram(); | |
208 | CreateQAHistogram(); | |
209 | CreatedEdxHistogram(); | |
210 | CreateHistoTruncatedMean(); | |
211 | ||
212 | fTRDpid = new AliHFEpidTRD("QAtrdPID"); | |
213 | } | |
214 | ||
215 | //__________________________________________________________________ | |
216 | void AliHFEtrdPIDqa::CreateLikelihoodHistogram(){ | |
217 | // | |
218 | // Create Histogram for TRD Likelihood Studies | |
219 | // | |
220 | Int_t nbins[kQuantitiesLike]; memcpy(nbins, fgkNBinsCommon, sizeof(Int_t) * kQuantitiesCommon); | |
221 | nbins[kElectronLike] = 100; | |
222 | Double_t binMin[kQuantitiesLike]; memcpy(binMin, fgkMinBinCommon, sizeof(Double_t) * kQuantitiesCommon); | |
223 | Double_t binMax[kQuantitiesLike]; memcpy(binMax, fgkMaxBinCommon, sizeof(Double_t) * kQuantitiesCommon); | |
224 | binMin[kElectronLike] = 0.; | |
225 | binMax[kElectronLike] = 1.; | |
226 | ||
bf892a6a | 227 | fHistos->CreateTHnSparse("fLikeTRD","TRD Likelihood Studies", kQuantitiesLike, nbins, binMin, binMax); |
228 | fHistos->BinLogAxis("fLikeTRD", kP); | |
c04c80e6 | 229 | } |
230 | ||
231 | //__________________________________________________________________ | |
232 | void AliHFEtrdPIDqa::CreateQAHistogram(){ | |
233 | // | |
234 | // Create Histogram for Basic TRD PID QA | |
235 | // | |
236 | AliDebug(1, "Called"); | |
237 | Int_t nbins[kQuantitiesQA]; memcpy(nbins, fgkNBinsCommon, sizeof(Int_t) * kQuantitiesCommon); | |
238 | nbins[kNonZeroTrackletCharge] = AliESDtrack::kTRDnPlanes + 1; | |
239 | nbins[kNClusters] = 200; | |
240 | Double_t binMin[kQuantitiesQA]; memcpy(binMin, fgkMinBinCommon, sizeof(Double_t) * kQuantitiesCommon); | |
241 | binMin[kNonZeroTrackletCharge] = 0.; | |
242 | binMin[kNClusters] = 0.; | |
243 | Double_t binMax[kQuantitiesQA]; memcpy(binMax, fgkMaxBinCommon, sizeof(Double_t) * kQuantitiesCommon); | |
244 | binMax[kNonZeroTrackletCharge] = AliESDtrack::kTRDnPlanes + 1.; | |
245 | binMax[kNClusters] = 200.; | |
246 | ||
bf892a6a | 247 | fHistos->CreateTHnSparse("fQAtrack","TRD QA Histogram", kQuantitiesQA, nbins, binMin, binMax); |
248 | fHistos->BinLogAxis("fQAtrack", kP); | |
c04c80e6 | 249 | } |
250 | ||
251 | //__________________________________________________________________ | |
252 | void AliHFEtrdPIDqa::CreatedEdxHistogram(){ | |
253 | // | |
254 | // Create QA histogram for dEdx investigations | |
255 | // | |
256 | AliDebug(1, "Called"); | |
257 | Int_t nbins[kQuantitiesdEdx]; memcpy(nbins, fgkNBinsCommon, sizeof(Int_t) * kQuantitiesCommon); | |
258 | nbins[kdEdx] = 100; | |
3a72645a | 259 | nbins[kNclusters] = 261; |
260 | nbins[kNonZeroSlices] = 9; | |
c04c80e6 | 261 | Double_t binMin[kQuantitiesdEdx]; memcpy(binMin, fgkMinBinCommon, sizeof(Double_t) * kQuantitiesCommon); |
3a72645a | 262 | binMin[kdEdx] = 0.; |
263 | binMin[kNclusters] = 0; | |
6555e2ad | 264 | binMin[kNonZeroSlices] = 0.; |
c04c80e6 | 265 | Double_t binMax[kQuantitiesdEdx]; memcpy(binMax, fgkMaxBinCommon, sizeof(Double_t) * kQuantitiesCommon); |
266 | binMax[kdEdx] = 100000.; | |
3a72645a | 267 | binMax[kNclusters] = 260.; |
268 | binMax[kNonZeroSlices] = 8.; | |
c04c80e6 | 269 | |
bf892a6a | 270 | fHistos->CreateTHnSparse("fQAdEdx","TRD summed dEdx", kQuantitiesdEdx, nbins, binMin, binMax); |
271 | fHistos->BinLogAxis("fQAdEdx", kP); | |
272 | fHistos->Sumw2("fQAdEdx"); | |
c04c80e6 | 273 | } |
274 | ||
275 | //__________________________________________________________________ | |
276 | void AliHFEtrdPIDqa::CreateHistoTruncatedMean(){ | |
277 | // | |
278 | // Create Histogram for Basic TRD PID QA | |
279 | // | |
280 | AliDebug(1, "Called"); | |
281 | Int_t nbins[kQuantitiesTruncMean]; memcpy(nbins, fgkNBinsCommon, sizeof(Int_t) * kQuantitiesCommon); | |
282 | nbins[kTPCdEdx] = 600; | |
283 | nbins[kTRDdEdxMethod1] = 1000; | |
284 | nbins[kTRDdEdxMethod2] = 1000; | |
285 | Double_t binMin[kQuantitiesTruncMean]; memcpy(binMin, fgkMinBinCommon, sizeof(Double_t) * kQuantitiesCommon); | |
286 | binMin[kTPCdEdx] = 0.; | |
