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3a72645a | 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 | **************************************************************************/ | |
27de2dfb | 15 | |
16 | /* $Id$ */ | |
17 | ||
3a72645a | 18 | // |
19 | // Class AliHFEtofPIDqa | |
20 | // | |
21 | // Monitoring TOF PID in the HFE PID montioring framework. The following | |
22 | // quantities are monitored: | |
23 | // TOF time distance to electron hypothesis (Number of sigmas) | |
24 | // TOF time distance to the pion hypothesis (Absolute value) | |
25 | // TPC dE/dx (Number of sigmas, as control histogram) | |
26 | // (Always as function of momentum, particle species and centrality | |
27 | // before and after cut) | |
28 | // More information about the PID monitoring framework can be found in | |
29 | // AliHFEpidQAmanager.cxx and AliHFEdetPIDqa.cxx | |
30 | // | |
31 | // Author: | |
32 | // | |
33 | // Markus Fasel <M.Fasel@gsi.de> | |
34 | #include <TClass.h> | |
35 | #include <TH2.h> | |
36 | #include <THnSparse.h> | |
37 | #include <TString.h> | |
38 | ||
3a72645a | 39 | #include "AliLog.h" |
40 | #include "AliPID.h" | |
6555e2ad | 41 | #include "AliVParticle.h" |
3a72645a | 42 | |
43 | #include "AliHFEcollection.h" | |
6555e2ad | 44 | #include "AliHFEpid.h" |
3a72645a | 45 | #include "AliHFEpidBase.h" |
6555e2ad | 46 | #include "AliHFEpidQAmanager.h" |
47 | #include "AliHFEpidTPC.h" | |
48 | #include "AliHFEpidTOF.h" | |
3a72645a | 49 | #include "AliHFEtools.h" |
50 | #include "AliHFEtofPIDqa.h" | |
51 | ||
6555e2ad | 52 | ClassImp(AliHFEpidTOF) |
53 | ||
3a72645a | 54 | //_________________________________________________________ |
55 | AliHFEtofPIDqa::AliHFEtofPIDqa(): | |
56 | AliHFEdetPIDqa() | |
57 | , fHistos(NULL) | |
58 | { | |
59 | // | |
60 | // Dummy constructor | |
61 | // | |
62 | } | |
63 | ||
64 | //_________________________________________________________ | |
65 | AliHFEtofPIDqa::AliHFEtofPIDqa(const char* name): | |
6555e2ad | 66 | AliHFEdetPIDqa(name, "QA for TOF") |
3a72645a | 67 | , fHistos(NULL) |
68 | { | |
69 | // | |
70 | // Default constructor | |
71 | // | |
72 | } | |
73 | ||
74 | //_________________________________________________________ | |
75 | AliHFEtofPIDqa::AliHFEtofPIDqa(const AliHFEtofPIDqa &o): | |
76 | AliHFEdetPIDqa(o) | |
77 | , fHistos() | |
78 | { | |
79 | // | |
80 | // Copy constructor | |
81 | // | |
82 | o.Copy(*this); | |
83 | } | |
84 | ||
85 | //_________________________________________________________ | |
86 | AliHFEtofPIDqa &AliHFEtofPIDqa::operator=(const AliHFEtofPIDqa &o){ | |
87 | // | |
88 | // Do assignment | |
89 | // | |
90 | AliHFEdetPIDqa::operator=(o); | |
91 | if(&o != this) o.Copy(*this); | |
92 | return *this; | |
93 | } | |
94 | ||
95 | //_________________________________________________________ | |
96 | AliHFEtofPIDqa::~AliHFEtofPIDqa(){ | |
97 | // | |
98 | // Destructor | |
99 | // | |
100 | if(fHistos) delete fHistos; | |
101 | } | |
102 | ||
103 | //_________________________________________________________ | |
104 | void AliHFEtofPIDqa::Copy(TObject &o) const { | |
105 | // | |
106 | // Make copy | |
107 | // | |
108 | AliHFEtofPIDqa &target = dynamic_cast<AliHFEtofPIDqa &>(o); | |
109 | if(target.fHistos){ | |
