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[PWGCF] Add configurable flags for ITS layer selection #15915

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[PWGCF] Add configurable flags for ITS layer selection #15915

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9f52839
Add configurable flags for ITS layer selection
Luzhiyongg Apr 22, 2026
edfbe19
add ITS layers configurations
Luzhiyongg Apr 22, 2026
edad2ea
o2-linter fix
Luzhiyongg Apr 22, 2026
9356c10
fix o2-linter
Luzhiyongg Apr 22, 2026
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18 changes: 15 additions & 3 deletions PWGCF/Flow/Tasks/flowMc.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -102,7 +102,8 @@ struct FlowMc {
O2_DEFINE_CONFIGURABLE(cfgTrackDensityCorrSlopeFactor, float, 1.0f, "A factor to scale the track density efficiency slope")
O2_DEFINE_CONFIGURABLE(cfgRecoEvRejectMC, bool, false, "reject both MC and Reco events when reco do not pass")
O2_DEFINE_CONFIGURABLE(cfgRecoEvSel8, bool, false, "require sel8 for reconstruction events")
O2_DEFINE_CONFIGURABLE(cfgRecoEvkIsGoodITSLayersAll, bool, false, "require kIsGoodITSLayersAll for reconstruction events")
O2_DEFINE_CONFIGURABLE(cfgRecoEvkIsGoodITSLayers, bool, true, "cut time intervals with dead ITS staves")
O2_DEFINE_CONFIGURABLE(cfgRecoEvkIsGoodITSLayersFlag, int, 0, "0: kIsGoodITSLayersAll; 1: kIsGoodITSLayer0123; 2: kIsGoodITSLayer3")
O2_DEFINE_CONFIGURABLE(cfgRecoEvkNoSameBunchPileup, bool, false, "require kNoSameBunchPileup for reconstruction events")
O2_DEFINE_CONFIGURABLE(cfgRecoEvSelkIsGoodZvtxFT0vsPV, bool, false, "removes collisions with large differences between z of PV by tracks and z of PV from FT0 A-C time difference, use this cut at low multiplicities with caution")
O2_DEFINE_CONFIGURABLE(cfgRecoEvSelkNoITSROFrameBorder, bool, false, "reject events at ITS ROF border")
Expand Down Expand Up @@ -151,6 +152,12 @@ struct FlowMc {
TF1* funcV2;
TF1* funcV3;
TF1* funcV4;
enum GoodITSLayersFlag {
kITSLayersAll,
kITSLayer0123,
kITSLayer3,
kCount_ITSLayersFlag
};

// Connect to ccdb
Service<ccdb::BasicCCDBManager> ccdb;
Expand Down Expand Up @@ -426,10 +433,15 @@ struct FlowMc {
// https://indico.cern.ch/event/1396220/#1-event-selection-with-its-rof
return 0;
}
if (cfgRecoEvkIsGoodITSLayersAll && !collision.selection_bit(o2::aod::evsel::kIsGoodITSLayersAll)) {
if (cfgRecoEvkIsGoodITSLayers) {
// from Jan 9 2025 AOT meeting
// cut time intervals with dead ITS staves
return 0;
if (cfgRecoEvkIsGoodITSLayersFlag == kITSLayersAll && !collision.selection_bit(o2::aod::evsel::kIsGoodITSLayersAll))
return 0;
if (cfgRecoEvkIsGoodITSLayersFlag == kITSLayer0123 && !collision.selection_bit(o2::aod::evsel::kIsGoodITSLayer0123))
return 0;
if (cfgRecoEvkIsGoodITSLayersFlag == kITSLayer3 && !collision.selection_bit(o2::aod::evsel::kIsGoodITSLayer3))
return 0;
}