287 | binMin[kTRDdEdxMethod1] = 0.; | |
288 | binMin[kTRDdEdxMethod2] = 0.; | |
289 | Double_t binMax[kQuantitiesTruncMean]; memcpy(binMax, fgkMaxBinCommon, sizeof(Double_t) * kQuantitiesCommon); | |
290 | binMax[kTPCdEdx] = 600; | |
291 | binMax[kTRDdEdxMethod1] = 20000.; | |
292 | binMax[kTRDdEdxMethod2] = 20000.; | |
293 | ||
bf892a6a | 294 | fHistos->CreateTHnSparse("fTRDtruncMean","TRD TruncatedMean studies", kQuantitiesTruncMean, nbins, binMin, binMax); |
295 | fHistos->BinLogAxis("fTRDtruncMean", kP); | |
e156c3bb | 296 | fHistos->CreateTH2F("fTRDslicesPions","TRD dEdx per slice for Pions", 8, 0, 8, 2000, 0, 8000); |
297 | fHistos->CreateTH2F("fTRDslicesElectrons","TRD dEdx per slice for Electrons", 8, 0, 8, 2000, 0, 8000); | |
c04c80e6 | 298 | } |
299 | ||
300 | ||
301 | //__________________________________________________________________ | |
c2690925 | 302 | void AliHFEtrdPIDqa::ProcessTracks(const TObjArray * const tracks, Int_t species){ |
c04c80e6 | 303 | // |
304 | // Process Electron Tracks | |
305 | // | |
306 | if(species < -1 || species >= AliPID::kSPECIES) return; | |
c2690925 | 307 | TIter it(tracks); |
308 | const AliVTrack *track = NULL; | |
309 | while((track = dynamic_cast<const AliVTrack *>(it()))){ | |
c04c80e6 | 310 | if(track) ProcessTrack(track, species); |
311 | } | |
c04c80e6 | 312 | } |
313 | ||
314 | //__________________________________________________________________ | |
c2690925 | 315 | void AliHFEtrdPIDqa::ProcessTrack(const AliVTrack * const track, Int_t species){ |
c04c80e6 | 316 | // |
317 | // Process Single Track | |
318 | // | |
319 | if(TString(track->IsA()->GetName()).CompareTo("AliESDtrack") == 0) | |
c2690925 | 320 | ProcessTrackESD(dynamic_cast<const AliESDtrack *>(track), species); |
c04c80e6 | 321 | else if(TString(track->IsA()->GetName()).CompareTo("AliAODTrack") == 0) |
c2690925 | 322 | ProcessTrackAOD(dynamic_cast<const AliAODTrack *>(track), species); |
c04c80e6 | 323 | } |
324 | ||
325 | ||
326 | //__________________________________________________________________ | |
c2690925 | 327 | void AliHFEtrdPIDqa::ProcessTrackESD(const AliESDtrack *track, Int_t species){ |
c04c80e6 | 328 | // |
329 | // Process single ESD track | |
330 | // | |
bf892a6a | 331 | if(!track) return; |
c04c80e6 | 332 | if((track->GetStatus() & AliESDtrack::kTRDout) == 0) return; // require TRD track |
333 | FillTRDLikelihoods(track, species); | |
334 | FillTRDQAplots(track, species); | |
335 | } | |
336 | ||
337 | //__________________________________________________________________ | |
c2690925 | 338 | void AliHFEtrdPIDqa::ProcessTrackAOD(const AliAODTrack * const track, Int_t /*species*/){ |
c04c80e6 | 339 | // |
340 | // Process single AOD track | |
341 | // AOD PID object required | |
342 | // | |
bf892a6a | 343 | if(!track) return; |
c04c80e6 | 344 | AliAODPid *trackPID = track->GetDetPid(); |
345 | if(!trackPID) return; | |
346 | ||
347 | } | |
348 | ||
349 | //__________________________________________________________________ | |
c2690925 | 350 | void AliHFEtrdPIDqa::FillTRDLikelihoods(const AliESDtrack * const track, Int_t species){ |
c04c80e6 | 351 | // |
352 | // Fill TRD Likelihood Histogram | |
353 | // | |
354 | Double_t trdLike[AliPID::kSPECIES]; | |
355 | track->GetTRDpid(trdLike); | |
c2690925 | 356 | // Renormalize |
357 | Double_t norm =trdLike[AliPID::kElectron]+trdLike[AliPID::kPion]; | |
358 | Double_t likeEle = norm == 0. ? 0. : trdLike[AliPID::kElectron]/norm; | |
c04c80e6 | 359 | const AliExternalTrackParam *outerPars = track->GetOuterParam(); |
360 | ||
361 | Double_t quantities[kQuantitiesLike]; memset(quantities, 0, sizeof(Double_t) * kQuantitiesLike); | |
362 | // we store: | |
363 | // species | |
364 | // p | |
365 | // ntracklets | |
366 | // Electron Likelihood | |
367 | quantities[kSpecies] = species; | |
368 | quantities[kP] = outerPars ? outerPars->P() : track->P(); | |
369 | quantities[kNTracklets] = track->GetTRDntrackletsPID(); | |
