MONITOR/AliMonitorITS.cxx

   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 /* $Id$ */
  17
  18 ///////////////////////////////////////////////////////////////////////////////
  19 //                                                                           //
  20 //  This class creates and fills the monitor histograms for the ITS          //
  21 //                                                                           //
  22 ///////////////////////////////////////////////////////////////////////////////
  23
  24
  25 #include "AliMonitorITS.h"
  26 #include "AliMonitorHisto.h"
  27 #include "AliITSRawStreamSPD.h"
  28 #include "AliITSRawStreamSDD.h"
  29 #include "AliITSRawStreamSSD.h"
  30 #include "AliITSclusterV2.h"
  31 #include "AliITStrackV2.h"
  32
  33
  34 ClassImp(AliMonitorITS)
  35
  36
  37 //_____________________________________________________________________________
  38 AliMonitorITS::AliMonitorITS(AliITSgeom* geom)
  39 {
  40 // create a ITS monitor object with the given geometry
  41
  42   fGeom = geom;
  43 }
  44
  45
  46 //_____________________________________________________________________________
  47 void AliMonitorITS::CreateHistos(TFolder* folder)
  48 {
  49 // create the ITS monitor histograms
  50
  51   fFolder = folder->AddFolder("ITS", "ITS");
  52
  53   fSDDDigitsCharge = CreateHisto1("SDDDigitsCharge",
  54                                   "charge distribution of SDD digits",
  55                                   128, 0, 256, "charge", "#Delta N/N",
  56                                   AliMonitorHisto::kNormEvents);
  57
  58   fSSDDigitsCharge = CreateHisto1("SSDDigitsCharge",
  59                                   "charge distribution of SSD digits",
  60                                   100, 0, 200, "charge", "#Delta N/N",
  61                                   AliMonitorHisto::kNormEvents);
  62
  63   fSDDClustersCharge = CreateHisto1("SDDClustersCharge",
  64                                     "charge distribution of SDD clusters",
  65                                     100, 0, 200, "charge", "#Delta N/N",
  66                                     AliMonitorHisto::kNormEvents);
  67
  68   fSSDClustersCharge = CreateHisto1("SSDClustersCharge",
  69                                     "charge distribution of SSD clusters",
  70                                     100, 0, 400, "charge", "#Delta N/N",
  71                                     AliMonitorHisto::kNormEvents);
  72
  73   Int_t nModulesSPD = fGeom->GetLastSPD() - fGeom->GetStartSPD() + 1;
  74   fSPDNClustersVsModule = CreateHisto1("SPDNClustersVsModule",
  75                                        "mean number of clusters per SPD module",
  76                                        nModulesSPD, -0.5, nModulesSPD-0.5,
  77                                        "module", "<N_{clusters}>",
  78                                        AliMonitorHisto::kNormEvents);
  79
  80   Int_t nModulesSDD = fGeom->GetLastSDD() - fGeom->GetStartSDD() + 1;
  81   fSDDNClustersVsModule = CreateHisto1("SDDNClustersVsModule",
  82                                        "mean number of clusters per SDD module",
  83                                        nModulesSDD, -0.5, nModulesSDD-0.5,
  84                                        "module", "<N_{clusters}>",
  85                                        AliMonitorHisto::kNormEvents);
  86
  87   Int_t nModulesSSD = fGeom->GetLastSSD() - fGeom->GetStartSSD() + 1;
  88   fSSDNClustersVsModule = CreateHisto1("SSDNClustersVsModule",
  89                                        "mean number of clusters per SSD module",
  90                                        nModulesSSD, -0.5, nModulesSSD-0.5,
  91                                        "module", "<N_{clusters}>",
  92                                        AliMonitorHisto::kNormEvents);
  93
  94   Int_t nLayer = fGeom->GetNlayers();
  95   fNClustersVsLayer = CreateHisto1("NClustersVsLayer",
  96                                    "mean number of clusters per layer",
  97                                    nLayer, 0.5, nLayer+0.5,
  98                                    "layer", "<N_{clusters}>",
  99                                    AliMonitorHisto::kNormEvents);
 100
 101   fNTracks = CreateHisto1("NTracks", "number of tracks per event",
 102                           300, 0, 30000, "N_{tracks}", "#Delta N/N",
