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 ///////////////////////////////////////////////////////////////////////////////
25 #include "AliMonitorITS.h"
26 #include "AliMonitorHisto.h"
27 #include "AliITSgeom.h"
28 #include "AliITSRawStreamSDD.h"
29 #include "AliITSRawStreamSSD.h"
30 #include "AliITSclusterV2.h"
31 #include "AliRunLoader.h"
32 #include "AliRawReader.h"
38 ClassImp(AliMonitorITS)
41 //_____________________________________________________________________________
42 AliMonitorITS::AliMonitorITS(AliITSgeom* geom)
44 // create a ITS monitor object with the given geometry
50 //_____________________________________________________________________________
51 AliMonitorITS::AliMonitorITS(const AliMonitorITS& monitor) :
54 Fatal("AliMonitorITS", "copy constructor not implemented");
57 //_____________________________________________________________________________
58 AliMonitorITS& AliMonitorITS::operator = (const AliMonitorITS& /*monitor*/)
60 Fatal("operator =", "assignment operator not implemented");
64 //_____________________________________________________________________________
65 void AliMonitorITS::CreateHistos(TFolder* folder)
67 // create the ITS monitor histograms
69 fFolder = folder->AddFolder("ITS", "ITS");
71 fSDDDigitsCharge = CreateHisto1("SDDDigitsCharge",
72 "charge distribution of SDD digits",
73 128, 0, 256, "charge", "#Delta N/N",
74 AliMonitorHisto::kNormEvents);
76 fSSDDigitsCharge = CreateHisto1("SSDDigitsCharge",
77 "charge distribution of SSD digits",
78 100, 0, 200, "charge", "#Delta N/N",
79 AliMonitorHisto::kNormEvents);
81 fSDDClustersCharge = CreateHisto1("SDDClustersCharge",
82 "charge distribution of SDD clusters",
83 100, 0, 200, "charge", "#Delta N/N",
84 AliMonitorHisto::kNormEvents);
86 fSSDClustersCharge = CreateHisto1("SSDClustersCharge",
87 "charge distribution of SSD clusters",
88 100, 0, 400, "charge", "#Delta N/N",
89 AliMonitorHisto::kNormEvents);
91 Int_t nModulesSPD = fGeom->GetLastSPD() - fGeom->GetStartSPD() + 1;
92 fSPDNClustersVsModule = CreateHisto1("SPDNClustersVsModule",
93 "mean number of clusters per SPD module",
94 nModulesSPD, -0.5, nModulesSPD-0.5,
95 "module", "<N_{clusters}>",
96 AliMonitorHisto::kNormEvents);
98 Int_t nModulesSDD = fGeom->GetLastSDD() - fGeom->GetStartSDD() + 1;
99 fSDDNClustersVsModule = CreateHisto1("SDDNClustersVsModule",
100 "mean number of clusters per SDD module",
101 nModulesSDD, -0.5, nModulesSDD-0.5,
102 "module", "<N_{clusters}>",
103 AliMonitorHisto::kNormEvents);
105 Int_t nModulesSSD = fGeom->GetLastSSD() - fGeom->GetStartSSD() + 1;
106 fSSDNClustersVsModule = CreateHisto1("SSDNClustersVsModule",
107 "mean number of clusters per SSD module",
108 nModulesSSD, -0.5, nModulesSSD-0.5,
109 "module", "<N_{clusters}>",
110 AliMonitorHisto::kNormEvents);
112 Int_t nLayer = fGeom->GetNlayers();
113 fNClustersVsLayer = CreateHisto1("NClustersVsLayer",
114 "mean number of clusters per layer",
115 nLayer, 0.5, nLayer+0.5,
116 "layer", "<N_{clusters}>",
117 AliMonitorHisto::kNormEvents);
119 fNTracks = CreateHisto1("NTracks", "number of tracks per event",