110 | delete target.fHistos; | |
111 | target.fHistos = NULL; | |
112 | } | |
113 | if(fHistos) target.fHistos = new AliHFEcollection(*fHistos); | |
114 | } | |
115 | ||
116 | //_________________________________________________________ | |
117 | Long64_t AliHFEtofPIDqa::Merge(TCollection *coll){ | |
118 | // | |
119 | // Merge with other objects | |
120 | // | |
121 | if(!coll) return 0; | |
122 | if(coll->IsEmpty()) return 1; | |
123 | ||
124 | TIter it(coll); | |
125 | AliHFEtofPIDqa *refQA = NULL; | |
126 | TObject *o = NULL; | |
127 | Long64_t count = 0; | |
128 | TList listHistos; | |
129 | while((o = it())){ | |
130 | refQA = dynamic_cast<AliHFEtofPIDqa *>(o); | |
131 | if(!refQA) continue; | |
132 | ||
133 | listHistos.Add(refQA->fHistos); | |
134 | count++; | |
135 | } | |
136 | fHistos->Merge(&listHistos); | |
137 | return count + 1; | |
138 | } | |
139 | ||
140 | //_________________________________________________________ | |
141 | void AliHFEtofPIDqa::Initialize(){ | |
142 | // | |
143 | // Define Histograms | |
144 | // | |
145 | ||
146 | fHistos = new AliHFEcollection("tofqahistos", "Collection of TOF QA histograms"); | |
147 | ||
148 | // Make common binning | |
149 | const Int_t kPIDbins = AliPID::kSPECIES + 1; | |
3a72645a | 150 | const Int_t kSteps = 2; |
151 | const Double_t kMinPID = -1; | |
152 | const Double_t kMinP = 0.; | |
153 | const Double_t kMaxPID = (Double_t)AliPID::kSPECIES; | |
154 | const Double_t kMaxP = 20.; | |
bf892a6a | 155 | // Quantities where one can switch between low and high resolution |
156 | Int_t kPbins = fQAmanager->HasHighResolutionHistos() ? 1000 : 100; | |
157 | Int_t kSigmaBins = fQAmanager->HasHighResolutionHistos() ? 1400 : 240; | |
158 | ||
3a72645a | 159 | // 1st histogram: TOF sigmas: (species, p nsigma, step) |
3a72645a | 160 | Int_t nBinsSigma[4] = {kPIDbins, kPbins, kSigmaBins, kSteps}; |
161 | Double_t minSigma[4] = {kMinPID, kMinP, -12., 0}; | |
162 | Double_t maxSigma[4] = {kMaxPID, kMaxP, 12., 2.}; | |
163 | fHistos->CreateTHnSparse("tofnSigma", "TOF signal; species; p [GeV/c]; TOF signal [a.u.]; Selection Step", 4, nBinsSigma, minSigma, maxSigma); | |
164 | ||
165 | // 2nd histogram: TOF time - pion hypothesis (TOF Time Resolution Monitor) | |
166 | fHistos->CreateTH2F("tofTimeRes", "Difference between measured and expected time for Pions; p [GeV/c]; #Deltat [ps]", 100, 0.1, 10, 100, -200, 200); | |
167 | ||
168 | // 3rd histogram: TPC sigmas to the electron line: (species, p nsigma, step - only filled if apriori PID information available) | |
169 | fHistos->CreateTHnSparse("tofMonitorTPC", "TPC signal; species; p [GeV/c]; TPC signal [a.u.]; Selection Step", 4, nBinsSigma, minSigma, maxSigma); | |
170 | } | |
171 | ||
172 | //_________________________________________________________ | |
6555e2ad | 173 | void AliHFEtofPIDqa::ProcessTrack(const AliHFEpidObject *track, AliHFEdetPIDqa::EStep_t step){ |
3a72645a | 174 | // |
175 | // Fill TPC histograms | |
176 | // | |
6555e2ad | 177 | AliHFEpidObject::AnalysisType_t anatype = track->IsESDanalysis() ? AliHFEpidObject::kESDanalysis : AliHFEpidObject::kAODanalysis; |
3a72645a | 178 | Int_t species = track->GetAbInitioPID(); |
179 | if(species >= AliPID::kSPECIES) species = -1; | |
3a72645a | 180 | |
