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 #include <TFolder.h>
  25 #include <TTree.h>
  26 #include <TVector3.h>
  27
  28 #include "AliLog.h"
  29 #include "AliESD.h"
  30 #include "AliITSRawStreamSDD.h"
  31 #include "AliITSRawStreamSSD.h"
  32 #include "AliITSclusterV2.h"
  33 #include "AliITSgeom.h"
  34 #include "AliMonitorHisto.h"
  35 #include "AliMonitorITS.h"
  36 #include "AliRawReader.h"
  37 #include "AliRunLoader.h"
  38
  39 ClassImp(AliMonitorITS)
  40
  41
  42 //_____________________________________________________________________________
  43 AliMonitorITS::AliMonitorITS(AliITSgeom* geom)
  44 {
  45 // create a ITS monitor object with the given geometry
  46
  47   fGeom = geom;
  48 }
  49
  50
  51 //_____________________________________________________________________________
  52 AliMonitorITS::AliMonitorITS(const AliMonitorITS& monitor) :
  53   AliMonitor(monitor)
  54 {
  55   AliFatal("copy constructor not implemented");
  56 }
  57
  58 //_____________________________________________________________________________
  59 AliMonitorITS& AliMonitorITS::operator = (const AliMonitorITS& /*monitor*/)
  60 {
  61   AliFatal("assignment operator not implemented");
  62   return *this;
  63 }
  64
  65 //_____________________________________________________________________________
  66 void AliMonitorITS::CreateHistos(TFolder* folder)
  67 {
  68 // create the ITS monitor histograms
  69
  70   fFolder = folder->AddFolder("ITS", "ITS");
  71
  72   fSDDDigitsCharge = CreateHisto1("SDDDigitsCharge",
  73                                   "charge distribution of SDD digits",
  74                                   128, 0, 256, "charge", "#Delta N/N",
  75                                   AliMonitorHisto::kNormEvents);
  76
  77   fSSDDigitsCharge = CreateHisto1("SSDDigitsCharge",
  78                                   "charge distribution of SSD digits",
  79                                   100, 0, 200, "charge", "#Delta N/N",
  80                                   AliMonitorHisto::kNormEvents);
  81
  82   fSDDClustersCharge = CreateHisto1("SDDClustersCharge",
  83                                     "charge distribution of SDD clusters",
  84                                     100, 0, 200, "charge", "#Delta N/N",
  85                                     AliMonitorHisto::kNormEvents);
  86
  87   fSSDClustersCharge = CreateHisto1("SSDClustersCharge",
  88                                     "charge distribution of SSD clusters",
  89                                     100, 0, 400, "charge", "#Delta N/N",
  90                                     AliMonitorHisto::kNormEvents);
  91
  92   Int_t nModulesSPD = fGeom->GetLastSPD() - fGeom->GetStartSPD() + 1;
  93   fSPDNClustersVsModule = CreateHisto1("SPDNClustersVsModule",
  94                                        "mean number of clusters per SPD module",
  95                                        nModulesSPD, -0.5, nModulesSPD-0.5,
  96                                        "module", "<N_{clusters}>",
  97                                        AliMonitorHisto::kNormEvents);
  98
  99   Int_t nModulesSDD = fGeom->GetLastSDD() - fGeom->GetStartSDD() + 1;
 100   fSDDNClustersVsModule = CreateHisto1("SDDNClustersVsModule",
 101                                        "mean number of clusters per SDD module",
 102                                        nModulesSDD, -0.5, nModulesSDD-0.5,
 103                                        "module", "<N_{clusters}>",
 104                                        AliMonitorHisto::kNormEvents);
 105
 106   Int_t nModulesSSD = fGeom->GetLastSSD() - fGeom->GetStartSSD() + 1;
 107   fSSDNClustersVsModule = CreateHisto1("SSDNClustersVsModule",
 108                                        "mean number of clusters per SSD module",
 109                                        nModulesSSD, -0.5, nModulesSSD-0.5,
 110                                        "module", "<N_{clusters}>",
 111                                        AliMonitorHisto::kNormEvents);
 112
 113   Int_t nLayer = fGeom->GetNlayers();
 114   fNClustersVsLayer = CreateHisto1("NClustersVsLayer",
 115                                    "mean number of clusters per layer",
 116                                    nLayer, 0.5, nLayer+0.5,
 117                                    "layer", "<N_{clusters}>",