120 300, 0, 30000, "N_{tracks}", "#Delta N/N",
121 AliMonitorHisto::kNormEvents);
123 fNTracksITSTPC = CreateHisto2("NTracksTPCITS",
124 "correlation of number of ITS and TPC tracks per event",
125 30, 0, 30000, 30, 0, 30000,
126 "N_{tracks}(ITS)", "N_{tracks}(TPC)",
127 "#Delta N/N", AliMonitorHisto::kNormEvents);
129 fTrackPt = CreateHisto1("TrackPt", "pt distribution of tracks",
130 90, 0, 3, "p_{t} [GeV/c]", "#Delta N/N",
131 AliMonitorHisto::kNormEntries);
133 fTrackEta = CreateHisto1("TrackEta", "eta distribution of tracks",
134 100, -2, 2, "#eta", "#Delta N/N",
135 AliMonitorHisto::kNormEntries);
137 fTrackPhi = CreateHisto1("TrackPhi", "phi distribution of tracks",
138 120, -180, 180, "#phi [#circ]", "#Delta N/N",
139 AliMonitorHisto::kNormEntries);
141 fTrackDEdxVsP = CreateHisto2("TrackDEdxVsP", "dE/dx of tracks",
142 100, 0, 3, 100, 0, 150,
143 "p [GeV/c]", "dE/dx", "#Delta N/N",
144 AliMonitorHisto::kNormEntries);
148 //_____________________________________________________________________________
149 void AliMonitorITS::FillHistos(AliRunLoader* runLoader,
150 AliRawReader* rawReader, AliESD* esd)
152 // fill the ITS monitor histogrms
155 AliITSRawStreamSDD inputSDD(rawReader);
156 while (inputSDD.Next()) {
157 fSDDDigitsCharge->Fill(inputSDD.GetSignal());
161 AliITSRawStreamSSD inputSSD(rawReader);
162 while (inputSSD.Next()) {
163 fSSDDigitsCharge->Fill(inputSSD.GetSignal());
166 AliLoader* itsLoader = runLoader->GetLoader("ITSLoader");
167 if (!itsLoader) return;
170 itsLoader->LoadRecPoints();
171 TTree* clustersTree = itsLoader->TreeR();
172 if (!clustersTree) return;
173 TClonesArray* clusters = new TClonesArray("AliITSclusterV2");
174 clustersTree->SetBranchAddress("Clusters", &clusters);
176 for (Int_t iModule = 0; iModule < clustersTree->GetEntries(); iModule++) {
177 clustersTree->GetEntry(iModule);
178 Int_t iLayer, iLadder, iDetector;
179 fGeom->GetModuleId(iModule, iLayer, iLadder, iDetector);
181 for (Int_t j = 0; j < clusters->GetEntriesFast(); j++) {
182 AliITSclusterV2* cluster = (AliITSclusterV2*) clusters->At(j);
185 fSPDNClustersVsModule->Fill(iModule - fGeom->GetStartSPD());
189 fSDDClustersCharge->Fill(cluster->GetQ());
190 fSDDNClustersVsModule->Fill(iModule - fGeom->GetStartSDD());
194 fSSDClustersCharge->Fill(cluster->GetQ());
195 fSSDNClustersVsModule->Fill(iModule - fGeom->GetStartSSD());
199 fNClustersVsLayer->Fill(iLayer);
204 itsLoader->UnloadRecPoints();
208 Int_t nTPCTracks = 0;
209 for (Int_t i = 0; i < esd->GetNumberOfTracks(); i++) {
210 AliESDtrack* track = esd->GetTrack(i);
211 if (!track) continue;
212 if ((track->GetStatus() | AliESDtrack::kTPCin) != 0) nTPCTracks++;
213 if ((track->GetStatus() | AliESDtrack::kITSin) == 0) continue;
217 track->GetPxPyPz(pxyz);
218 TVector3 pTrack(pxyz);
219 fTrackPt->Fill(pTrack.Pt());
220 fTrackEta->Fill(pTrack.Eta());
221 fTrackPhi->Fill(pTrack.Phi() * TMath::RadToDeg());
222 fTrackDEdxVsP->Fill(pTrack.Mag(), track->GetITSsignal());
224 fNTracks->Fill(nTracks);
225 fNTracksITSTPC->Fill(nTracks, nTPCTracks);