c2690925 | 370 | quantities[kElectronLike] = likeEle; |
c04c80e6 | 371 | |
bf892a6a | 372 | fHistos->Fill("fLikeTRD", quantities); |
c04c80e6 | 373 | } |
374 | ||
375 | //__________________________________________________________________ | |
c2690925 | 376 | void AliHFEtrdPIDqa::FillTRDQAplots(const AliESDtrack * const track, Int_t species){ |
c04c80e6 | 377 | // |
378 | // Fill QA Plots containing further information | |
379 | // | |
380 | const AliExternalTrackParam *outerPars = track->GetOuterParam(); | |
381 | ||
382 | Double_t quantitiesQA[kQuantitiesQA], quantitiesdEdx[kQuantitiesdEdx], quantitiesTruncMean[kQuantitiesTruncMean]; | |
383 | // we store: | |
384 | // 1. QA | |
385 | // species | |
386 | // p | |
387 | // ntracklets | |
388 | // Non-zero tracklet charges | |
389 | // Number of clusters / full track | |
390 | // 2. dEdx | |
391 | // species | |
392 | // p | |
393 | // ntracklets | |
394 | // dEdx | |
395 | // 3. Truncated Mean | |
396 | // ... | |
397 | // TPC dEdx | |
398 | // TRD dEdx Method 1 | |
399 | // TRD dEdx Method 2 | |
400 | quantitiesQA[kSpecies] = quantitiesdEdx[kSpecies] | |
401 | = quantitiesTruncMean[kSpecies] | |
402 | = species; | |
bf892a6a | 403 | quantitiesQA[kP] = quantitiesTruncMean[kP] |
c04c80e6 | 404 | = outerPars ? outerPars->P() : track->P(); |
405 | quantitiesQA[kNTracklets] = quantitiesdEdx[kNTracklets] | |
406 | = quantitiesTruncMean[kNTracklets] | |
407 | = track->GetTRDntrackletsPID(); | |
3a72645a | 408 | quantitiesQA[kNClusters] = quantitiesdEdx[kNclusters] = track->GetTRDncls(); |
409 | ||
c04c80e6 | 410 | |
3a72645a | 411 | Double_t dEdxSum = 0., qSlice = 0.; |
412 | // remove the last slice from the histogram | |
bf892a6a | 413 | Int_t ntrackletsNonZero = 0, nSlices = track->GetNumberOfTRDslices(), nSlicesNonZero = 0; |
414 | TString speciesname = "pions"; | |
415 | Bool_t selectedForSlicemon = kFALSE; | |
416 | ||
417 | switch(species){ | |
418 | case AliPID::kElectron: speciesname = "Electrons"; selectedForSlicemon = kTRUE; break; | |
419 | case AliPID::kPion: speciesname = "Pions"; selectedForSlicemon = kTRUE; break; | |
420 | default: speciesname = "undefined"; selectedForSlicemon = kFALSE; break; | |
421 | }; | |
422 | AliDebug(1, Form("species %d, speciesname %s, momentum %f, selected %s", species, speciesname.Data(), track->P(), selectedForSlicemon ? "yes" : "no")); | |
c04c80e6 | 423 | for(Int_t iplane = 0; iplane < AliESDtrack::kTRDnPlanes; iplane++){ |
bf892a6a | 424 | quantitiesdEdx[kP] = track->GetTRDmomentum(iplane); |
c04c80e6 | 425 | dEdxSum = 0.; |
3a72645a | 426 | for(Int_t islice = 0; islice < nSlices; islice++){ |
e156c3bb | 427 | if(fTotalChargeInSlice0 && islice >= 7) break; |
428 | qSlice = track->GetTRDslice(iplane, fTotalChargeInSlice0 ? islice + 1 : islice); // hack by mfasel: For data with the new reconstruction, slice 0 is used to store the total charge, the total number of slices is 7 instead of 8 | |
3a72645a | 429 | if(qSlice > 1e-1){ |
430 | // cut out 0 slices | |
431 | nSlicesNonZero++; | |
432 | dEdxSum += qSlice; | |
bf892a6a | 433 | // Reweighting of the slices for the truncated mean: select all pion tracks above |
434 | // 1.5 GeV and monitor the dEdx as function of slice | |
435 | if(selectedForSlicemon && track->P() > 1.5){ | |
436 | AliDebug(2, Form("Filling Histogram fTRDslices%s", speciesname.Data())); | |
437 | fHistos->Fill(Form("fTRDslices%s", speciesname.Data()), static_cast<Double_t>(islice), qSlice); | |
438 | } | |
3a72645a | 439 | } |
440 | } | |
441 | quantitiesdEdx[kNonZeroSlices] = nSlicesNonZero; | |
e156c3bb | 442 | quantitiesdEdx[kdEdx] = fTotalChargeInSlice0 ? track->GetTRDslice(iplane, 0) : dEdxSum; // hack by mfasel: In the new reconstruction, the total charge is stored in the first slice, in the old reconstruction it has to be calculated from the slice charges. |
c04c80e6 | 443 | if(dEdxSum) ntrackletsNonZero++; |
444 | // Fill dEdx histogram | |
