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659ef4f0 | 1 | // |
2 | // Class AliRsnCutPIDITS | |
3 | // | |
4 | // General implementation of a single cut strategy, which can be: | |
5 | // - a value contained in a given interval [--> IsBetween() ] | |
6 | // - a value equal to a given reference [--> MatchesValue()] | |
7 | // | |
8 | // In all cases, the reference value(s) is (are) given as data members | |
9 | // and each kind of cut requires a given value type (Int, UInt, Double), | |
10 | // but the cut check procedure is then automatized and chosen thanks to | |
11 | // an enumeration of the implemented cut types. | |
12 | // At the end, the user (or any other point which uses this object) has | |
13 | // to use the method IsSelected() to check if this cut has been passed. | |
14 | // | |
15 | // authors: Martin Vala (martin.vala@cern.ch) | |
16 | // Alberto Pulvirenti (alberto.pulvirenti@ct.infn.it) | |
17 | // | |
18 | ||
223b8750 | 19 | #include "AliAnalysisManager.h" |
20 | #include "AliESDInputHandler.h" | |
659ef4f0 | 21 | |
659ef4f0 | 22 | #include "AliRsnCutPIDITS.h" |
23 | ||
24 | ClassImp(AliRsnCutPIDITS) | |
25 | ||
26 | //_________________________________________________________________________________________________ | |
27 | AliRsnCutPIDITS::AliRsnCutPIDITS | |
80e49c8b | 28 | (const char *name, AliPID::EParticleType ref, Double_t min, Double_t max, Bool_t rejectOutside) : |
2a1c7696 | 29 | AliRsnCut(name, AliRsnCut::kDaughter, min, max), |
30 | fInitialized(kFALSE), | |
31 | fRejectOutside(rejectOutside), | |
32 | fMomMin(0.0), | |
33 | fMomMax(1E+20), | |
34 | fRefType(ref), | |
35 | fESDpid(), | |
36 | fAODpid() | |
659ef4f0 | 37 | { |
38 | // | |
39 | // Main constructor. | |
40 | // | |
659ef4f0 | 41 | } |
42 | ||
43 | //_________________________________________________________________________________________________ | |
44 | AliRsnCutPIDITS::AliRsnCutPIDITS | |
45 | (const AliRsnCutPIDITS& copy) : | |
2a1c7696 | 46 | AliRsnCut(copy), |
47 | fInitialized(kFALSE), | |
48 | fRejectOutside(copy.fRejectOutside), | |
49 | fMomMin(copy.fMomMin), | |
50 | fMomMax(copy.fMomMax), | |
51 | fRefType(copy.fRefType), | |
52 | fESDpid(copy.fESDpid), | |
53 | fAODpid(copy.fAODpid) | |
659ef4f0 | 54 | { |
55 | // | |
56 | // Copy constructor. | |
57 | // | |
659ef4f0 | 58 | } |
59 | ||
60 | //_________________________________________________________________________________________________ | |
61 | AliRsnCutPIDITS& AliRsnCutPIDITS::operator=(const AliRsnCutPIDITS& copy) | |
62 | { | |
63 | // | |
64 | // Assignment operator | |
65 | // | |
66 | ||
2a1c7696 | 67 | AliRsnCut::operator=(copy); |
659ef4f0 | 68 | |
2a1c7696 | 69 | fInitialized = kFALSE; |
70 | fRejectOutside = copy.fRejectOutside; | |
71 | fMomMin = copy.fMomMin; | |
72 | fMomMax = copy.fMomMax; | |
73 | fRefType = copy.fRefType; | |
74 | fESDpid = copy.fESDpid; | |
75 | fAODpid = copy.fAODpid; | |
76 | ||
77 | return (*this); | |
659ef4f0 | 78 | } |
79 | ||
80 | //_________________________________________________________________________________________________ | |
81 | void AliRsnCutPIDITS::SetMC(Bool_t yn) | |
82 | { | |
83 | // | |
84 | // Properly set the PID response | |
85 | // | |
86 | ||
2a1c7696 | 87 | AliITSPIDResponse itsresponse(yn); |
88 | ||
89 | fESDpid.GetITSResponse() = itsresponse; | |
90 | fAODpid.GetITSResponse() = itsresponse; | |
659ef4f0 | 91 | } |
92 | ||
93 | //_________________________________________________________________________________________________ | |
94 | Bool_t AliRsnCutPIDITS::IsSelected(TObject *object) | |
95 | { | |
96 | // | |
97 | // Cut checker. | |
98 | // | |
99 | ||
2a1c7696 | 100 | // initialize if needed |
101 | if (!fInitialized) Initialize(); | |
102 | ||
103 | // coherence check | |
104 | if (!TargetOK(object)) return kFALSE; | |
