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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 | **************************************************************************/ | |
15 | // | |
16 | // Class AliHFEtofPIDqa | |
17 | // | |
18 | // Monitoring TOF PID in the HFE PID montioring framework. The following | |
19 | // quantities are monitored: | |
20 | // TOF time distance to electron hypothesis (Number of sigmas) | |
21 | // TOF time distance to the pion hypothesis (Absolute value) | |
22 | // TPC dE/dx (Number of sigmas, as control histogram) | |
23 | // (Always as function of momentum, particle species and centrality | |
24 | // before and after cut) | |
25 | // More information about the PID monitoring framework can be found in | |
26 | // AliHFEpidQAmanager.cxx and AliHFEdetPIDqa.cxx | |
27 | // | |
28 | // Author: | |
29 | // | |
30 | // Markus Fasel <M.Fasel@gsi.de> | |
31 | #include <TClass.h> | |
32 | #include <TH2.h> | |
33 | #include <THnSparse.h> | |
34 | #include <TString.h> | |
35 | ||
3a72645a | 36 | #include "AliLog.h" |
37 | #include "AliPID.h" | |
8c1c76e9 | 38 | #include "AliPIDResponse.h" |
6555e2ad | 39 | #include "AliVParticle.h" |
3a72645a | 40 | |
41 | #include "AliHFEcollection.h" | |
6555e2ad | 42 | #include "AliHFEpid.h" |
3a72645a | 43 | #include "AliHFEpidBase.h" |
6555e2ad | 44 | #include "AliHFEpidQAmanager.h" |
45 | #include "AliHFEpidTPC.h" | |
46 | #include "AliHFEpidTOF.h" | |
3a72645a | 47 | #include "AliHFEtools.h" |
48 | #include "AliHFEtofPIDqa.h" | |
49 | ||
6555e2ad | 50 | ClassImp(AliHFEpidTOF) |
51 | ||
3a72645a | 52 | //_________________________________________________________ |
53 | AliHFEtofPIDqa::AliHFEtofPIDqa(): | |
54 | AliHFEdetPIDqa() | |
55 | , fHistos(NULL) | |
56 | { | |
57 | // | |
58 | // Dummy constructor | |
59 | // | |
60 | } | |
61 | ||
62 | //_________________________________________________________ | |
63 | AliHFEtofPIDqa::AliHFEtofPIDqa(const char* name): | |
6555e2ad | 64 | AliHFEdetPIDqa(name, "QA for TOF") |
3a72645a | 65 | , fHistos(NULL) |
66 | { | |
67 | // | |
68 | // Default constructor | |
69 | // | |
70 | } | |
71 | ||
72 | //_________________________________________________________ | |
73 | AliHFEtofPIDqa::AliHFEtofPIDqa(const AliHFEtofPIDqa &o): | |
74 | AliHFEdetPIDqa(o) | |
75 | , fHistos() | |
76 | { | |
77 | // | |
78 | // Copy constructor | |
79 | // | |
80 | o.Copy(*this); | |
81 | } | |
82 | ||
83 | //_________________________________________________________ | |
84 | AliHFEtofPIDqa &AliHFEtofPIDqa::operator=(const AliHFEtofPIDqa &o){ | |
85 | // | |
86 | // Do assignment | |
87 | // | |
88 | AliHFEdetPIDqa::operator=(o); | |
89 | if(&o != this) o.Copy(*this); | |
90 | return *this; | |
91 | } | |
92 | ||
93 | //_________________________________________________________ | |
94 | AliHFEtofPIDqa::~AliHFEtofPIDqa(){ | |
95 | // | |
96 | // Destructor | |
97 | // | |
98 | if(fHistos) delete fHistos; | |
99 | } | |
100 | ||
101 | //_________________________________________________________ | |
102 | void AliHFEtofPIDqa::Copy(TObject &o) const { | |
103 | // | |
104 | // Make copy | |
105 | // | |