if (cfgRecoEvSelkIsGoodZvtxFT0vsPV && !collision.selection_bit(o2::aod::evsel::kIsGoodZvtxFT0vsPV)) {
// removes collisions with large differences between z of PV by tracks and z of PV from FT0 A-C time difference
Expand Down
29 changes: 21 additions & 8 deletions PWGCF/Flow/Tasks/flowTask.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -111,14 +111,21 @@ struct FlowTask {
kTrCutNch = 0,
kTrCutObs = 1
};
enum GoodITSLayersFlag {
kITSLayersAll,
kITSLayer0123,
kITSLayer3,
kCount_ITSLayersFlag
};
// Additional events selection flags
O2_DEFINE_CONFIGURABLE(cfgUseAdditionalEventCut, bool, false, "Use additional event cut on mult correlations")
O2_DEFINE_CONFIGURABLE(cfgEvSelkNoSameBunchPileup, bool, false, "rejects collisions which are associated with the same found-by-T0 bunch crossing")
O2_DEFINE_CONFIGURABLE(cfgEvSelkNoITSROFrameBorder, bool, false, "reject events at ITS ROF border")
O2_DEFINE_CONFIGURABLE(cfgEvSelkNoTimeFrameBorder, bool, false, "reject events at TF border")
O2_DEFINE_CONFIGURABLE(cfgEvSelkIsGoodZvtxFT0vsPV, bool, false, "removes collisions with large differences between z of PV by tracks and z of PV from FT0 A-C time difference, use this cut at low multiplicities with caution")
O2_DEFINE_CONFIGURABLE(cfgEvSelkNoCollInTimeRangeStandard, bool, false, "no collisions in specified time range")
O2_DEFINE_CONFIGURABLE(cfgEvSelkIsGoodITSLayersAll, bool, true, "cut time intervals with dead ITS staves")
O2_DEFINE_CONFIGURABLE(cfgEvSelkIsGoodITSLayers, bool, true, "cut time intervals with dead ITS staves")
O2_DEFINE_CONFIGURABLE(cfgEvSelkIsGoodITSLayersFlag, int, 0, "0: kIsGoodITSLayersAll; 1: kIsGoodITSLayer0123; 2: kIsGoodITSLayer3")
O2_DEFINE_CONFIGURABLE(cfgEvSelkNoCollInRofStandard, bool, false, "no other collisions in this Readout Frame with per-collision multiplicity above threshold")
O2_DEFINE_CONFIGURABLE(cfgEvSelkNoHighMultCollInPrevRof, bool, false, "veto an event if FT0C amplitude in previous ITS ROF is above threshold")
O2_DEFINE_CONFIGURABLE(cfgEvSelMultCorrelation, bool, true, "Multiplicity correlation cut")
Expand Down Expand Up @@ -346,7 +353,8 @@ struct FlowTask {
registry.get<TH1>(HIST("hEventCountSpecific"))->GetXaxis()->SetBinLabel(4, "kNoTimeFrameBorder");
registry.get<TH1>(HIST("hEventCountSpecific"))->GetXaxis()->SetBinLabel(5, "kIsGoodZvtxFT0vsPV");
registry.get<TH1>(HIST("hEventCountSpecific"))->GetXaxis()->SetBinLabel(6, "kNoCollInTimeRangeStandard");
registry.get<TH1>(HIST("hEventCountSpecific"))->GetXaxis()->SetBinLabel(7, "kIsGoodITSLayersAll");
std::string itsLayersFlag[kCount_ITSLayersFlag] = {"ITSLayersAll", "ITSLayers0123", "ITSLayer3"};
registry.get<TH1>(HIST("hEventCountSpecific"))->GetXaxis()->SetBinLabel(7, Form("kIsGood%s", itsLayersFlag[cfgEvSelkIsGoodITSLayersFlag].c_str()));
registry.get<TH1>(HIST("hEventCountSpecific"))->GetXaxis()->SetBinLabel(8, "kNoCollInRofStandard");
