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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 | #include "AliMUONDigitCalibrator.h" | |
19 | ||
20 | #include "AliLog.h" | |
21 | #include "AliMUONCalibrationData.h" | |
22 | #include "AliMUONConstants.h" | |
23 | #include "AliMUONData.h" | |
24 | #include "AliMUONDigit.h" | |
25 | #include "AliMUONPadStatusMaker.h" | |
26 | #include "AliMUONPadStatusMapMaker.h" | |
27 | #include "AliMUONV2DStore.h" | |
28 | #include "AliMUONVCalibParam.h" | |
29 | #include "TClonesArray.h" | |
30 | ||
31 | /// \class AliMUONDigitCalibrator | |
32 | /// Class used to calibrate digits (either real or simulated ones). | |
33 | /// | |
34 | /// The calibration consists of subtracting the pedestal | |
35 | /// and multiplying by a gain, so that | |
36 | /// Signal = (ADC-pedestal)*gain | |
37 | /// | |
38 | /// Please note also that for the moment, if a digit lies on a dead channel | |
39 | /// we remove this digit from the list of digits. | |
40 | /// FIXME: this has to be revisited. By using the AliMUONDigit::fFlags we | |
41 | /// should in principle flag a digit as bad w/o removing it, but this | |
42 | /// then requires some changes in the cluster finder to deal with this extra | |
43 | /// information correctly (e.g. to set a quality for the cluster if it contains | |
44 | /// bad digits). | |
45 | /// | |
46 | /// \author Laurent Aphecetche | |
47 | ||
48 | ||
49 | /// \cond CLASSIMP | |
50 | ClassImp(AliMUONDigitCalibrator) | |
51 | /// \endcond | |
52 | ||
53 | //_____________________________________________________________________________ | |
54 | AliMUONDigitCalibrator::AliMUONDigitCalibrator(AliMUONData* muonData, | |
55 | AliMUONCalibrationData* calib, | |
56 | Bool_t createAndUseStatusMap) | |
57 | : TTask("AliMUONDigitCalibrator","Raw digit calibration"), | |
58 | fData(muonData), | |
59 | fCalibrationData(calib), | |
60 | fStatusMap(0x0) | |
61 | { | |
62 | /// ctor. This class needs the muonData to get access to the digit, | |
63 | /// and the calibrationData to get access to calibration parameters. | |
64 | ||
65 | if (!calib) throw; | |
66 | ||
67 | if (createAndUseStatusMap) | |
68 | { | |
69 | AliMUONPadStatusMaker maker(*calib); | |
70 | ||
71 | // this is here that we decide on our "goodness" policy, i.e. | |
72 | // what do we call an invalid pad (a pad maybe bad because it's HV | |
73 | // was too low, or its pedestals too high, etc..) | |
74 | // | |
75 | maker.SetHVSt12Limits(1300,1600); | |
76 | maker.SetHVSt345Limits(1500,2000); | |
77 | maker.SetPedMeanLimits(50,200); | |
78 | maker.SetPedSigmaLimits(0.1,3); | |
79 | ||
80 | // From this set of limits, compute the status of all tracker pads. | |
81 | AliMUONV2DStore* status = maker.MakeStatus(); | |
82 | ||
83 | AliMUONPadStatusMapMaker mapMaker; | |
84 | ||
85 | Int_t mask(0x8000000); | |
86 | //FIXME: fake one (consider dead only if ped mean too high or hv switch off) | |
87 | ||
88 | fStatusMap = mapMaker.MakePadStatusMap(*status,mask); | |
89 | ||
90 | delete status; | |
91 | } | |
92 | else | |
93 | { | |
94 | // make a fake (empty) status map | |
