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 **************************************************************************/
18 ///////////////////////////////////////////////////////////////////////////////
20 // This class creates and fills the monitor histograms for the ITS //
22 ///////////////////////////////////////////////////////////////////////////////
29 #include "AliESDEvent.h"
30 #include "AliESDtrack.h"
31 #include "AliITSRawStreamSDD.h"
32 #include "AliITSRawStreamSSD.h"
33 #include "AliITSclusterV2.h"
34 #include "AliITSgeom.h"
35 #include "AliMonitorHisto.h"
36 #include "AliMonitorITS.h"
37 #include "AliRawReader.h"
38 #include "AliRunLoader.h"
40 ClassImp(AliMonitorITS)
43 //_____________________________________________________________________________
44 AliMonitorITS::AliMonitorITS(AliITSgeom* geom):
47 fSDDDigitsCharge(NULL),
48 fSSDDigitsCharge(NULL),
49 fSDDClustersCharge(NULL),
50 fSSDClustersCharge(NULL),
51 fSPDNClustersVsModule(NULL),
52 fSDDNClustersVsModule(NULL),
53 fSSDNClustersVsModule(NULL),
54 fNClustersVsLayer(NULL),
63 // create a ITS monitor object with the given geometry
68 //_____________________________________________________________________________
69 void AliMonitorITS::CreateHistos(TFolder* folder)
71 // create the ITS monitor histograms
73 fFolder = folder->AddFolder("ITS", "ITS");
75 fSDDDigitsCharge = CreateHisto1("SDDDigitsCharge",
76 "charge distribution of SDD digits",
77 128, 0, 256, "charge", "#Delta N/N",
78 AliMonitorHisto::kNormEvents);
80 fSSDDigitsCharge = CreateHisto1("SSDDigitsCharge",
81 "charge distribution of SSD digits",
82 100, 0, 200, "charge", "#Delta N/N",
83 AliMonitorHisto::kNormEvents);
85 fSDDClustersCharge = CreateHisto1("SDDClustersCharge",
86 "charge distribution of SDD clusters",
87 100, 0, 200, "charge", "#Delta N/N",
88 AliMonitorHisto::kNormEvents);
90 fSSDClustersCharge = CreateHisto1("SSDClustersCharge",
91 "charge distribution of SSD clusters",
92 100, 0, 400, "charge", "#Delta N/N",
93 AliMonitorHisto::kNormEvents);
95 Int_t nModulesSPD = fGeom->GetLastSPD() - fGeom->GetStartSPD() + 1;
96 fSPDNClustersVsModule = CreateHisto1("SPDNClustersVsModule",
97 "mean number of clusters per SPD module",
98 nModulesSPD, -0.5, nModulesSPD-0.5,
99 "module", "<N_{clusters}>",
100 AliMonitorHisto::kNormEvents);
102 Int_t nModulesSDD = fGeom->GetLastSDD() - fGeom->GetStartSDD() + 1;
103 fSDDNClustersVsModule = CreateHisto1("SDDNClustersVsModule",
104 "mean number of clusters per SDD module",
105 nModulesSDD, -0.5, nModulesSDD-0.5,
106 "module", "<N_{clusters}>",
107 AliMonitorHisto::kNormEvents);
109 Int_t nModulesSSD = fGeom->GetLastSSD() - fGeom->GetStartSSD() + 1;
110 fSSDNClustersVsModule = CreateHisto1("SSDNClustersVsModule",
111 "mean number of clusters per SSD module",
112 nModulesSSD, -0.5, nModulesSSD-0.5,
113 "module", "<N_{clusters}>",
114 AliMonitorHisto::kNormEvents);
116 Int_t nLayer = fGeom->GetNlayers();
117 fNClustersVsLayer = CreateHisto1("NClustersVsLayer",
118 "mean number of clusters per layer",
119 nLayer, 0.5, nLayer+0.5,
120 "layer", "<N_{clusters}>",
121 AliMonitorHisto::kNormEvents);