105 | ||
106 | // reject not ITS tracks | |
107 | // status is checked in the same way for all tracks | |
108 | AliVTrack *vtrack = dynamic_cast<AliVTrack*>(fDaughter->GetRef()); | |
109 | if (!vtrack) { | |
110 | AliDebug(AliLog::kDebug + 2, Form("Impossible to process an object of type '%s'. Cut applicable only to ESD/AOD tracks", fDaughter->GetRef()->ClassName())); | |
111 | return kFALSE; | |
112 | } | |
113 | ||
114 | // check status, to know it track is an ITS+TPC or ITS standalone | |
115 | // and reject it if it is of none of them | |
116 | Bool_t isSA = kFALSE; | |
117 | if (IsTPC(vtrack)) isSA = kFALSE; | |
118 | else if (IsSA(vtrack)) isSA = kTRUE; | |
119 | else { | |
120 | AliDebug(AliLog::kDebug + 2, "Status flags unmatched"); | |
121 | return kFALSE; | |
122 | } | |
123 | ||
124 | // common evaluation variables | |
125 | Int_t k, nITSpidLayers = 0; | |
126 | Double_t mom = vtrack->P(); | |
127 | AliESDtrack *esdTrack = fDaughter->GetRefESDtrack(); | |
128 | AliAODTrack *aodTrack = fDaughter->GetRefAODtrack(); | |
129 | ||
130 | // check momentum | |
131 | if (mom < fMomMin || mom > fMomMax) { | |
132 | AliDebug(AliLog::kDebug + 2, Form("Track momentum = %.5f, outside allowed range", mom)); | |
133 | return (!fRejectOutside); | |
134 | } | |
135 | ||
136 | // count number of PID layers... | |
137 | if (esdTrack) { | |
138 | UChar_t itsCluMap = esdTrack->GetITSClusterMap(); | |
139 | for (k = 2; k < 6; k++) if (itsCluMap & (1 << k)) ++nITSpidLayers; | |
140 | } else if (aodTrack) { | |
141 | for (k = 2; k < 6; k++) if (TESTBIT(aodTrack->GetITSClusterMap(), k)) ++nITSpidLayers; | |
142 | } else { | |
143 | AliDebug(AliLog::kDebug + 2, Form("Impossible to process an object of type '%s'. Cut applicable only to ESD/AOD tracks", fDaughter->GetRef()->ClassName())); | |
144 | return kFALSE; | |
145 | } | |
146 | // ...and reject tracks where it is smaller than 3 | |
147 | if (nITSpidLayers < 3) { | |
148 | AliDebug(AliLog::kDebug + 2, "Rejecting track with too few ITS pid layers"); | |
149 | return kFALSE; | |
150 | } | |
151 | ||
152 | // assign PID nsigmas to default cut check value | |
153 | // since bad object types are rejected before, here we have an ESD track or AOD track | |
154 | if (esdTrack) | |
155 | fCutValueD = fESDpid.GetITSResponse().GetNumberOfSigmas(mom, esdTrack->GetITSsignal(), fRefType, nITSpidLayers, isSA); | |
156 | else | |
157 | fCutValueD = fAODpid.NumberOfSigmasITS(aodTrack, fRefType); | |
158 | ||
159 | // use default cut checking method | |
160 | return OkRangeD(); | |
659ef4f0 | 161 | } |
162 | ||
163 | //_________________________________________________________________________________________________ | |
164 | void AliRsnCutPIDITS::Print(const Option_t *) const | |
165 | { | |
166 | // | |
167 | // Print information on this cut | |
168 | // | |
169 | ||
2a1c7696 | 170 | AliInfo(Form("Cut name : %s", GetName())); |
171 | AliInfo(Form("--> cut range (nsigma) : %.3f %.3f", fMinD, fMaxD)); | |
172 | AliInfo(Form("--> momentum range : %.3f %.3f", fMomMin, fMomMax)); | |
173 | AliInfo(Form("--> tracks outside range are: %s", (fRejectOutside ? "rejected" : "accepted"))); | |
659ef4f0 | 174 | } |
223b8750 | 175 | |
176 | //_________________________________________________________________________________________________ | |
177 | void AliRsnCutPIDITS::Initialize() | |
178 | { | |
179 | // | |
180 | // Initialize ESD pid object from global one | |
181 | // | |
182 | ||
2a1c7696 | 183 | AliAnalysisManager *mgr = AliAnalysisManager::GetAnalysisManager(); |
184 | AliESDInputHandler *handler = dynamic_cast<AliESDInputHandler*>(mgr->GetInputEventHandler()); | |
185 | if (handler) { | |
186 | AliESDpid *pid = handler->GetESDpid(); | |
187 | fESDpid = (*pid); | |
188 | } | |
189 | ||
190 | fInitialized = kTRUE; | |
223b8750 | 191 | } |