bf892a6a | 445 | if(dEdxSum > 1e-1) fHistos->Fill("fQAdEdx", quantitiesdEdx); // Cut out 0 entries |
c04c80e6 | 446 | } |
447 | quantitiesQA[kNonZeroTrackletCharge] = ntrackletsNonZero; | |
bf892a6a | 448 | fHistos->Fill("fQAtrack", quantitiesQA); |
c04c80e6 | 449 | |
450 | quantitiesTruncMean[kTPCdEdx] = track->GetTPCsignal(); | |
bf892a6a | 451 | quantitiesTruncMean[kTRDdEdxMethod1] = fTRDpid->GetTRDSignalV1(track, 0.6); |
452 | quantitiesTruncMean[kTRDdEdxMethod2] = fTRDpid->GetTRDSignalV2(track, 0.6); | |
453 | fHistos->Fill("fTRDtruncMean", quantitiesTruncMean); | |
c04c80e6 | 454 | } |
455 | ||
456 | ///////////////////////////////////////////////////////// | |
457 | // | |
458 | // Code for Post Processing | |
459 | // | |
460 | // ////////////////////////////////////////////////////// | |
461 | ||
462 | //__________________________________________________________________ | |
463 | void AliHFEtrdPIDqa::FinishAnalysis(){ | |
464 | // | |
465 | // Finish Analysis: | |
466 | // Calculate Electron Efficiency for ntracklets = 4...6 | |
467 | // Calculate thresholds for ntracklets = 4...6 | |
468 | // | |
469 | ||
470 | if(!fPionEfficiencies){ | |
471 | fPionEfficiencies = new TList; | |
472 | fPionEfficiencies->SetName("pionEfficiencies"); | |
e156c3bb | 473 | fPionEfficiencies->SetOwner(); |
c04c80e6 | 474 | } |
475 | if(!fProtonEfficiencies){ | |
476 | fProtonEfficiencies = new TList; | |
477 | fProtonEfficiencies->SetName("protonEfficiencies"); | |
e156c3bb | 478 | fProtonEfficiencies->SetOwner(); |
c04c80e6 | 479 | } |
480 | if(!fThresholds){ | |
481 | fThresholds = new TList; | |
482 | fThresholds->SetName("thresholds"); | |
e156c3bb | 483 | fThresholds->SetOwner(); |
c04c80e6 | 484 | } |
485 | ||
486 | for(Int_t itr = 4; itr <= 6; itr++){ | |
e3ae862b | 487 | if(fShowMessage){ |
488 | printf("========================================\n"); | |
489 | printf("Analysing %d trackltes\n", itr); | |
490 | printf("========================================\n"); | |
491 | } | |
c04c80e6 | 492 | AnalyseNTracklets(itr); |
493 | } | |
494 | } | |
495 | ||
496 | //__________________________________________________________________ | |
497 | void AliHFEtrdPIDqa::StoreResults(const Char_t *filename){ | |
498 | // | |
499 | // Store histos into a root file | |
500 | // | |
501 | TFile *outfile = new TFile(filename, "RECREATE"); | |
502 | outfile->cd(); | |
503 | fPionEfficiencies->Clone()->Write(fPionEfficiencies->GetName(), kSingleKey); | |
504 | fProtonEfficiencies->Clone()->Write(fProtonEfficiencies->GetName(), kSingleKey); | |
505 | fThresholds->Clone()->Write(fThresholds->GetName(), kSingleKey); | |
506 | outfile->Close(); | |
507 | delete outfile; | |
508 | } | |
509 | ||
510 | //__________________________________________________________________ | |
e156c3bb | 511 | void AliHFEtrdPIDqa::SaveThresholdParameters(const Char_t *name, Double_t lowerLimit, Double_t upperLimit){ |
c04c80e6 | 512 | // |
513 | // Fit the threshold histograms with the given parametrisation | |
514 | // and store the TF1 in the file | |
515 | // | |
516 | ||
517 | if(!fThresholds){ | |
518 | AliError("Threshold histograms have to be created first"); | |
519 | return; | |
520 | } | |
521 | ||
e3ae862b | 522 | if(fShowMessage){ |
523 | printf("========================================\n"); | |
524 | printf("Calculating threshold parameters\n"); | |
525 | printf("========================================\n"); | |
526 | } | |
c04c80e6 | 527 | |
528 | TList *outlist = new TList; | |
529 | outlist->SetName("thresholdTRD"); | |
530 | ||
531 | TGraph *threshhist = NULL; | |
532 | TF1 *threshparam = NULL; | |
533 | TList *lHistos = NULL, *lFormulas = NULL; | |
534 | for(Int_t itracklet = 4; itracklet <= 6; itracklet++){ | |
535 | ||
e3ae862b | 536 | if(fShowMessage){ |
537 | printf("-------------------------------\n"); | |
538 | printf("Processing %d tracklets\n", itracklet); | |
539 | printf("-------------------------------\n"); | |
540 | } | |
c04c80e6 | 541 | |
