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[PWGCF] FlowSP : Always make centrality histo #14649

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Merged
victor-gonzalez merged 2 commits into from
Jan 27, 2026
+23 −18
Merged

[PWGCF] FlowSP : Always make centrality histo #14649

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467d730
Always make centrality histo
cnkoster Jan 27, 2026
778e265
Fix O2-linter warnings
cnkoster Jan 27, 2026
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41 changes: 23 additions & 18 deletions PWGCF/Flow/Tasks/flowSP.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -347,6 +347,8 @@ struct FlowSP {

rctChecker.init(rctFlags.cfgEvtRCTFlagCheckerLabel, rctFlags.cfgEvtRCTFlagCheckerZDCCheck, rctFlags.cfgEvtRCTFlagCheckerLimitAcceptAsBad);

histos.add("hCentrality", "Centrality; Centrality (%); ", {HistType::kTH1D, {axisCent}});

histos.add("hEventCount", "Number of Event; Cut; #Events Passed Cut", {HistType::kTH1D, {{nEventSelections, 0, nEventSelections}}});
histos.get<TH1>(HIST("hEventCount"))->GetXaxis()->SetBinLabel(evSel_FilteredEvent + 1, "Filtered events");
histos.get<TH1>(HIST("hEventCount"))->GetXaxis()->SetBinLabel(evSel_RCTFlagsZDC + 1, "RCT Flags ZDC");
Expand Down Expand Up @@ -1220,6 +1222,9 @@ struct FlowSP {
return;
histos.fill(HIST("hEventCount"), evSel_isSelectedZDC);

// Always fill centrality histogram after event selections!
histos.fill(HIST("hCentrality"), spm.centrality);

spm.qxA = collision.qxA();
spm.qyA = collision.qyA();
spm.qxC = collision.qxC();
Expand Down Expand Up @@ -1369,16 +1374,16 @@ struct FlowSP {
histos.fill(HIST("hTrackCount"), trackSel_ParticleWeights);

double weight = spm.wacc[0][0] * spm.weff[0][0] * spm.centWeight;
double weight_charged = spm.wacc[spm.charge][0] * spm.weff[spm.charge][0] * spm.centWeight;
double weightCharged = spm.wacc[spm.charge][0] * spm.weff[spm.charge][0] * spm.centWeight;

hRelEtaPt->Fill(track.eta(), kInclusive, track.pt(), weight);
hRelEtaPt->Fill(track.eta(), spm.charge, track.pt(), weight_charged);
hRelEtaPt->Fill(track.eta(), spm.charge, track.pt(), weightCharged);

ptV1A->Fill(track.eta(), kInclusive, track.pt() * ((spm.uy * spm.qyA + spm.ux * spm.qxA) / std::sqrt(std::fabs(spm.corrQQ))), weight);
ptV1A->Fill(track.eta(), spm.charge, track.pt() * ((spm.uy * spm.qyA + spm.ux * spm.qxA) / std::sqrt(std::fabs(spm.corrQQ))), weight_charged);
ptV1A->Fill(track.eta(), spm.charge, track.pt() * ((spm.uy * spm.qyA + spm.ux * spm.qxA) / std::sqrt(std::fabs(spm.corrQQ))), weightCharged);

ptV1C->Fill(track.eta(), kInclusive, track.pt() * ((spm.uy * spm.qyC + spm.ux * spm.qxC) / std::sqrt(std::fabs(spm.corrQQ))), weight);
ptV1C->Fill(track.eta(), spm.charge, track.pt() * ((spm.uy * spm.qyC + spm.ux * spm.qxC) / std::sqrt(std::fabs(spm.corrQQ))), weight_charged);
ptV1C->Fill(track.eta(), spm.charge, track.pt() * ((spm.uy * spm.qyC + spm.ux * spm.qxC) / std::sqrt(std::fabs(spm.corrQQ))), weightCharged);

fillAllQA<kAfter, kUnidentified>(track);
if (cfgFillPIDQA) {
Expand Down Expand Up @@ -1495,22 +1500,22 @@ struct FlowSP {
registry.fill(HIST("incl/meanPT/meanRelPtC"), eta, spm.centrality, dptV1C / drelPt, 1);

bin = hRelEtaPt->FindBin(eta, kPositive);
double drelPt_pos = hRelEtaPt->GetBinContent(bin);
double dptV1A_pos = ptV1A->GetBinContent(bin);
double dptV1C_pos = ptV1C->GetBinContent(bin);
if (drelPt_pos)
registry.fill(HIST("pos/meanPT/meanRelPtA"), eta, spm.centrality, dptV1A_pos / drelPt_pos, 1);
if (drelPt_pos)
registry.fill(HIST("pos/meanPT/meanRelPtC"), eta, spm.centrality, dptV1C_pos / drelPt_pos, 1);
double drelPtPos = hRelEtaPt->GetBinContent(bin);
double dptV1APos = ptV1A->GetBinContent(bin);
double dptV1CPos = ptV1C->GetBinContent(bin);
if (drelPtPos)
registry.fill(HIST("pos/meanPT/meanRelPtA"), eta, spm.centrality, dptV1APos / drelPtPos, 1);
if (drelPtPos)
registry.fill(HIST("pos/meanPT/meanRelPtC"), eta, spm.centrality, dptV1CPos / drelPtPos, 1);

bin = hRelEtaPt->FindBin(eta, kNegative);
double drelPt_neg = hRelEtaPt->GetBinContent(bin);
double dptV1A_neg = ptV1A->GetBinContent(bin);
double dptV1C_neg = ptV1C->GetBinContent(bin);
if (drelPt_neg)
registry.fill(HIST("neg/meanPT/meanRelPtA"), eta, spm.centrality, dptV1A_neg / drelPt_neg, 1);
if (drelPt_neg)
registry.fill(HIST("neg/meanPT/meanRelPtC"), eta, spm.centrality, dptV1C_neg / drelPt_neg, 1);
double drelPtNeg = hRelEtaPt->GetBinContent(bin);
double dptV1ANeg = ptV1A->GetBinContent(bin);
double dptV1CNeg = ptV1C->GetBinContent(bin);
if (drelPtNeg)
registry.fill(HIST("neg/meanPT/meanRelPtA"), eta, spm.centrality, dptV1ANeg / drelPtNeg, 1);
if (drelPtNeg)
registry.fill(HIST("neg/meanPT/meanRelPtC"), eta, spm.centrality, dptV1CNeg / drelPtNeg, 1);
}
}

Expand Down
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