 103                           AliMonitorHisto::kNormEvents);
 104
 105   fNTracksITSTPC = CreateHisto2("NTracksTPCITS",
 106                                 "correlation of number of ITS and TPC tracks per event",
 107                                 30, 0, 30000, 30, 0, 30000,
 108                                 "N_{tracks}(ITS)", "N_{tracks}(TPC)",
 109                                 "#Delta N/N", AliMonitorHisto::kNormEvents);
 110
 111   fTrackPt = CreateHisto1("TrackPt", "pt distribution of tracks",
 112                           90, 0, 3, "p_{t} [GeV/c]", "#Delta N/N",
 113                           AliMonitorHisto::kNormEntries);
 114
 115   fTrackEta = CreateHisto1("TrackEta", "eta distribution of tracks",
 116                            100, -2, 2, "#eta", "#Delta N/N",
 117                            AliMonitorHisto::kNormEntries);
 118
 119   fTrackPhi = CreateHisto1("TrackPhi", "phi distribution of tracks",
 120                            120, 0, 360, "#phi [#circ]", "#Delta N/N",
 121                            AliMonitorHisto::kNormEntries);
 122
 123   fTrackDEdxVsP = CreateHisto2("TrackDEdxVsP", "dE/dx of tracks",
 124                                100, 0, 3, 100, 0, 150,
 125                                "p [GeV/c]", "dE/dx", "#Delta N/N",
 126                                AliMonitorHisto::kNormEntries);
 127 }
 128
 129
 130 //_____________________________________________________________________________
 131 void AliMonitorITS::FillHistos(AliRunLoader* runLoader,
 132                                AliRawReader* rawReader)
 133 {
 134 // fill the ITS monitor histogrms
 135
 136   rawReader->Reset();
 137   AliITSRawStreamSDD inputSDD(rawReader);
 138   while (inputSDD.Next()) {
 139     fSDDDigitsCharge->Fill(inputSDD.GetSignal());
 140   }
 141
 142   rawReader->Reset();
 143   AliITSRawStreamSSD inputSSD(rawReader);
 144   while (inputSSD.Next()) {
 145     fSSDDigitsCharge->Fill(inputSSD.GetSignal());
 146   }
 147
 148   AliLoader* itsLoader = runLoader->GetLoader("ITSLoader");
 149   if (!itsLoader) return;
 150
 151
 152   itsLoader->LoadRecPoints();
 153   TTree* clustersTree = itsLoader->TreeR();
 154   if (!clustersTree) return;
 155   TClonesArray* clusters = new TClonesArray("AliITSclusterV2");
 156   clustersTree->SetBranchAddress("Clusters", &clusters);
 157
 158   for (Int_t iModule = 0; iModule < clustersTree->GetEntries(); iModule++) {
 159     clustersTree->GetEntry(iModule);
 160     Int_t iLayer, iLadder, iDetector;
 161     fGeom->GetModuleId(iModule, iLayer, iLadder, iDetector);
 162
 163     for (Int_t j = 0; j < clusters->GetEntriesFast(); j++) {
 164       AliITSclusterV2* cluster = (AliITSclusterV2*) clusters->At(j);
 165       switch (iLayer) {
 166       case 1: case 2: {
 167         fSPDNClustersVsModule->Fill(iModule - fGeom->GetStartSPD());
 168         break;
 169       }
 170       case 3: case 4: {
 171         fSDDClustersCharge->Fill(cluster->GetQ());
 172         fSDDNClustersVsModule->Fill(iModule - fGeom->GetStartSDD());
 173         break;
 174       }
 175       case 5: case 6: {
 176         fSSDClustersCharge->Fill(cluster->GetQ());
 177         fSSDNClustersVsModule->Fill(iModule - fGeom->GetStartSSD());
 178         break;
 179       }
 180       }
 181       fNClustersVsLayer->Fill(iLayer);
 182     }
 183   }
 184
 185   delete clusters;
 186   itsLoader->UnloadRecPoints();
 187
 188
 189   itsLoader->LoadTracks();
 190   TTree* tracks = itsLoader->TreeT();
 191   if (!tracks) return;
 192   AliITStrackV2* track = new AliITStrackV2;
 193   tracks->SetBranchAddress("tracks", &track);
 194
 195   fNTracks->Fill(tracks->GetEntries());
 196   for (Int_t i = 0; i < tracks->GetEntries(); i++) {
 197     tracks->GetEntry(i);
 198     fTrackPt->Fill(track->Pt());
 199     fTrackEta->Fill(track->Eta());
 200     fTrackPhi->Fill(track->Phi() * TMath::RadToDeg());
 201     fTrackDEdxVsP->Fill(track->P(), track->GetdEdx());
 202   }
 203
 204   AliLoader* tpcLoader = runLoader->GetLoader("TPCLoader");
 205   if (tpcLoader) {
 206     tpcLoader->LoadTracks();
 207     TTree* tracksTPC = tpcLoader->TreeT();
 208     if (tracksTPC) {
 209       fNTracksITSTPC->Fill(tracks->GetEntries(), tracksTPC->GetEntries());
 210     }
 211     tpcLoader->UnloadTracks();
 212   }
 213
 214   delete track;
 215   itsLoader->UnloadTracks();
 216 }