106 | AliHFEtofPIDqa &target = dynamic_cast<AliHFEtofPIDqa &>(o); | |
107 | if(target.fHistos){ | |
108 | delete target.fHistos; | |
109 | target.fHistos = NULL; | |
110 | } | |
111 | if(fHistos) target.fHistos = new AliHFEcollection(*fHistos); | |
112 | } | |
113 | ||
114 | //_________________________________________________________ | |
115 | Long64_t AliHFEtofPIDqa::Merge(TCollection *coll){ | |
116 | // | |
117 | // Merge with other objects | |
118 | // | |
119 | if(!coll) return 0; | |
120 | if(coll->IsEmpty()) return 1; | |
121 | ||
122 | TIter it(coll); | |
123 | AliHFEtofPIDqa *refQA = NULL; | |
124 | TObject *o = NULL; | |
125 | Long64_t count = 0; | |
126 | TList listHistos; | |
127 | while((o = it())){ | |
128 | refQA = dynamic_cast<AliHFEtofPIDqa *>(o); | |
129 | if(!refQA) continue; | |
130 | ||
131 | listHistos.Add(refQA->fHistos); | |
132 | count++; | |
133 | } | |
134 | fHistos->Merge(&listHistos); | |
135 | return count + 1; | |
136 | } | |
137 | ||
138 | //_________________________________________________________ | |
139 | void AliHFEtofPIDqa::Initialize(){ | |
140 | // | |
141 | // Define Histograms | |
142 | // | |
143 | ||
144 | fHistos = new AliHFEcollection("tofqahistos", "Collection of TOF QA histograms"); | |
145 | ||
146 | // Make common binning | |
147 | const Int_t kPIDbins = AliPID::kSPECIES + 1; | |
3a72645a | 148 | const Int_t kSteps = 2; |
c2690925 | 149 | const Int_t kCentralityBins = 11; |
3a72645a | 150 | const Double_t kMinPID = -1; |
151 | const Double_t kMinP = 0.; | |
152 | const Double_t kMaxPID = (Double_t)AliPID::kSPECIES; | |
153 | const Double_t kMaxP = 20.; | |
bf892a6a | 154 | // Quantities where one can switch between low and high resolution |
155 | Int_t kPbins = fQAmanager->HasHighResolutionHistos() ? 1000 : 100; | |
156 | Int_t kSigmaBins = fQAmanager->HasHighResolutionHistos() ? 1400 : 240; | |
157 | ||
3a72645a | 158 | // 1st histogram: TOF sigmas: (species, p nsigma, step) |
c2690925 | 159 | Int_t nBinsSigma[5] = {kPIDbins, kPbins, kSigmaBins, kSteps, kCentralityBins}; |
160 | Double_t minSigma[5] = {kMinPID, kMinP, -12., 0, 0}; | |
161 | Double_t maxSigma[5] = {kMaxPID, kMaxP, 12., 2., 11.}; | |
162 | fHistos->CreateTHnSparse("tofnSigma", "TOF signal; species; p [GeV/c]; TOF signal [a.u.]; Selection Step; Centrality", 5, nBinsSigma, minSigma, maxSigma); | |
3a72645a | 163 | |
3a72645a | 164 | // 3rd histogram: TPC sigmas to the electron line: (species, p nsigma, step - only filled if apriori PID information available) |
c2690925 | 165 | fHistos->CreateTHnSparse("tofMonitorTPC", "TPC signal; species; p [GeV/c]; TPC signal [a.u.]; Selection Step; Centrality", 5, nBinsSigma, minSigma, maxSigma); |
3a72645a | 166 | } |
167 | ||
168 | //_________________________________________________________ | |
6555e2ad | 169 | void AliHFEtofPIDqa::ProcessTrack(const AliHFEpidObject *track, AliHFEdetPIDqa::EStep_t step){ |
3a72645a | 170 | // |
171 | // Fill TPC histograms | |
172 | // | |
8c1c76e9 | 173 | //AliHFEpidObject::AnalysisType_t anatype = track->IsESDanalysis() ? AliHFEpidObject::kESDanalysis : AliHFEpidObject::kAODanalysis; |