123 fNTracks = CreateHisto1("NTracks", "number of tracks per event",
124 300, 0, 30000, "N_{tracks}", "#Delta N/N",
125 AliMonitorHisto::kNormEvents);
127 fNTracksITSTPC = CreateHisto2("NTracksTPCITS",
128 "correlation of number of ITS and TPC tracks per event",
129 30, 0, 30000, 30, 0, 30000,
130 "N_{tracks}(ITS)", "N_{tracks}(TPC)",
131 "#Delta N/N", AliMonitorHisto::kNormEvents);
133 fTrackPt = CreateHisto1("TrackPt", "pt distribution of tracks",
134 90, 0, 3, "p_{t} [GeV/c]", "#Delta N/N",
135 AliMonitorHisto::kNormEntries);
137 fTrackEta = CreateHisto1("TrackEta", "eta distribution of tracks",
138 100, -2, 2, "#eta", "#Delta N/N",
139 AliMonitorHisto::kNormEntries);
141 fTrackPhi = CreateHisto1("TrackPhi", "phi distribution of tracks",
142 120, -180, 180, "#phi [#circ]", "#Delta N/N",
143 AliMonitorHisto::kNormEntries);
145 fTrackDEdxVsP = CreateHisto2("TrackDEdxVsP", "dE/dx of tracks",
146 100, 0, 3, 100, 0, 150,
147 "p [GeV/c]", "dE/dx", "#Delta N/N",
148 AliMonitorHisto::kNormEntries);
152 //_____________________________________________________________________________
153 void AliMonitorITS::FillHistos(AliRunLoader* runLoader,
154 AliRawReader* rawReader, AliESDEvent* esd)
156 // fill the ITS monitor histogrms
159 AliITSRawStreamSDD inputSDD(rawReader);
160 while (inputSDD.Next()) {
161 fSDDDigitsCharge->Fill(inputSDD.GetSignal());
165 AliITSRawStreamSSD inputSSD(rawReader);
166 while (inputSSD.Next()) {
167 fSSDDigitsCharge->Fill(inputSSD.GetSignal());
170 AliLoader* itsLoader = runLoader->GetLoader("ITSLoader");
171 if (!itsLoader) return;
174 itsLoader->LoadRecPoints();
175 TTree* clustersTree = itsLoader->TreeR();
176 if (!clustersTree) return;
177 TClonesArray* clusters = new TClonesArray("AliITSclusterV2");
178 clustersTree->SetBranchAddress("Clusters", &clusters);
180 for (Int_t iModule = 0; iModule < clustersTree->GetEntries(); iModule++) {
181 clustersTree->GetEntry(iModule);
182 Int_t iLayer, iLadder, iDetector;
183 fGeom->GetModuleId(iModule, iLayer, iLadder, iDetector);
185 for (Int_t j = 0; j < clusters->GetEntriesFast(); j++) {
186 AliITSclusterV2* cluster = (AliITSclusterV2*) clusters->At(j);
189 fSPDNClustersVsModule->Fill(iModule - fGeom->GetStartSPD());
193 fSDDClustersCharge->Fill(cluster->GetQ());
194 fSDDNClustersVsModule->Fill(iModule - fGeom->GetStartSDD());
198 fSSDClustersCharge->Fill(cluster->GetQ());
199 fSSDNClustersVsModule->Fill(iModule - fGeom->GetStartSSD());
203 fNClustersVsLayer->Fill(iLayer);
208 itsLoader->UnloadRecPoints();
212 Int_t nTPCTracks = 0;
213 for (Int_t i = 0; i < esd->GetNumberOfTracks(); i++) {
214 AliESDtrack* track = esd->GetTrack(i);
215 if (!track) continue;
216 if ((track->GetStatus() | AliESDtrack::kTPCin) != 0) nTPCTracks++;
217 if ((track->GetStatus() | AliESDtrack::kITSin) == 0) continue;
221 track->GetPxPyPz(pxyz);
222 TVector3 pTrack(pxyz);
223 fTrackPt->Fill(pTrack.Pt());
224 fTrackEta->Fill(pTrack.Eta());
225 fTrackPhi->Fill(pTrack.Phi() * TMath::RadToDeg());
226 fTrackDEdxVsP->Fill(pTrack.Mag(), track->GetITSsignal());
228 fNTracks->Fill(nTracks);
229 fNTracksITSTPC->Fill(nTracks, nTPCTracks);