 118                                    AliMonitorHisto::kNormEvents);
 119
 120   fNTracks = CreateHisto1("NTracks", "number of tracks per event",
 121                           300, 0, 30000, "N_{tracks}", "#Delta N/N",
 122                           AliMonitorHisto::kNormEvents);
 123
 124   fNTracksITSTPC = CreateHisto2("NTracksTPCITS",
 125                                 "correlation of number of ITS and TPC tracks per event",
 126                                 30, 0, 30000, 30, 0, 30000,
 127                                 "N_{tracks}(ITS)", "N_{tracks}(TPC)",
 128                                 "#Delta N/N", AliMonitorHisto::kNormEvents);
 129
 130   fTrackPt = CreateHisto1("TrackPt", "pt distribution of tracks",
 131                           90, 0, 3, "p_{t} [GeV/c]", "#Delta N/N",
 132                           AliMonitorHisto::kNormEntries);
 133
 134   fTrackEta = CreateHisto1("TrackEta", "eta distribution of tracks",
 135                            100, -2, 2, "#eta", "#Delta N/N",
 136                            AliMonitorHisto::kNormEntries);
 137
 138   fTrackPhi = CreateHisto1("TrackPhi", "phi distribution of tracks",
 139                            120, -180, 180, "#phi [#circ]", "#Delta N/N",
 140                            AliMonitorHisto::kNormEntries);
 141
 142   fTrackDEdxVsP = CreateHisto2("TrackDEdxVsP", "dE/dx of tracks",
 143                                100, 0, 3, 100, 0, 150,
 144                                "p [GeV/c]", "dE/dx", "#Delta N/N",
 145                                AliMonitorHisto::kNormEntries);
 146 }
 147
 148
 149 //_____________________________________________________________________________
 150 void AliMonitorITS::FillHistos(AliRunLoader* runLoader,
 151                                AliRawReader* rawReader, AliESD* esd)
 152 {
 153 // fill the ITS monitor histogrms
 154
 155   rawReader->Reset();
 156   AliITSRawStreamSDD inputSDD(rawReader);
 157   while (inputSDD.Next()) {
 158     fSDDDigitsCharge->Fill(inputSDD.GetSignal());
 159   }
 160
 161   rawReader->Reset();
 162   AliITSRawStreamSSD inputSSD(rawReader);
 163   while (inputSSD.Next()) {
 164     fSSDDigitsCharge->Fill(inputSSD.GetSignal());
 165   }
 166
 167   AliLoader* itsLoader = runLoader->GetLoader("ITSLoader");
 168   if (!itsLoader) return;
 169
 170
 171   itsLoader->LoadRecPoints();
 172   TTree* clustersTree = itsLoader->TreeR();
 173   if (!clustersTree) return;
 174   TClonesArray* clusters = new TClonesArray("AliITSclusterV2");
 175   clustersTree->SetBranchAddress("Clusters", &clusters);
 176
 177   for (Int_t iModule = 0; iModule < clustersTree->GetEntries(); iModule++) {
 178     clustersTree->GetEntry(iModule);
 179     Int_t iLayer, iLadder, iDetector;
 180     fGeom->GetModuleId(iModule, iLayer, iLadder, iDetector);
 181
 182     for (Int_t j = 0; j < clusters->GetEntriesFast(); j++) {
 183       AliITSclusterV2* cluster = (AliITSclusterV2*) clusters->At(j);
 184       switch (iLayer) {
 185       case 1: case 2: {
 186         fSPDNClustersVsModule->Fill(iModule - fGeom->GetStartSPD());
 187         break;
 188       }
 189       case 3: case 4: {
 190         fSDDClustersCharge->Fill(cluster->GetQ());
 191         fSDDNClustersVsModule->Fill(iModule - fGeom->GetStartSDD());
 192         break;
 193       }
 194       case 5: case 6: {
 195         fSSDClustersCharge->Fill(cluster->GetQ());
 196         fSSDNClustersVsModule->Fill(iModule - fGeom->GetStartSSD());
 197         break;
 198       }
 199       }
 200       fNClustersVsLayer->Fill(iLayer);
 201     }
 202   }
 203
 204   delete clusters;
 205   itsLoader->UnloadRecPoints();
 206
 207
 208   Int_t nTracks = 0;
 209   Int_t nTPCTracks = 0;
 210   for (Int_t i = 0; i < esd->GetNumberOfTracks(); i++) {
 211     AliESDtrack* track = esd->GetTrack(i);
 212     if (!track) continue;
 213     if ((track->GetStatus() | AliESDtrack::kTPCin) != 0) nTPCTracks++;
 214     if ((track->GetStatus() | AliESDtrack::kITSin) == 0) continue;
 215     nTracks++;
 216
 217     Double_t pxyz[3];
 218     track->GetPxPyPz(pxyz);
 219     TVector3 pTrack(pxyz);
 220     fTrackPt->Fill(pTrack.Pt());
 221     fTrackEta->Fill(pTrack.Eta());
 222     fTrackPhi->Fill(pTrack.Phi() * TMath::RadToDeg());
 223     fTrackDEdxVsP->Fill(pTrack.Mag(), track->GetITSsignal());
 224   }
 225   fNTracks->Fill(nTracks);
 226   fNTracksITSTPC->Fill(nTracks, nTPCTracks);
 227 }