Update of ACORDE-QA-Raw data histograms (now they go from -0.5 to 59.5)
[u/mrichter/AliRoot.git] / MUON / MUONRefit.C
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7deb8eb0 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/// \ingroup macros
19/// \file MUONRefit.C
20/// \brief Macro for refitting ESD tracks from ESD pads
21///
22/// \author Philippe Pillot, SUBATECH
23
24#if !defined(__CINT__) || defined(__MAKECINT__)
25#include <TStopwatch.h>
26#include <TFile.h>
27#include <TTree.h>
28#include <TString.h>
29#include <Riostream.h>
30#include <TGeoManager.h>
31#include <TRandom.h>
32#include <TROOT.h>
33
34// STEER includes
7deb8eb0 35#include "AliESDEvent.h"
36#include "AliESDMuonTrack.h"
7deb8eb0 37#include "AliCDBManager.h"
38#include "AliGeomManager.h"
39
40// MUON includes
a99c3449 41#include "AliMUONCDB.h"
7deb8eb0 42#include "AliMUONRecoParam.h"
43#include "AliMUONESDInterface.h"
44#include "AliMUONRefitter.h"
45#include "AliMUONVDigit.h"
7deb8eb0 46#include "AliMUONTrack.h"
47#include "AliMUONVTrackStore.h"
48#include "AliMUONTrackParam.h"
7deb8eb0 49#endif
50
51const Int_t printLevel = 1;
52
7deb8eb0 53TTree* GetESDTree(TFile *esdFile);
54
55//-----------------------------------------------------------------------
a99c3449 56void MUONRefit(Int_t nevents = -1, const char* esdFileNameIn = "AliESDs.root", const char* esdFileNameOut = "AliESDs_New.root",
57 const char* geoFilename = "geometry.root", const char* ocdbPath = "local://$ALICE_ROOT/OCDB")
7deb8eb0 58{
a99c3449 59 /// Example of muon refitting:
7deb8eb0 60 /// refit ESD tracks from ESD pads (i.e. re-clusterized the attached ESD clusters);
61 /// reset the charge of the digit using their raw charge before refitting;
62 /// compare results with original ESD tracks;
63 /// write results in a new ESD file
64
7deb8eb0 65 // open the ESD file and tree
66 TFile* esdFile = TFile::Open(esdFileNameIn);
67 TTree* esdTree = GetESDTree(esdFile);
68
ad3c6eda 69 // create the ESD output file and tree
70 TFile* newESDFile = TFile::Open(esdFileNameOut, "RECREATE");
71 newESDFile->SetCompressionLevel(2);
7deb8eb0 72 TTree* newESDTree = esdTree->CloneTree(0);
73
74 // connect ESD event to the ESD tree
75 AliESDEvent* esd = new AliESDEvent();
76 esd->ReadFromTree(esdTree);
a99c3449 77
78 // get run number
79 if (esdTree->GetEvent(0) <= 0) {
80 Error("MUONRefit", "no ESD object found for event 0");
81 return;
82 }
83 Int_t runNumber = esd->GetRunNumber();
84
85 // Import TGeo geometry
86 if (!gGeoManager) {
87 AliGeomManager::LoadGeometry(geoFilename);
88 if (!gGeoManager) {
89 Error("MUONRefit", "getting geometry from file %s failed", "generated/galice.root");
90 exit(-1);
91 }
92 }
93
94 // load necessary data from OCDB
95 AliCDBManager::Instance()->SetDefaultStorage(ocdbPath);
96 AliCDBManager::Instance()->SetRun(runNumber);
97 if (!AliMUONCDB::LoadField()) return;
98 if (!AliMUONCDB::LoadMapping(kTRUE)) return;
99
100 // reconstruction parameters for the refitting
101 AliMUONRecoParam* recoParam = AliMUONRecoParam::GetLowFluxParam();
102 Info("MUONRefit", "\n Reconstruction parameters for refitting:");
103 recoParam->Print("FULL");
104
105 AliMUONESDInterface esdInterface;
106 AliMUONRefitter refitter(recoParam);
107 refitter.Connect(&esdInterface);
108 gRandom->SetSeed(1);
109
7deb8eb0 110 // timer start...
