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 "AliESDEvent.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   AliMonitor(),
  45   fGeom(geom),
  46   fSDDDigitsCharge(NULL),
  47   fSSDDigitsCharge(NULL),
  48   fSDDClustersCharge(NULL),
  49   fSSDClustersCharge(NULL),
  50   fSPDNClustersVsModule(NULL),
  51   fSDDNClustersVsModule(NULL),
  52   fSSDNClustersVsModule(NULL),
  53   fNClustersVsLayer(NULL),
  54   fNTracks(NULL),
  55   fNTracksITSTPC(NULL),
  56   fTrackPt(NULL),
  57   fTrackEta(NULL),
  58   fTrackPhi(NULL),
  59   fTrackDEdxVsP(NULL)
  60
  61 {
  62 // create a ITS monitor object with the given geometry
  63
  64 }
  65
  66
  67 //_____________________________________________________________________________
  68 void AliMonitorITS::CreateHistos(TFolder* folder)
  69 {
  70 // create the ITS monitor histograms
  71
  72   fFolder = folder->AddFolder("ITS", "ITS");
  73
  74   fSDDDigitsCharge = CreateHisto1("SDDDigitsCharge",
  75                                   "charge distribution of SDD digits",
  76                                   128, 0, 256, "charge", "#Delta N/N",
  77                                   AliMonitorHisto::kNormEvents);
  78
  79   fSSDDigitsCharge = CreateHisto1("SSDDigitsCharge",
  80                                   "charge distribution of SSD digits",
  81                                   100, 0, 200, "charge", "#Delta N/N",
  82                                   AliMonitorHisto::kNormEvents);
  83
  84   fSDDClustersCharge = CreateHisto1("SDDClustersCharge",
  85                                     "charge distribution of SDD clusters",
  86                                     100, 0, 200, "charge", "#Delta N/N",
  87                                     AliMonitorHisto::kNormEvents);
  88
  89   fSSDClustersCharge = CreateHisto1("SSDClustersCharge",
  90                                     "charge distribution of SSD clusters",
  91                                     100, 0, 400, "charge", "#Delta N/N",
  92                                     AliMonitorHisto::kNormEvents);
  93
  94   Int_t nModulesSPD = fGeom->GetLastSPD() - fGeom->GetStartSPD() + 1;
  95   fSPDNClustersVsModule = CreateHisto1("SPDNClustersVsModule",
  96                                        "mean number of clusters per SPD module",
  97                                        nModulesSPD, -0.5, nModulesSPD-0.5,
  98                                        "module", "<N_{clusters}>",
  99                                        AliMonitorHisto::kNormEvents);
 100
 101   Int_t nModulesSDD = fGeom->GetLastSDD() - fGeom->GetStartSDD() + 1;
 102   fSDDNClustersVsModule = CreateHisto1("SDDNClustersVsModule",
 103                                        "mean number of clusters per SDD module",
 104                                        nModulesSDD, -0.5, nModulesSDD-0.5,
 105                                        "module", "<N_{clusters}>",
 106                                        AliMonitorHisto::kNormEvents);
 107
 108   Int_t nModulesSSD = fGeom->GetLastSSD() - fGeom->GetStartSSD() + 1;
 109   fSSDNClustersVsModule = CreateHisto1("SSDNClustersVsModule",
 110                                        "mean number of clusters per SSD module",
 111                                        nModulesSSD, -0.5, nModulesSSD-0.5,
 112                                        "module", "<N_{clusters}>",
 113                                        AliMonitorHisto::kNormEvents);
 114
 115   Int_t nLayer = fGeom->GetNlayers();
 116   fNClustersVsLayer = CreateHisto1("NClustersVsLayer",
 117                                    "mean number of clusters per layer",
 118                                    nLayer, 0.5, nLayer+0.5,
 119                                    "layer", "<N_{clusters}>",
 120                                    AliMonitorHisto::kNormEvents);
 121
 122   fNTracks = CreateHisto1("NTracks", "number of tracks per event",
 123                           300, 0, 30000, "N_{tracks}", "#Delta N/N",
 124                           AliMonitorHisto::kNormEvents);
 125
 126   fNTracksITSTPC = CreateHisto2("NTracksTPCITS",