registry.get<TH1>(HIST("hEventCountSpecific"))->GetXaxis()->SetBinLabel(9, "kNoHighMultCollInPrevRof");
registry.get<TH1>(HIST("hEventCountSpecific"))->GetXaxis()->SetBinLabel(10, "occupancy");
Expand Down Expand Up @@ -396,8 +404,8 @@ struct FlowTask {
registry.add("hnTPCClu", "Number of found TPC clusters", {HistType::kTH1D, {{100, 40, 180}}});
registry.add("hnITSClu", "Number of found ITS clusters", {HistType::kTH1D, {{100, 0, 20}}});
registry.add("hnTPCCrossedRow", "Number of crossed TPC Rows", {HistType::kTH1D, {{100, 40, 180}}});
registry.add("hDCAz", "DCAz after cuts; DCAz (cm); Pt", {HistType::kTH2D, {{200, -0.5, 0.5}, {200, 0, 5}}});
registry.add("hDCAxy", "DCAxy after cuts; DCAxy (cm); Pt", {HistType::kTH2D, {{200, -0.5, 0.5}, {200, 0, 5}}});
registry.add("hDCAz", "DCAz after cuts; DCAz (cm); Pt", {HistType::kTH2D, {{200, -1., 1.}, {200, 0, 5}}});
registry.add("hDCAxy", "DCAxy after cuts; DCAxy (cm); Pt", {HistType::kTH2D, {{200, -1., 1.}, {200, 0, 5}}});
registry.add("hTrackCorrection2d", "Correlation table for number of tracks table; uncorrected track; corrected track", {HistType::kTH2D, {axisNch, axisNch}});
registry.add("hMeanPt", "", {HistType::kTProfile, {axisIndependent}});
registry.add("hMeanPtWithinGap08", "", {HistType::kTProfile, {axisIndependent}});
Expand Down Expand Up @@ -979,12 +987,17 @@ struct FlowTask {
}
if (cfgEvSelkNoCollInTimeRangeStandard)
registry.fill(HIST("hEventCountSpecific"), 5.5);
if (cfgEvSelkIsGoodITSLayersAll && !collision.selection_bit(o2::aod::evsel::kIsGoodITSLayersAll)) {
if (cfgEvSelkIsGoodITSLayers) {
// from Jan 9 2025 AOT meeting
// cut time intervals with dead ITS staves
return 0;
if (cfgEvSelkIsGoodITSLayersFlag == kITSLayersAll && !collision.selection_bit(o2::aod::evsel::kIsGoodITSLayersAll))
return 0;
if (cfgEvSelkIsGoodITSLayersFlag == kITSLayer0123 && !collision.selection_bit(o2::aod::evsel::kIsGoodITSLayer0123))
return 0;
if (cfgEvSelkIsGoodITSLayersFlag == kITSLayer3 && !collision.selection_bit(o2::aod::evsel::kIsGoodITSLayer3))
return 0;
}
if (cfgEvSelkIsGoodITSLayersAll)
if (cfgEvSelkIsGoodITSLayers)
registry.fill(HIST("hEventCountSpecific"), 6.5);
if (cfgEvSelkNoCollInRofStandard && !collision.selection_bit(o2::aod::evsel::kNoCollInRofStandard)) {
// no other collisions in this Readout Frame with per-collision multiplicity above threshold
Expand Down Expand Up @@ -1406,7 +1419,7 @@ struct FlowTask {
}
registry.fill(HIST("hNormDeltaPt_X_afterCut"), normDeltaPt, independent, weffEvent);
if (ptEtaVec.size() > 0) {
for (auto trptEta : ptEtaVec) {
for (auto const& trptEta : ptEtaVec) {
registry.fill(HIST("hPt_afterDptCut"), trptEta.first);
if (trptEta.second < -1. * cfgAdditionObs.cfgDptDisEtaGapQA)
registry.fill(HIST("hPtA_afterDptCut"), trptEta.first);
Expand Down
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