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455957bc | 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: AliT0CalibSeasonTimeShift.cxx 42881 2010-08-16 10:59:14Z alla $ */ | |
17 | ||
18 | /////////////////////////////////////////////////////////////////////////////// | |
19 | // // | |
20 | // class for T0 calibration TM-AC-AM_6-02-2006 | |
21 | // equalize time shift for each time CFD channel | |
22 | // // | |
23 | /////////////////////////////////////////////////////////////////////////////// | |
24 | ||
25 | #include "AliT0CalibSeasonTimeShift.h" | |
26 | #include "AliLog.h" | |
27 | #include <TFile.h> | |
28 | #include <TMath.h> | |
29 | #include <TF1.h> | |
30 | #include <TProfile.h> | |
31 | #include <iostream> | |
32 | ||
33 | ClassImp(AliT0CalibSeasonTimeShift) | |
34 | ||
35 | //________________________________________________________________ | |
36 | AliT0CalibSeasonTimeShift::AliT0CalibSeasonTimeShift():TNamed() | |
37 | { | |
38 | // | |
57b90263 | 39 | for (Int_t i=0; i<4; i++) |
40 | fMeanPar[i] = fSigmaPar[i] = 0; | |
455957bc | 41 | } |
42 | ||
43 | //________________________________________________________________ | |
44 | AliT0CalibSeasonTimeShift::AliT0CalibSeasonTimeShift(const char* name):TNamed() | |
45 | { | |
46 | //constructor | |
47 | ||
48 | TString namst = "Calib_"; | |
49 | namst += name; | |
50 | SetName(namst.Data()); | |
57b90263 | 51 | SetTitle(namst.Data()); |
52 | ||
53 | for (Int_t i=0; i<4; i++) | |
54 | fMeanPar[i] = fSigmaPar[i] = 0; | |
55 | ||
455957bc | 56 | } |
57 | ||
58 | //________________________________________________________________ | |
59 | AliT0CalibSeasonTimeShift::AliT0CalibSeasonTimeShift(const AliT0CalibSeasonTimeShift& calibda):TNamed(calibda) | |
60 | ||
61 | { | |
62 | // copy constructor | |
63 | SetName(calibda.GetName()); | |
64 | SetTitle(calibda.GetName()); | |
57b90263 | 65 | ((AliT0CalibSeasonTimeShift &) calibda).Copy(*this); |
455957bc | 66 | |
67 | ||
68 | } | |
69 | ||
70 | //________________________________________________________________ | |
71 | AliT0CalibSeasonTimeShift &AliT0CalibSeasonTimeShift::operator =(const AliT0CalibSeasonTimeShift& calibda) | |
72 | { | |
73 | // assignment operator | |
74 | SetName(calibda.GetName()); | |
75 | SetTitle(calibda.GetName()); | |
57b90263 | 76 | if (this != &calibda) ((AliT0CalibSeasonTimeShift &) calibda).Copy(*this); |
455957bc | 77 | |
78 | return *this; | |
79 | } | |
80 | ||
81 | //________________________________________________________________ | |
82 | AliT0CalibSeasonTimeShift::~AliT0CalibSeasonTimeShift() | |
83 | { | |
84 | // | |
85 | // destrictor | |
86 | } | |
87 | ||
88 | ||
89 | //________________________________________________________________ | |
90 | void AliT0CalibSeasonTimeShift::Print(Option_t*) const | |
91 | { | |
92 | // print time values | |
93 | ||
94 | printf("\n ---- T0 results ----\n\n"); | |
95 | printf(" (T0A+T0C)/2 = %f; T0A = %f; T0C = %f; resolution = %f \n", fMeanPar[0], fMeanPar[1],fMeanPar[2],fMeanPar[3]); | |
96 | printf(" sigma(T0A+T0C)/2 = %f; sigma(T0 = %f; sigma(T0C) = %f; sigma(resolution) = %f \n" , fSigmaPar[0], fSigmaPar[1], fSigmaPar[2],fSigmaPar[3]); | |
97 | ||
98 | } | |
99 | ||
100 | //________________________________________________________________ | |
cd8ca88e | 101 | Bool_t AliT0CalibSeasonTimeShift::SetT0Par(Float_t par[4],Float_t spar[4]) |
455957bc | 102 | { |
cd8ca88e | 103 | Bool_t ok=false; |
104 | for (Int_t i=0; i<4; i++) | |
455957bc | 105 | { |
106 | fMeanPar[i] = par[i]; | |