c2690925 | 174 | Float_t centrality = track->GetCentrality(); |
3a72645a | 175 | Int_t species = track->GetAbInitioPID(); |
176 | if(species >= AliPID::kSPECIES) species = -1; | |
3a72645a | 177 | |
3a72645a | 178 | AliDebug(1, Form("Monitoring particle of type %d for step %d", species, step)); |
6555e2ad | 179 | AliHFEpidTOF *tofpid= dynamic_cast<AliHFEpidTOF *>(fQAmanager->GetDetectorPID(AliHFEpid::kTOFpid)); |
3a72645a | 180 | |
8c1c76e9 | 181 | const AliPIDResponse *pidResponse = tofpid ? tofpid->GetPIDResponse() : NULL; |
c2690925 | 182 | Double_t contentSignal[5]; |
3a72645a | 183 | contentSignal[0] = species; |
6555e2ad | 184 | contentSignal[1] = track->GetRecTrack()->P(); |
8c1c76e9 | 185 | contentSignal[2] = pidResponse ? pidResponse->NumberOfSigmasTOF(track->GetRecTrack(), AliPID::kElectron): 0.; |
3a72645a | 186 | contentSignal[3] = step; |
c2690925 | 187 | contentSignal[4] = centrality; |
bf892a6a | 188 | fHistos->Fill("tofnSigma", contentSignal); |
3a72645a | 189 | if(species > -1){ |
8c1c76e9 | 190 | contentSignal[2] = pidResponse ? pidResponse->NumberOfSigmasTPC(track->GetRecTrack(), AliPID::kElectron) : 0.; |
3a72645a | 191 | fHistos->Fill("tofMonitorTPC", contentSignal); |
192 | } | |
193 | } | |
194 | ||
3a72645a | 195 | //_________________________________________________________ |
196 | TH2 *AliHFEtofPIDqa::MakeSpectrumNSigma(AliHFEdetPIDqa::EStep_t istep, Int_t species){ | |
197 | // | |
198 | // Plot the Spectrum | |
199 | // | |
200 | THnSparseF *hSignal = dynamic_cast<THnSparseF *>(fHistos->Get("tofnSigma")); | |
bf892a6a | 201 | if(!hSignal) return NULL; |
3a72645a | 202 | hSignal->GetAxis(3)->SetRange(istep + 1, istep + 1); |
e3ae862b | 203 | if(species >= 0 && species < AliPID::kSPECIES) |
3a72645a | 204 | hSignal->GetAxis(0)->SetRange(2 + species, 2 + species); |
205 | TH2 *hTmp = hSignal->Projection(2,1); | |
8c1c76e9 | 206 | TString hname = Form("hTOFsigma%s", istep == AliHFEdetPIDqa::kBeforePID ? "before" : "after"), |
207 | htitle = Form("Time-of-flight spectrum[#sigma] %s selection", istep == AliHFEdetPIDqa::kBeforePID ? "before" : "after"); | |
3a72645a | 208 | if(species > -1){ |
bf892a6a | 209 | hname += AliPID::ParticleName(species); |
210 | htitle += Form(" for %ss", AliPID::ParticleName(species)); | |
3a72645a | 211 | } |
bf892a6a | 212 | hTmp->SetName(hname.Data()); |
213 | hTmp->SetTitle(htitle.Data()); | |
3a72645a | 214 | hTmp->SetStats(kFALSE); |
215 | hTmp->GetXaxis()->SetTitle("p [GeV/c]"); | |
216 | hTmp->GetYaxis()->SetTitle("TOF time|_{el} - expected time|_{el} [#sigma]"); | |
217 | hSignal->GetAxis(3)->SetRange(0, hSignal->GetAxis(3)->GetNbins()); | |
218 | hSignal->GetAxis(0)->SetRange(0, hSignal->GetAxis(0)->GetNbins()); | |
219 | return hTmp; | |
220 | } | |
221 | ||
222 | //_________________________________________________________ | |
223 | TH1 *AliHFEtofPIDqa::GetHistogram(const char *name){ | |
224 | // | |
225 | // Get the histogram | |
226 | // | |
227 | if(!fHistos) return NULL; | |
228 | TObject *histo = fHistos->Get(name); | |
229 | if(!histo->InheritsFrom("TH1")) return NULL; | |
230 | return dynamic_cast<TH1 *>(histo); | |
231 | } | |
232 |