 127                                 "correlation of number of ITS and TPC tracks per event",
 128                                 30, 0, 30000, 30, 0, 30000,
 129                                 "N_{tracks}(ITS)", "N_{tracks}(TPC)",
 130                                 "#Delta N/N", AliMonitorHisto::kNormEvents);
 131
 132   fTrackPt = CreateHisto1("TrackPt", "pt distribution of tracks",
 133                           90, 0, 3, "p_{t} [GeV/c]", "#Delta N/N",
 134                           AliMonitorHisto::kNormEntries);
 135
 136   fTrackEta = CreateHisto1("TrackEta", "eta distribution of tracks",
 137                            100, -2, 2, "#eta", "#Delta N/N",
 138                            AliMonitorHisto::kNormEntries);
 139
 140   fTrackPhi = CreateHisto1("TrackPhi", "phi distribution of tracks",
 141                            120, -180, 180, "#phi [#circ]", "#Delta N/N",
 142                            AliMonitorHisto::kNormEntries);
 143
 144   fTrackDEdxVsP = CreateHisto2("TrackDEdxVsP", "dE/dx of tracks",
 145                                100, 0, 3, 100, 0, 150,
 146                                "p [GeV/c]", "dE/dx", "#Delta N/N",
 147                                AliMonitorHisto::kNormEntries);
 148 }
 149
 150
 151 //_____________________________________________________________________________
 152 void AliMonitorITS::FillHistos(AliRunLoader* runLoader,
 153                                AliRawReader* rawReader, AliESDEvent* esd)
 154 {
 155 // fill the ITS monitor histogrms
 156
 157   rawReader->Reset();
 158   AliITSRawStreamSDD inputSDD(rawReader);
 159   while (inputSDD.Next()) {
 160     fSDDDigitsCharge->Fill(inputSDD.GetSignal());
 161   }
 162
 163   rawReader->Reset();
 164   AliITSRawStreamSSD inputSSD(rawReader);
 165   while (inputSSD.Next()) {
 166     fSSDDigitsCharge->Fill(inputSSD.GetSignal());
 167   }
 168
 169   AliLoader* itsLoader = runLoader->GetLoader("ITSLoader");
 170   if (!itsLoader) return;
 171
 172
 173   itsLoader->LoadRecPoints();
 174   TTree* clustersTree = itsLoader->TreeR();
 175   if (!clustersTree) return;
 176   TClonesArray* clusters = new TClonesArray("AliITSclusterV2");
 177   clustersTree->SetBranchAddress("Clusters", &clusters);
 178
 179   for (Int_t iModule = 0; iModule < clustersTree->GetEntries(); iModule++) {
 180     clustersTree->GetEntry(iModule);
 181     Int_t iLayer, iLadder, iDetector;
 182     fGeom->GetModuleId(iModule, iLayer, iLadder, iDetector);
 183
 184     for (Int_t j = 0; j < clusters->GetEntriesFast(); j++) {
 185       AliITSclusterV2* cluster = (AliITSclusterV2*) clusters->At(j);
 186       switch (iLayer) {
 187       case 1: case 2: {
 188         fSPDNClustersVsModule->Fill(iModule - fGeom->GetStartSPD());
 189         break;
 190       }
 191       case 3: case 4: {
 192         fSDDClustersCharge->Fill(cluster->GetQ());
 193         fSDDNClustersVsModule->Fill(iModule - fGeom->GetStartSDD());
 194         break;
 195       }
 196       case 5: case 6: {
 197         fSSDClustersCharge->Fill(cluster->GetQ());
 198         fSSDNClustersVsModule->Fill(iModule - fGeom->GetStartSSD());
 199         break;
 200       }
 201       }
 202       fNClustersVsLayer->Fill(iLayer);
 203     }
 204   }
 205
 206   delete clusters;
 207   itsLoader->UnloadRecPoints();
 208
 209
 210   Int_t nTracks = 0;
 211   Int_t nTPCTracks = 0;
 212   for (Int_t i = 0; i < esd->GetNumberOfTracks(); i++) {
 213     AliESDtrack* track = esd->GetTrack(i);
 214     if (!track) continue;
 215     if ((track->GetStatus() | AliESDtrack::kTPCin) != 0) nTPCTracks++;
 216     if ((track->GetStatus() | AliESDtrack::kITSin) == 0) continue;
 217     nTracks++;
 218
 219     Double_t pxyz[3];
 220     track->GetPxPyPz(pxyz);
 221     TVector3 pTrack(pxyz);
 222     fTrackPt->Fill(pTrack.Pt());
 223     fTrackEta->Fill(pTrack.Eta());
 224     fTrackPhi->Fill(pTrack.Phi() * TMath::RadToDeg());
 225     fTrackDEdxVsP->Fill(pTrack.Mag(), track->GetITSsignal());
 226   }
 227   fNTracks->Fill(nTracks);
 228   fNTracksITSTPC->Fill(nTracks, nTPCTracks);
 229 }