107 | fSigmaPar[i] = spar[i]; | |
cd8ca88e | 108 | if ( fSigmaPar[i] == 0 || fSigmaPar[i] > 500) ok = false; |
455957bc | 109 | } |
cd8ca88e | 110 | return ok; |
455957bc | 111 | } |
112 | ||
113 | //________________________________________________________________ | |
32d3e409 | 114 | Int_t AliT0CalibSeasonTimeShift::SetT0Par(const char* filePhys, Float_t *cdbtime) |
455957bc | 115 | { |
cdd58213 | 116 | // compute shifts fo T0A, T0C, T0AC and resolution |
117 | //Status : writeok: | |
118 | // 0 OK | |
119 | // 2000 - no data file | |
120 | // 300 no one histogram or it is empty | |
121 | //-100 peak is very narrow | |
122 | ||
cd8ca88e | 123 | Float_t mean, sigma; |
32d3e409 | 124 | Int_t ok = 0; |
bb54f817 | 125 | TH1F *cfd = NULL; |
61bd03f6 | 126 | TObjArray * tzeroObj = NULL; |
dd92f5b8 | 127 | |
455957bc | 128 | gFile = TFile::Open(filePhys); |
129 | if(!gFile) { | |
130 | AliError("No input PHYS data found "); | |
32d3e409 | 131 | ok = 2000; |
455957bc | 132 | } |
61bd03f6 | 133 | else { |
134 | // gFile->ls(); | |
135 | // TDirectory *dr = (TDirectory*) gFile->Get("T0Calib"); | |
136 | tzeroObj = dynamic_cast<TObjArray*>(gFile->Get("T0Calib")); | |
cd8ca88e | 137 | TString histname[4]={"fTzeroORAplusORC", "fTzeroORA", "fTzeroORC", "fResolution"}; |
138 | for (Int_t i=0; i<4; i++) | |
b0ab3f59 | 139 | { |
bb54f817 | 140 | if(cfd) cfd->Reset(); |
61bd03f6 | 141 | if(tzeroObj) |
142 | cfd = (TH1F*)tzeroObj->FindObject( histname[i].Data()); | |
bb54f817 | 143 | else |
dd92f5b8 | 144 | cfd = (TH1F*)gFile ->Get(histname[i].Data()); |
145 | ||
146 | if(!cfd) { | |
32d3e409 | 147 | ok=300; |
148 | AliError(Form("no histograms collected for %s", histname[i].Data())); | |
b9dd81a7 | 149 | return ok; |
dd92f5b8 | 150 | } |
bb54f817 | 151 | if(cfd) { |
32d3e409 | 152 | if( cfd->GetEntries() == 0) { |
153 | ok=300; | |
154 | AliError(Form("%s histogram is empty", histname[i].Data())); | |
155 | return ok; | |
156 | } | |
cd8ca88e | 157 | GetMeanAndSigma(cfd, mean, sigma); |
84fe4d28 | 158 | if (sigma == 0 || sigma > 500 || cfd->GetEntries()<200 ){ |
32d3e409 | 159 | ok = -100; |
18086258 | 160 | fMeanPar[i] = cdbtime[i]; |
84fe4d28 | 161 | fSigmaPar[i] = -1; |
18086258 | 162 | } |
84fe4d28 | 163 | if ( sigma > 0 && sigma < 500 && cfd->GetEntries()>200) |
cd8ca88e | 164 | { |
b9dd81a7 | 165 | fMeanPar[i] = mean; |
cd8ca88e | 166 | fSigmaPar[i] = sigma; |
cd8ca88e | 167 | } |
455957bc | 168 | } |
b0ab3f59 | 169 | } |
61bd03f6 | 170 | } |
171 | gFile->Close(); | |
172 | delete gFile; | |
cd8ca88e | 173 | return ok; |
174 | } | |
175 | //________________________________________________________________________ | |
176 | void AliT0CalibSeasonTimeShift::GetMeanAndSigma(TH1F* hist, Float_t &mean, Float_t &sigma) { | |
177 | ||
cdd58213 | 178 | const double window =3.; //fit window |
cd8ca88e | 179 | |
180 | double meanEstimate, sigmaEstimate; | |
181 | int maxBin; | |
182 | maxBin = hist->GetMaximumBin(); //position of maximum | |
183 | meanEstimate = hist->GetBinCenter( maxBin); // mean of gaussian sitting in maximum | |
184 | sigmaEstimate = hist->GetRMS(); | |
185 | TF1* fit= new TF1("fit","gaus", meanEstimate - window*sigmaEstimate, meanEstimate + window*sigmaEstimate); | |
186 | fit->SetParameters(hist->GetBinContent(maxBin), meanEstimate, sigmaEstimate); | |
cdd58213 | 187 | hist->Fit("fit","R",""); |
cd8ca88e | 188 | |
189 | mean = (Float_t) fit->GetParameter(1); | |
190 | sigma = (Float_t) fit->GetParameter(2); | |
191 | ||
192 | delete fit; | |
455957bc | 193 | } |