542 | lHistos = dynamic_cast<TList *>(fThresholds->FindObject(Form("%dTracklets", itracklet))); | |
543 | if(!lHistos){ | |
c1bd5735 | 544 | AliError(Form("Threshold histograms for the case %d tracklets not found", itracklet)); |
c04c80e6 | 545 | continue; |
546 | } | |
547 | lFormulas = new TList; | |
548 | lFormulas->SetName(Form("%dTracklets", itracklet)); | |
549 | outlist->Add(lFormulas); | |
550 | ||
551 | for(Int_t ieff = 0; ieff < kNElectronEffs; ieff++){ | |
552 | ||
e3ae862b | 553 | if(fShowMessage){ |
554 | printf("<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<\n"); | |
555 | printf("Processing Electron Efficiency %f\n", fgkElectronEff[ieff]); | |
556 | printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n"); | |
557 | } | |
c04c80e6 | 558 | |
559 | threshhist = dynamic_cast<TGraph *>(lHistos->FindObject(Form("eff%d", static_cast<Int_t>(fgkElectronEff[ieff] * 100)))); | |
bf892a6a | 560 | if(!threshhist) continue; |
e156c3bb | 561 | threshparam = MakeThresholds(threshhist, lowerLimit, upperLimit); |
c04c80e6 | 562 | threshparam->SetName(Form("thresh_%d_%d", itracklet, static_cast<Int_t>(fgkElectronEff[ieff] * 100))); |
bf892a6a | 563 | lFormulas->Add(threshparam); |
c04c80e6 | 564 | } |
565 | } | |
566 | ||
567 | // store the output | |
568 | TFile *outfile = new TFile(name, "RECREATE"); | |
569 | outfile->cd(); | |
570 | outlist->Write(outlist->GetName(), kSingleKey); | |
571 | outfile->Close(); | |
572 | delete outfile; | |
573 | } | |
574 | ||
575 | //__________________________________________________________________ | |
576 | void AliHFEtrdPIDqa::AnalyseNTracklets(Int_t nTracklets){ | |
577 | // | |
578 | // Calculate Pion Efficiency, Proton Efficiency and Kaon Efficiency at discrete | |
579 | // elPion Efficiency, Proton Efficiency and Kaon Efficiency at discrete | |
580 | // electron efficiencies | |
581 | // | |
bf892a6a | 582 | THnSparse *hLikeTRD = dynamic_cast<THnSparseF *>(fHistos->Get("fLikeTRD")); |
583 | if(!hLikeTRD){ | |
584 | AliError("Likelihood Histogram not available"); | |
585 | return; | |
586 | } | |
587 | Int_t binTracklets = hLikeTRD->GetAxis(kNTracklets)->FindBin(nTracklets); | |
588 | hLikeTRD->GetAxis(kNTracklets)->SetRange(binTracklets, binTracklets); | |
c04c80e6 | 589 | |
bf892a6a | 590 | Int_t binElectrons = hLikeTRD->GetAxis(kSpecies)->FindBin(AliPID::kElectron); |
c04c80e6 | 591 | AliDebug(1, Form("BinElectrons %d", binElectrons)); |
bf892a6a | 592 | Int_t binPions = hLikeTRD->GetAxis(kSpecies)->FindBin(AliPID::kPion); |
c04c80e6 | 593 | AliDebug(1, Form("BinPions %d", binPions)); |
bf892a6a | 594 | Int_t binProtons = hLikeTRD->GetAxis(kSpecies)->FindBin(AliPID::kProton); |
c04c80e6 | 595 | AliDebug(1, Form("BinProtons %d", binProtons)); |
bf892a6a | 596 | hLikeTRD->GetAxis(kSpecies)->SetRange(binElectrons, binElectrons); |
597 | TH2 *likeElectron = hLikeTRD->Projection(kElectronLike, kP); | |
c04c80e6 | 598 | likeElectron->SetName("likeElectron"); |
bf892a6a | 599 | hLikeTRD->GetAxis(kSpecies)->SetRange(binPions, binPions); |
600 | TH2 *likePion = hLikeTRD->Projection(kElectronLike, kP); | |
c04c80e6 | 601 | likePion->SetName("likePion"); |
bf892a6a | 602 | hLikeTRD->GetAxis(kSpecies)->SetRange(binProtons, binProtons); |
603 | TH2 *likeProton = hLikeTRD->Projection(kElectronLike, kP); | |
c04c80e6 | 604 | likeProton->SetName("likeProton"); |
605 | ||
606 | // Undo ranges | |
bf892a6a | 607 | hLikeTRD->GetAxis(kSpecies)->SetRange(0, hLikeTRD->GetAxis(kSpecies)->GetNbins()); |
608 | hLikeTRD->GetAxis(kNTracklets)->SetRange(0, hLikeTRD->GetAxis(kNTracklets)->GetNbins()); | |
c04c80e6 | 609 | |
610 | // Prepare List for output | |
e156c3bb | 611 | TList *listPions = new TList; listPions->SetName(Form("%dTracklets", nTracklets)); listPions->SetOwner(); |
612 | TList *listProtons = new TList; listProtons->SetName(Form("%dTracklets", nTracklets)); listProtons->SetOwner(); | |
613 | TList *listThresholds = new TList; listThresholds->SetName(Form("%dTracklets", nTracklets)); listThresholds->SetOwner(); | |
