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 TPC //
22 ///////////////////////////////////////////////////////////////////////////////
25 #include "AliMonitorTPC.h"
26 #include "AliMonitorDataTPC.h"
27 #include "AliMonitorHisto.h"
28 #include "AliMonitorTrend.h"
29 #include "AliTPCParam.h"
30 #include "AliTPCRawStream.h"
31 #include "AliTPCClustersRow.h"
32 #include "AliTPCclusterMI.h"
33 #include "AliTPCtrack.h"
34 #include "AliRunLoader.h"
35 #include "AliRawReader.h"
40 ClassImp(AliMonitorTPC)
43 //_____________________________________________________________________________
44 AliMonitorTPC::AliMonitorTPC(AliTPCParam* param)
46 // create a TPC monitor object with the given parameters
49 fData = new AliMonitorDataTPC(10000);
52 //_____________________________________________________________________________
53 AliMonitorTPC::AliMonitorTPC(const AliMonitorTPC& monitor) :
56 Fatal("AliMonitorTPC", "copy constructor not implemented");
59 //_____________________________________________________________________________
60 AliMonitorTPC& AliMonitorTPC::operator = (const AliMonitorTPC& /*monitor*/)
62 Fatal("operator =", "assignment operator not implemented");
66 //_____________________________________________________________________________
67 AliMonitorTPC::~AliMonitorTPC()
73 //_____________________________________________________________________________
74 void AliMonitorTPC::CreateHistos(TFolder* folder)
76 // create the TPC monitor histograms
78 fFolder = folder->AddFolder("TPC", "TPC");
80 fPadsCharge = CreateHisto1("PadsCharge", "charge distribution of pads",
81 100, 0, 200, "charge", "#Delta N/N",
82 AliMonitorHisto::kNormEvents);
84 fClustersCharge = CreateHisto1("ClustersCharge",
85 "charge distribution of clusters",
86 100, 0, 1000, "charge", "#Delta N/N",
87 AliMonitorHisto::kNormEvents);
89 Int_t nRows = fParam->GetNRowLow() + fParam->GetNRowUp();
90 fNClustersVsRow = CreateHisto1("NClustersVsRow",
91 "mean number of clusters per pad row",
92 nRows, -0.5, nRows-0.5,
93 "pad row", "<N_{clusters}>",
94 AliMonitorHisto::kNormEvents);
96 Int_t nSector = fParam->GetNInnerSector();
97 fNClustersVsSector = CreateHisto1("NClustersVsSector",
98 "mean number of clusters per sector",
99 nSector, -0.5, nSector-0.5,
100 "sector", "<N_{clusters}>",
101 AliMonitorHisto::kNormEvents);
103 fNTracks = CreateTrend("NTracks", "number of tracks per event",
106 fTrackPt = CreateHisto1("TrackPt", "pt distribution of tracks",
107 90, 0, 3, "p_{t} [GeV/c]", "#Delta N/N",
108 AliMonitorHisto::kNormNone);
110 fTrackEta = CreateHisto1("TrackEta", "eta distribution of tracks",
111 100, -2, 2, "#eta", "#Delta N/N",
112 AliMonitorHisto::kNormEntries);
114 fTrackPhi = CreateHisto1("TrackPhi", "phi distribution of tracks",
115 120, 0, 360, "#phi [#circ]", "#Delta N/N",
116 AliMonitorHisto::kNormEntries);
117 fTrackPhi->SetDescription("The phi distribution should be flat on average.\nIf it is not flat check for dead TPC sectors.");
119 fTrackNCl = CreateHisto1("TrackNCl", "Number of clusters per track",
120 200, 0, 200, "N_{clusters}", "#Delta N/N",