3a72645a | 181 | AliDebug(1, Form("Monitoring particle of type %d for step %d", species, step)); |
6555e2ad | 182 | AliHFEpidTOF *tofpid= dynamic_cast<AliHFEpidTOF *>(fQAmanager->GetDetectorPID(AliHFEpid::kTOFpid)); |
183 | AliHFEpidTPC *tpcpid= dynamic_cast<AliHFEpidTPC *>(fQAmanager->GetDetectorPID(AliHFEpid::kTPCpid)); | |
3a72645a | 184 | |
185 | Double_t contentSignal[4]; | |
186 | contentSignal[0] = species; | |
6555e2ad | 187 | contentSignal[1] = track->GetRecTrack()->P(); |
bf892a6a | 188 | contentSignal[2] = tofpid ? tofpid->NumberOfSigmas(track->GetRecTrack(), AliPID::kElectron, anatype): 0.; |
3a72645a | 189 | contentSignal[3] = step; |
bf892a6a | 190 | fHistos->Fill("tofnSigma", contentSignal); |
191 | if(tofpid){ | |
192 | Double_t timeTof = tofpid->GetTOFsignal(track->GetRecTrack(), anatype); | |
193 | Double_t time0 = tofpid->GetTime0(anatype); | |
194 | Double_t tof = timeTof - time0; | |
195 | Double_t times[AliPID::kSPECIES]; tofpid->GetIntegratedTimes(track->GetRecTrack(), times, anatype); | |
196 | fHistos->Fill("tofTimeRes",contentSignal[1], tof - times[AliPID::kPion]); | |
197 | } | |
3a72645a | 198 | if(species > -1){ |
bf892a6a | 199 | contentSignal[2] = tpcpid ? tpcpid->NumberOfSigmas(track->GetRecTrack(), AliPID::kElectron, anatype) : 0.; |
3a72645a | 200 | fHistos->Fill("tofMonitorTPC", contentSignal); |
201 | } | |
202 | } | |
203 | ||
3a72645a | 204 | //_________________________________________________________ |
205 | TH2 *AliHFEtofPIDqa::MakeSpectrumNSigma(AliHFEdetPIDqa::EStep_t istep, Int_t species){ | |
206 | // | |
207 | // Plot the Spectrum | |
208 | // | |
209 | THnSparseF *hSignal = dynamic_cast<THnSparseF *>(fHistos->Get("tofnSigma")); | |
bf892a6a | 210 | if(!hSignal) return NULL; |
3a72645a | 211 | hSignal->GetAxis(3)->SetRange(istep + 1, istep + 1); |
e3ae862b | 212 | if(species >= 0 && species < AliPID::kSPECIES) |
3a72645a | 213 | hSignal->GetAxis(0)->SetRange(2 + species, 2 + species); |
214 | TH2 *hTmp = hSignal->Projection(2,1); | |
bf892a6a | 215 | TString hname = Form("hTPCsigma%s", istep == AliHFEdetPIDqa::kBeforePID ? "before" : "after"), |
216 | htitle = Form("TPC dE/dx Spectrum[#sigma] %s selection", istep == AliHFEdetPIDqa::kBeforePID ? "before" : "after"); | |
3a72645a | 217 | if(species > -1){ |
bf892a6a | 218 | hname += AliPID::ParticleName(species); |
219 | htitle += Form(" for %ss", AliPID::ParticleName(species)); | |
3a72645a | 220 | } |
bf892a6a | 221 | hTmp->SetName(hname.Data()); |
222 | hTmp->SetTitle(htitle.Data()); | |
3a72645a | 223 | hTmp->SetStats(kFALSE); |
224 | hTmp->GetXaxis()->SetTitle("p [GeV/c]"); | |
225 | hTmp->GetYaxis()->SetTitle("TOF time|_{el} - expected time|_{el} [#sigma]"); | |
226 | hSignal->GetAxis(3)->SetRange(0, hSignal->GetAxis(3)->GetNbins()); | |
227 | hSignal->GetAxis(0)->SetRange(0, hSignal->GetAxis(0)->GetNbins()); | |
228 | return hTmp; | |
229 | } | |
230 | ||
231 | //_________________________________________________________ | |
232 | TH1 *AliHFEtofPIDqa::GetHistogram(const char *name){ | |
233 | // | |
234 | // Get the histogram | |
235 | // | |
236 | if(!fHistos) return NULL; | |
237 | TObject *histo = fHistos->Get(name); | |
238 | if(!histo->InheritsFrom("TH1")) return NULL; | |
239 | return dynamic_cast<TH1 *>(histo); | |
240 | } | |
241 |