111 TStopwatch timer;
112
113 // Loop over ESD events
114 if (nevents > 0) nevents = TMath::Min(nevents,(Int_t)esdTree->GetEntries());
115 else nevents = (Int_t)esdTree->GetEntries();
116 for (Int_t iEvent = 0; iEvent < nevents; iEvent++) {
117 if (printLevel>0) cout<<endl<<" ****************event #"<<iEvent+1<<"****************"<<endl;
118
119 //----------------------------------------------//
120 // -------------- process event --------------- //
121 //----------------------------------------------//
122 // get the ESD of current event
123 esdTree->GetEvent(iEvent);
124 if (!esd) {
17e52d9f 125 Error("MUONRefit", "no ESD object found for event %d", iEvent);
7deb8eb0 126 return;
127 }
128 Int_t nTracks = (Int_t)esd->GetNumberOfMuonTracks();
129 if (nTracks < 1) continue;
130
131 // load the current event
a99c3449 132 esdInterface.LoadEvent(*esd, kFALSE);
7deb8eb0 133
134 // loop over digit to modify their charge
135 AliMUONVDigit *digit;
136 TIter next(esdInterface.CreateDigitIterator());
b1fea02e 137 while ((digit = static_cast<AliMUONVDigit*>(next()))) {
138 digit->SetCharge(digit->ADC());
139 digit->Calibrated(kFALSE);
140 }
7deb8eb0 141
142 // refit the tracks from digits
143 AliMUONVTrackStore* newTrackStore = refitter.ReconstructFromDigits();
144
145 //----------------------------------------------//
146 // ------ fill new ESD and print results ------ //
147 //----------------------------------------------//
148 // loop over the list of ESD tracks
149 TClonesArray *esdTracks = (TClonesArray*) esd->FindListObject("MuonTracks");
150 for (Int_t iTrack = 0; iTrack < nTracks; iTrack++) {
151
152 // get the ESD track
153 AliESDMuonTrack* esdTrack = (AliESDMuonTrack*) esdTracks->UncheckedAt(iTrack);
b1fea02e 154
155 // skip ghost tracks (leave them unchanged in the new ESD file)
156 if (!esdTrack->ContainTrackerData()) continue;
157
7deb8eb0 158 // get the corresponding MUON track
630711ed 159 AliMUONTrack* track = esdInterface.FindTrack(esdTrack->GetUniqueID());
b1fea02e 160
7deb8eb0 161 // Find the corresponding re-fitted MUON track
162 AliMUONTrack* newTrack = (AliMUONTrack*) newTrackStore->FindObject(esdTrack->GetUniqueID());
163
164 // replace the content of the current ESD track or remove it if the refitting has failed
165 if (newTrack) {
166 Double_t vertex[3] = {esdTrack->GetNonBendingCoor(), esdTrack->GetBendingCoor(), esdTrack->GetZ()};
167 AliMUONESDInterface::MUONToESD(*newTrack, *esdTrack, vertex, esdInterface.GetDigits());
168 } else {
169 esdTracks->Remove(esdTrack);
170 }
171
172 // print initial and re-fitted track parameters at first cluster if any
173 if (printLevel>0) {
174 cout<<" ----------------track #"<<iTrack+1<<"----------------"<<endl;
175 cout<<"before refit:"<<endl;
176 AliMUONTrackParam *param = (AliMUONTrackParam*) track->GetTrackParamAtCluster()->First();
177 param->Print("FULL");
178 if (printLevel>1) param->GetCovariances().Print();
179 if (!newTrack) continue;
180 cout<<"after refit:"<<endl;
181 param = (AliMUONTrackParam*) newTrack->GetTrackParamAtCluster()->First();
182 param->Print("FULL");
183 if (printLevel>1) param->GetCovariances().Print();
184 cout<<" ----------------------------------------"<<endl;
185 }
186
187 }
188
189 // free memory
190 delete newTrackStore;
191
192 // fill new ESD tree with new tracks
193 esdTracks->Compress();
194 newESDTree->Fill();
195
196 if (printLevel>0) cout<<" ****************************************"<<endl;
197 }
198
199 // ...timer stop
200 timer.Stop();
201
202 // write output ESD tree
ad3c6eda 203 newESDFile->cd();
7deb8eb0 204 newESDTree->Write();
ad3c6eda 205 delete newESDTree;
7deb8eb0 206 newESDFile->Close();
207
208 // free memory
209 esdFile->Close();
7deb8eb0 210 delete esd;
a99c3449 211 delete recoParam;
7deb8eb0 212
213 cout<<endl<<"time to refit: R:"<<timer.RealTime()<<" C:"<<timer.CpuTime()<<endl<<endl;
214}
215
216//-----------------------------------------------------------------------
7deb8eb0 217TTree* GetESDTree(TFile *esdFile)
218{
219 /// Check that the file is properly open
220 /// Return pointer to the ESD Tree
221
222 if (!esdFile || !esdFile->IsOpen()) {
223 Error("GetESDTree", "opening ESD file failed");
224 exit(-1);
225 }
226
227 TTree* tree = (TTree*) esdFile->Get("esdTree");
228 if (!tree) {
229 Error("GetESDTree", "no ESD tree found");
230 exit(-1);
231 }
232
233 return tree;
234
235}
236