c04c80e6 | 614 | fPionEfficiencies->Add(listPions); |
615 | fProtonEfficiencies->Add(listProtons); | |
616 | fThresholds->Add(listThresholds); | |
617 | ||
618 | TH1 *probsEl = NULL, *probsPi = NULL, *probsPr = NULL; | |
619 | TGraphErrors *effPi = NULL, *effPr = NULL; TGraph *thresholds = NULL; | |
620 | Double_t p = 0, dp = 0; | |
621 | Int_t threshbin = 0; | |
622 | Double_t noElEff[2]; // value and error | |
623 | for(Int_t ieff = 0; ieff < kNElectronEffs; ieff++){ | |
e3ae862b | 624 | |
625 | if(fShowMessage){ | |
626 | printf("-----------------------------------------\n"); | |
627 | printf("Doing Electron Efficiency %f\n", fgkElectronEff[ieff]); | |
628 | printf("-----------------------------------------\n"); | |
629 | } | |
c04c80e6 | 630 | effPi = new TGraphErrors(likeElectron->GetXaxis()->GetNbins()); |
631 | effPi->SetName(Form("eff%d", static_cast<Int_t >(fgkElectronEff[ieff] * 100))); | |
632 | effPr = new TGraphErrors(likeElectron->GetXaxis()->GetNbins()); | |
633 | effPr->SetName(Form("eff%d", static_cast<Int_t >(fgkElectronEff[ieff] * 100))); | |
634 | thresholds = new TGraph(likeElectron->GetXaxis()->GetNbins()); | |
635 | thresholds->SetName(Form("eff%d", static_cast<Int_t >(fgkElectronEff[ieff] * 100))); | |
636 | ||
637 | // Add to lists | |
638 | listPions->Add(effPi); | |
639 | listProtons->Add(effPr); | |
640 | listThresholds->Add(thresholds); | |
641 | ||
642 | for(Int_t imom = 1; imom <= likeElectron->GetXaxis()->GetLast(); imom++){ | |
643 | p = likeElectron->GetXaxis()->GetBinCenter(imom); | |
644 | dp = likeElectron->GetXaxis()->GetBinWidth(imom)/2; | |
645 | ||
646 | probsEl = likeElectron->ProjectionY("el", imom); | |
647 | if(!probsEl->GetEntries()) continue; | |
648 | probsEl->Scale(1./probsEl->Integral()); | |
649 | probsPi = likePion->ProjectionY("pi", imom); | |
650 | if(!probsPi->GetEntries()) continue; | |
651 | probsPi->Scale(1./probsPi->Integral()); | |
652 | probsPr = likeProton->ProjectionY("pr", imom); | |
653 | if(!probsPr->GetEntries()) continue; | |
654 | probsPr->Scale(1./probsPr->Integral()); | |
655 | AliDebug(1, Form("Calculating Values for p = %f", p)); | |
656 | ||
657 | // Calculare threshold we need to achive the x% electron Efficiency | |
658 | threshbin = GetThresholdBin(probsEl, fgkElectronEff[ieff]); | |
659 | thresholds->SetPoint(imom - 1, p, probsEl->GetXaxis()->GetBinCenter(threshbin)); | |
660 | AliDebug(1, Form("threshold %d|%f", threshbin, probsEl->GetXaxis()->GetBinCenter(threshbin))); | |
661 | ||
662 | // Calculate non-electronEfficiency and error | |
663 | CalculateEfficiency(probsPi, threshbin, noElEff); | |
664 | AliDebug(1, Form("Pion Efficiency %f", noElEff[0])); | |
665 | effPi->SetPoint(imom - 1, p, noElEff[0]); | |
666 | effPi->SetPointError(imom - 1, dp, noElEff[1]); | |
667 | CalculateEfficiency(probsPr, threshbin, noElEff); | |
668 | effPr->SetPoint(imom - 1, p, noElEff[0]); | |
669 | effPr->SetPointError(imom - 1, dp, noElEff[1]); | |
670 | AliDebug(1, Form("Proton Efficiency %f", noElEff[0])); | |
671 | ||
672 | // cleanup | |
673 | delete probsEl; | |
674 | delete probsPi; | |
675 | delete probsPr; | |
676 | } | |
677 | } | |
678 | ||
679 | // remove temporary histograms | |
680 | delete likeElectron; | |
681 | delete likePion; | |
682 | delete likeProton; | |
683 | } | |
684 | ||
685 | //__________________________________________________________________ | |
c2690925 | 686 | Int_t AliHFEtrdPIDqa::GetThresholdBin(const TH1 * const input, Double_t eff){ |
c04c80e6 | 687 | // |
688 | // Calculate the threshold bin | |
689 | // | |
690 | Double_t integralEff = 0.; | |
691 | Int_t currentBin = 0; | |
692 | for(Int_t ibin = input->GetXaxis()->GetLast(); ibin >= input->GetXaxis()->GetFirst(); ibin--){ | |
693 | currentBin = ibin; | |
694 | integralEff += input->GetBinContent(ibin); | |
695 | if(integralEff >= eff){ | |
696 | // we found the matching bin, break the loop | |