121 AliMonitorHisto::kNormNone);
123 fTrackDEdxVsP = CreateHisto2("TrackDEdxVsP", "dE/dx of tracks",
124 100, 0, 3, 100, 0, 200,
125 "p [GeV/c]", "dE/dx", "#Delta N/N",
126 AliMonitorHisto::kNormEntries);
128 fTrackDEdx = CreateHisto1("TrackDEdx", "dE/dx of tracks with 0.4<p<1.0 GeV/c",
130 "dE/dx", "#Delta N/N",
131 AliMonitorHisto::kNormEntries);
133 fTrackEtaVsPhi = CreateHisto2("TrackEtaVsPhi", "#phi vs #eta",
134 20, -1, 1, 25, 0, 360,
135 "#eta", "#phi", "#Delta N/N",
136 AliMonitorHisto::kNormNone);
138 fPtEtaVsPhi = CreateHisto2("PtEtaVsPhi", "#phi vs #eta",
139 20, -1, 1, 25, 0, 360,
140 "#eta", "#phi", "#Delta N/N",
141 AliMonitorHisto::kNormNone);
146 //_____________________________________________________________________________
147 void AliMonitorTPC::CreateBranches(TTree* tree)
149 // create a branch with TPC variables
151 tree->Branch("TPC", "AliMonitorDataTPC", &fData);
155 //_____________________________________________________________________________
156 void AliMonitorTPC::FillHistos(AliRunLoader* runLoader,
157 AliRawReader* rawReader)
159 // fill the TPC monitor histogrms
162 AliTPCRawStream input(rawReader);
163 while (input.Next()) {
164 fPadsCharge->Fill(input.GetSignal());
167 AliLoader* tpcLoader = runLoader->GetLoader("TPCLoader");
168 if (!tpcLoader) return;
171 tpcLoader->LoadRecPoints();
172 TTree* clusters = tpcLoader->TreeR();
173 if (!clusters) return;
174 AliTPCClustersRow* clustersRow = new AliTPCClustersRow;
175 clustersRow->SetClass("AliTPCclusterMI");
176 clusters->SetBranchAddress("Segment", &clustersRow);
178 for (Int_t i = 0; i < clusters->GetEntries(); i++) {
179 clusters->GetEntry(i);
181 fParam->AdjustSectorRow(clustersRow->GetID(), iSector, iRow);
182 if (iSector >= fParam->GetNInnerSector()) {
183 iRow += fParam->GetNRowLow();
184 iSector -= fParam->GetNInnerSector();
187 TObjArray* array = clustersRow->GetArray();
188 for (Int_t j = 0; j < array->GetEntriesFast(); j++) {
189 AliTPCclusterMI* cluster = (AliTPCclusterMI*) array->At(j);
190 fClustersCharge->Fill(cluster->GetQ());
191 fNClustersVsRow->Fill(iRow);
192 fNClustersVsSector->Fill(iSector);
195 fNClustersVsSector->ScaleErrorBy(10.);
198 tpcLoader->UnloadRecPoints();
201 tpcLoader->LoadTracks();
202 TTree* tracks = tpcLoader->TreeT();
204 AliTPCtrack* track = new AliTPCtrack;
205 tracks->SetBranchAddress("tracks", &track);
207 Int_t nTracks = (Int_t) tracks->GetEntries();
208 fNTracks->Fill(nTracks);
209 fData->SetNTracks(nTracks);
210 for (Int_t i = 0; i < nTracks; i++) {
212 fTrackPt->Fill(track->Pt());
213 fTrackEta->Fill(track->Eta());
214 fTrackPhi->Fill(track->Phi() * TMath::RadToDeg());
216 fTrackEtaVsPhi->Fill(track->Eta(),track->Phi() * TMath::RadToDeg());
217 fPtEtaVsPhi->Fill(track->Eta(),track->Phi() * TMath::RadToDeg(),track->Pt());
219 fTrackNCl->Fill(track->GetNumberOfClusters());
220 fTrackDEdxVsP->Fill(track->P(), track->GetdEdx());
221 if(track->P()>0.4 && track->P()<1.0)
222 fTrackDEdx->Fill(track->GetdEdx());
224 fData->SetData(i, track->Pt(), track->Eta(),
225 track->Phi() * TMath::RadToDeg());
229 tpcLoader->UnloadTracks();