95 | fStatusMap = AliMUONPadStatusMapMaker::MakeEmptyPadStatusMap(); | |
96 | } | |
97 | } | |
98 | ||
99 | //_____________________________________________________________________________ | |
100 | AliMUONDigitCalibrator::~AliMUONDigitCalibrator() | |
101 | { | |
102 | /// dtor. | |
103 | delete fStatusMap; | |
104 | } | |
105 | ||
106 | //_____________________________________________________________________________ | |
107 | void | |
108 | AliMUONDigitCalibrator::Exec(Option_t*) | |
109 | { | |
110 | /// Main method. | |
111 | /// We loop on tracking chambers (i.e. we do nothing for trigger) | |
112 | /// and for each digit in that chamber, we calibrate it : | |
113 | /// a) we set its status map and if status is bad, set the signal to zero | |
114 | /// b) we then apply pedestal and gain corrections. | |
115 | ||
116 | for ( Int_t ch = 0; ch < AliMUONConstants::NTrackingCh(); ++ch ) | |
117 | { | |
118 | TClonesArray* digitArray = fData->Digits(ch); | |
119 | Int_t nDigits = digitArray->GetEntriesFast(); | |
120 | for ( Int_t d = 0; d < nDigits; ++d ) | |
121 | { | |
122 | AliMUONDigit* digit = | |
123 | static_cast<AliMUONDigit*>(digitArray->UncheckedAt(d)); | |
124 | ||
125 | AliMUONVCalibParam* deadmap = static_cast<AliMUONVCalibParam*> | |
126 | (fStatusMap->Get(digit->DetElemId(),digit->ManuId())); | |
127 | Int_t statusMap = deadmap->ValueAsInt(digit->ManuChannel()); | |
128 | digit->SetStatusMap(statusMap); | |
129 | if ( ( statusMap & AliMUONPadStatusMapMaker::SelfDeadMask() ) != 0 ) // pad itself is bad (not testing its neighbours at this stage) | |
130 | { | |
131 | digit->SetSignal(0); | |
132 | AliWarning(Form("Channel detElemId %d manuId %d " | |
133 | "manuChannel %d is bad %x",digit->DetElemId(),digit->ManuId(), | |
134 | digit->ManuChannel(),digit->StatusMap())); | |
135 | continue; | |
136 | } | |
137 | ||
138 | // If the channel is good, go on with the calibration itself. | |
139 | ||
140 | AliMUONVCalibParam* pedestal = static_cast<AliMUONVCalibParam*> | |
141 | (fCalibrationData->Pedestals(digit->DetElemId(),digit->ManuId())); | |
142 | ||
143 | AliMUONVCalibParam* gain = static_cast<AliMUONVCalibParam*> | |
144 | (fCalibrationData->Gains(digit->DetElemId(),digit->ManuId())); | |
145 | ||
146 | if (!pedestal) | |
147 | { | |
148 | AliFatal(Form("Got a null ped object for DE,manu=%d,%d", | |
149 | digit->DetElemId(),digit->ManuId())); | |
150 | ||
151 | } | |
152 | if (!gain) | |
153 | { | |
154 | AliFatal(Form("Got a null gain object for DE,manu=%d,%d", | |
155 | digit->DetElemId(),digit->ManuId())); | |
156 | } | |
157 | ||
158 | Int_t manuChannel = digit->ManuChannel(); | |
159 | Float_t adc = digit->Signal(); | |
160 | Float_t padc = adc-pedestal->ValueAsFloat(manuChannel,0); | |
161 | if ( padc < 3.0*pedestal->ValueAsFloat(manuChannel,1) ) | |
162 | { | |
163 | padc = 0.0; | |
164 | } | |
165 | Float_t charge = padc*gain->ValueAsFloat(manuChannel,0); | |
166 | digit->SetSignal(charge); | |
167 | Int_t saturation = gain->ValueAsInt(manuChannel,1); | |
168 | if ( charge >= saturation ) | |
169 | { | |
170 | digit->Saturated(kTRUE); | |
171 | } | |
172 | } | |
173 | } | |
174 | } |