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[Common] Add one more QA plot #10680

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[Common] Add one more QA plot #10680

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[Common] Add one more QA plot
ddobrigk Mar 27, 2025
4c3c9e7
Update centralityStudy.cxx
ddobrigk Mar 28, 2025
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4 changes: 3 additions & 1 deletion Common/Tasks/centralityStudy.cxx
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Original file line number Diff line number Diff line change
@@ -1,3 +1,3 @@
// Copyright 2019-2020 CERN and copyright holders of ALICE O2.
// See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
// All rights not expressly granted are reserved.
Expand All @@ -8,7 +8,7 @@
// In applying this license CERN does not waive the privileges and immunities
// granted to it by virtue of its status as an Intergovernmental Organization
// or submit itself to any jurisdiction.
//

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// This task does dedicated centrality studies for understanding the
// Run 3 Pb-Pb centrality selections in 2023 data. It is compatible with
// derived data.
Expand All @@ -29,7 +29,7 @@

using BCsWithRun3Matchings = soa::Join<aod::BCs, aod::Timestamps, aod::Run3MatchedToBCSparse>;

struct centralityStudy {

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[name/struct] 

Use UpperCamelCase for names of structs.
// Raw multiplicities
HistogramRegistry histos{"Histos", {}, OutputObjHandlingPolicy::AnalysisObject};

Expand Down Expand Up @@ -203,12 +203,13 @@
}

if (doprocessCollisionsWithCentrality) {
// in case requested: do vs centrality debugging
// in case requested: do vs centrality debugging of key quantities
histos.add("hCentrality", "hCentrality", kTH1F, {axisCentrality});
histos.add("hNContribsVsCentrality", "hNContribsVsCentrality", kTH2F, {axisCentrality, axisMultPVContributors});
histos.add("hNITSTPCTracksVsCentrality", "hNITSTPCTracksVsCentrality", kTH2F, {axisCentrality, axisMultPVContributors});
histos.add("hNITSOnlyTracksVsCentrality", "hNITSOnlyTracksVsCentrality", kTH2F, {axisCentrality, axisMultPVContributors});
histos.add("hNGlobalTracksVsCentrality", "hNGlobalTracksVsCentrality", kTH2F, {axisCentrality, axisMultPVContributors});
histos.add("hNGlobalTracksEtaHalfVsCentrality", "hNGlobalTracksEtaHalfVsCentrality", kTH2F, {axisCentrality, axisMultPVContributors});
histos.add("hNMFTTracksVsCentrality", "hNMFTTracksVsCentrality", kTH2F, {axisCentrality, axisMultMFTTracks});
histos.add("hPVChi2VsCentrality", "hPVChi2VsCentrality", kTH2F, {axisCentrality, axisPVChi2});
histos.add("hDeltaTimeVsCentrality", "hDeltaTimeVsCentrality", kTH2F, {axisCentrality, axisDeltaTime});
Expand Down Expand Up @@ -238,7 +239,7 @@
if (applySel8 && !collision.multSel8())
return;
histos.fill(HIST("hCollisionSelection"), 1);
if (applyVtxZ && TMath::Abs(collision.multPVz()) > 10)

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return;
histos.fill(HIST("hCollisionSelection"), 2);

Expand Down Expand Up @@ -281,7 +282,7 @@

// do this only if information is available
if constexpr (requires { collision.timeToNext(); }) {
float timeToNeighbour = TMath::Min(

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std::abs(collision.timeToNext()),
std::abs(collision.timeToPrevious()));
histos.fill(HIST("hDeltaTimeVsCentrality"), collision.centFT0C(), timeToNeighbour);
Expand Down Expand Up @@ -386,6 +387,7 @@
histos.fill(HIST("hNITSTPCTracksVsCentrality"), collision.centFT0C(), collision.multNTracksITSTPC());
histos.fill(HIST("hNITSOnlyTracksVsCentrality"), collision.centFT0C(), collision.multNTracksITSOnly());
histos.fill(HIST("hNGlobalTracksVsCentrality"), collision.centFT0C(), collision.multNTracksGlobal());
histos.fill(HIST("hNGlobalTracksEtaHalfVsCentrality"), collision.centFT0C(), collision.multNGlobalTracksPVetaHalf());
histos.fill(HIST("hNMFTTracksVsCentrality"), collision.centFT0C(), collision.mftNtracks());
histos.fill(HIST("hPVChi2VsCentrality"), collision.centFT0C(), collision.multPVChi2());

Expand Down Expand Up @@ -437,7 +439,7 @@
if (vertexZwithT0 < 100.0f) {
if (!multbc.multFT0PosZValid())
return;
if (TMath::Abs(multbc.multFT0PosZ()) > vertexZwithT0)

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return;
}
histos.fill(HIST("hBCSelection"), 4); // FV0OrA
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