697 | break; | |
698 | } | |
699 | } | |
700 | return currentBin; | |
701 | } | |
702 | ||
703 | //__________________________________________________________________ | |
c2690925 | 704 | Bool_t AliHFEtrdPIDqa::CalculateEfficiency(const TH1 * const input, Int_t threshbin, Double_t * const par){ |
c04c80e6 | 705 | // |
706 | // Calculate non-electron efficiency | |
707 | // | |
708 | Double_t integralEff = 0; | |
709 | for(Int_t ibin = threshbin; ibin <= input->GetXaxis()->GetLast(); ibin++) | |
710 | integralEff += input->GetBinContent(ibin); | |
711 | par[0] = integralEff; | |
712 | ||
713 | // @TODO: Error calculation | |
714 | par[1] = 0; | |
715 | ||
716 | return kTRUE; | |
717 | } | |
718 | ||
719 | //__________________________________________________________________ | |
e3ae862b | 720 | void AliHFEtrdPIDqa::DrawTracklet(Int_t itracklet, Double_t pmin, Double_t pmax, Bool_t doFit){ |
c04c80e6 | 721 | // |
722 | // Draw efficiencies and threshold as function of p | |
723 | // | |
724 | if(!(fPionEfficiencies && fProtonEfficiencies && fThresholds)){ | |
725 | AliError("No graphs to draw available"); | |
726 | return; | |
727 | } | |
728 | ||
729 | TList *lpions = dynamic_cast<TList *>(fPionEfficiencies->FindObject(Form("%dTracklets", itracklet))); | |
730 | TList *lprotons = dynamic_cast<TList *>(fProtonEfficiencies->FindObject(Form("%dTracklets", itracklet))); | |
731 | ||
732 | TList *lthresholds = dynamic_cast<TList *>(fThresholds->FindObject(Form("%dTracklets", itracklet))); | |
bf892a6a | 733 | if(!(lpions && lprotons && lthresholds)){ |
734 | AliDebug(1, "Relevant lists not found. Did you forget to run FinishAnalysis()?"); | |
735 | return; | |
736 | } | |
c04c80e6 | 737 | |
738 | TGraphErrors *pi, *pr; | |
739 | TGraph *tr; | |
740 | TLegend *leg; | |
c1bd5735 | 741 | TCanvas *c1 = new TCanvas(Form("tracklet%d", itracklet), Form("Tracklet %d", itracklet), 1024, 768); |
c04c80e6 | 742 | c1->Divide(3,2); |
bf892a6a | 743 | TF1 *threshfit = NULL; |
c04c80e6 | 744 | for(Int_t ieff = 0; ieff < kNElectronEffs; ieff++){ |
745 | c1->cd(ieff + 1); | |
746 | leg = new TLegend(0.6, 0.7, 0.89, 0.89); | |
747 | leg->SetBorderSize(0); | |
748 | leg->SetFillStyle(0); | |
749 | pi = dynamic_cast<TGraphErrors *>(lpions->FindObject(Form("eff%d", static_cast<Int_t>(fgkElectronEff[ieff] * 100)))); | |
750 | pr = dynamic_cast<TGraphErrors *>(lprotons->FindObject(Form("eff%d", static_cast<Int_t>(fgkElectronEff[ieff] * 100)))); | |
751 | tr = dynamic_cast<TGraph *>(lthresholds->FindObject(Form("eff%d", static_cast<Int_t>(fgkElectronEff[ieff] * 100)))); | |
bf892a6a | 752 | if(!(pi && pr && tr)) continue; |
c04c80e6 | 753 | |
754 | // Define nice plot, draw | |
755 | // Axis Title | |
756 | pi->GetXaxis()->SetTitle("p / GeV/c"); | |
c1bd5735 | 757 | pi->GetYaxis()->SetTitle("Efficiency"); |
c04c80e6 | 758 | pr->GetXaxis()->SetTitle("p / GeV/c"); |
c1bd5735 | 759 | pr->GetYaxis()->SetTitle("Efficiency"); |
c04c80e6 | 760 | tr->GetXaxis()->SetTitle("p / GeV/c"); |
c1bd5735 | 761 | tr->GetYaxis()->SetTitle("Efficiency"); |
c04c80e6 | 762 | // Axis Range |
e3ae862b | 763 | pi->GetYaxis()->SetRangeUser(1e-3, 1.); |
764 | pr->GetYaxis()->SetRangeUser(1e-3, 1.); | |
765 | tr->GetYaxis()->SetRangeUser(1e-3, 1.); | |
766 | if(pmin > 0 && pmax > 0.){ | |
767 | pi->GetXaxis()->SetRangeUser(pmin, pmax); | |
768 | pr->GetXaxis()->SetRangeUser(pmin, pmax); | |
769 | tr->GetXaxis()->SetRangeUser(pmin, pmax); | |
770 | } | |
c04c80e6 | 771 | // Marker |
772 | pi->SetMarkerColor(kRed); | |
773 | pi->SetMarkerStyle(20); | |
774 | pr->SetMarkerColor(kBlue); | |
775 | pr->SetMarkerStyle(21); | |
776 | tr->SetMarkerColor(kBlack); | |
777 | tr->SetMarkerStyle(22); | |
778 | // Title | |
779 | pi->SetTitle(Form ("%.2f Electron Efficiency", fgkElectronEff[ieff])); | |
780 | pr->SetTitle(Form ("%.2f Electron Efficiency", fgkElectronEff[ieff])); | |
781 | tr->SetTitle(Form ("%.2f Electron Efficiency", fgkElectronEff[ieff])); | |
782 | // Draw | |
783 | pi->Draw("ape"); pr->Draw("pesame"); tr->Draw("psame"); | |
784 | ||
bf892a6a | 785 | // Optionally do Fit |
786 | if(doFit){ | |
e156c3bb | 787 | threshfit = MakeThresholds(tr, pmin, pmax); |
bf892a6a | 788 | threshfit->SetLineColor(kBlack); |
789 | threshfit->Draw("same"); | |
790 | } | |
791 | ||
c04c80e6 | 792 | // Add entries to legend |
793 | leg->AddEntry(pi, "Pion Efficiency", "lp"); | |
794 | leg->AddEntry(pr, "Proton Efficiency", "lp"); | |
795 | leg->AddEntry(tr, "Thresholds", "lp"); | |
796 | leg->Draw(); | |
797 | c1->Update(); | |
798 | } | |
799 | } | |
800 | ||
801 | //__________________________________________________________________ | |
e156c3bb | 802 | TF1 *AliHFEtrdPIDqa::MakeThresholds(TGraph *threshist, Double_t lowerLimit, Double_t upperLimit){ |
c04c80e6 | 803 | // |
804 | // Create TF1 containing the threshold parametrisation | |
805 | // | |
806 | ||
807 | TF1 *threshparam = new TF1("thresh", "1-[0]-[1]*x-[2]*TMath::Exp(-[3]*x)", 0.1, 10); | |
e156c3bb | 808 | threshist->Fit(threshparam, "NE", "", lowerLimit, upperLimit); |
c04c80e6 | 809 | return threshparam; |
810 | } | |
811 | ||
812 | //__________________________________________________________________ | |
813 | void AliHFEtrdPIDqa::ClearLists(){ | |
814 | // | |
815 | // Clear lists for particle efficiencies and thresholds | |
816 | // | |
817 | if(fPionEfficiencies){ | |
818 | fPionEfficiencies->Delete(); | |
819 | delete fPionEfficiencies; | |
820 | fPionEfficiencies = NULL; | |
821 | } | |
822 | if(fProtonEfficiencies){ | |
823 | fProtonEfficiencies->Delete(); | |
824 | delete fProtonEfficiencies; | |
825 | fProtonEfficiencies = NULL; | |
826 | } | |
827 | if(fThresholds){ | |
828 | fThresholds->Delete(); | |
829 | delete fThresholds; | |
830 | fThresholds = NULL; | |
831 | } | |
832 | } | |
e3ae862b | 833 | |
834 | //__________________________________________________________________ | |
835 | Double_t AliHFEtrdPIDqa::EvalPionEfficiency(Int_t ntls, Int_t eEff, Double_t p){ | |
c2690925 | 836 | // |
837 | // calculate pion efficiency | |
838 | // Arguments: | |
839 | // Number of tracklets | |
840 | // Electron Efficiency | |
841 | // Momentum | |
842 | // | |
e3ae862b | 843 | TList *graphs = dynamic_cast<TList *>(fPionEfficiencies->FindObject(Form("%dTracklets", ntls))); |
844 | if(!graphs) return -1.; | |
845 | TGraph *measurement = dynamic_cast<TGraph *>(graphs->FindObject(Form("eff%d", eEff))); | |
846 | if(!measurement) return -1.; | |
847 | return measurement->Eval(p); | |
848 | } | |
849 | ||
850 | //__________________________________________________________________ | |
851 | Double_t AliHFEtrdPIDqa::EvalProtonEfficiency(Int_t ntls, Int_t eEff, Double_t p){ | |
c2690925 | 852 | // |
853 | // calculate proton efficiency | |
854 | // Arguments: | |
855 | // Number of tracklets | |
856 | // Electron Efficiency | |
857 | // Momentum | |
858 | // | |
e3ae862b | 859 | TList *graphs = dynamic_cast<TList *>(fProtonEfficiencies->FindObject(Form("%dTracklets", ntls))); |
860 | if(!graphs) return -1.; | |
861 | TGraph *measurement = dynamic_cast<TGraph *>(graphs->FindObject(Form("eff%d", eEff))); | |
862 | if(!measurement) return -1.; | |
863 | return measurement->Eval(p); | |
864 | } | |
865 | ||
866 | //__________________________________________________________________ | |
867 | Double_t AliHFEtrdPIDqa::EvalThreshold(Int_t ntls, Int_t eEff, Double_t p){ | |
c2690925 | 868 | // |
869 | // Get the threshold to reach a certain electron efficiency | |
870 | // Arguments: | |
871 | // Number of tracklets | |
872 | // Electron Efficiency | |
873 | // Momentum | |
874 | // | |
e3ae862b | 875 | TList *graphs = dynamic_cast<TList *>(fThresholds->FindObject(Form("%dTracklets", ntls))); |
876 | if(!graphs) return -1.; | |
877 | TGraph *measurement = dynamic_cast<TGraph *>(graphs->FindObject(Form("eff%d", eEff))); | |
878 | if(!measurement) return -1.; | |
879 | return measurement->Eval(p); | |
880 | } | |
881 |