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ddobrigk merged 2 commits into from
Aug 5, 2025
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[Common] Latest changes to centrality study task #12434

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[Common] Latest changes to centrality study task
ddobrigk Aug 5, 2025
56bac12
Please consider the following formatting changes (#461)
alibuild Aug 5, 2025
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55 changes: 35 additions & 20 deletions Common/Tasks/centralityStudy.cxx
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
// Copyright 2019-2020 CERN and copyright holders of ALICE O2.

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[doc/file] 

Provide mandatory file documentation.
// 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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[doc/file] 

Documentation for \author is missing, incorrect or misplaced.

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[doc/file] 

Documentation for \brief is missing, incorrect or misplaced.

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[doc/file] 

Documentation for \file is missing, incorrect or misplaced.
// 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 Down Expand Up @@ -37,7 +37,7 @@
using namespace o2::framework;

using BCsWithRun3Matchings = soa::Join<aod::BCs, aod::Timestamps, aod::Run3MatchedToBCSparse>;
#define getHist(type, name) std::get<std::shared_ptr<type>>(histPointers[name])

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[name/macro] 

Use SCREAMING_SNAKE_CASE for names of macros. Leading and double underscores are not allowed.

struct centralityStudy {
// Raw multiplicities
Expand Down Expand Up @@ -210,9 +210,9 @@
histos.add("hFV0A_BCs", "hFV0A_BCs", kTH1D, {axisMultUltraFineFV0A});
histos.add("hFT0CvsPVz_BCs_All", "hFT0CvsPVz_BCs_All", kTProfile, {axisPVz});
histos.add("hFT0CvsPVz_BCs", "hFT0CvsPVz_BCs", kTProfile, {axisPVz});
histos.add("hVertexZ_BCvsCO", "hVertexZ_BCvsCO", kTH2D, {axisPVz, axisPVz});
histos.add("hZNAvsFT0C_BCs", "hZNAvsFT0C_BCs", kTH2D, {axisMultFT0C, axisZN});
histos.add("hZNCvsFT0C_BCs", "hZNCvsFT0C_BCs", kTH2D, {axisMultFT0C, axisZN});
histos.add("hVertexZ_BCvsCO", "hVertexZ_BCvsCO", kTH2F, {axisPVz, axisPVz});
histos.add("hZNAvsFT0C_BCs", "hZNAvsFT0C_BCs", kTH2F, {axisMultFT0C, axisZN});
histos.add("hZNCvsFT0C_BCs", "hZNCvsFT0C_BCs", kTH2F, {axisMultFT0C, axisZN});
}

if (do2DPlots) {
Expand All @@ -237,6 +237,7 @@
histos.add("hNGlobalTracksVsZNA", "hNGlobalTracksVsZNA", kTH2F, {axisZN, axisMultGlobalTracks});
histos.add("hNGlobalTracksVsZNC", "hNGlobalTracksVsZNC", kTH2F, {axisZN, axisMultGlobalTracks});
histos.add("hNGlobalTracksVsNMFTTracks", "hNGlobalTracksVsNMFTTracks", kTH2F, {axisMultMFTTracks, axisMultGlobalTracks});
histos.add("hNGlobalTracksVsNTPV", "hNGlobalTracksVsNTPV", kTH2F, {axisMultPVContributors, axisMultGlobalTracks});
}

if (doOccupancyStudyVsRawValues2d) {
Expand Down Expand Up @@ -391,15 +392,24 @@
histPointers.insert({histPath + "hDeltaTimeVsCentrality", histos.add((histPath + "hDeltaTimeVsCentrality").c_str(), "hDeltaTimeVsCentrality", {kTH2F, {{axisCentrality, axisDeltaTime}}})});
}

if (doNGlobalTracksVsRawSignals) {
histPointers.insert({histPath + "hNGlobalTracksVsFT0A", histos.add((histPath + "hNGlobalTracksVsFT0A").c_str(), "hNGlobalTracksVsFT0A", {kTH2F, {{axisMultFT0A, axisMultGlobalTracks}}})});
histPointers.insert({histPath + "hNGlobalTracksVsFT0C", histos.add((histPath + "hNGlobalTracksVsFT0C").c_str(), "hNGlobalTracksVsFT0C", {kTH2F, {{axisMultFT0C, axisMultGlobalTracks}}})});
histPointers.insert({histPath + "hNGlobalTracksVsFT0M", histos.add((histPath + "hNGlobalTracksVsFT0M").c_str(), "hNGlobalTracksVsFT0M", {kTH2F, {{axisMultFT0M, axisMultGlobalTracks}}})});
histPointers.insert({histPath + "hNGlobalTracksVsFV0A", histos.add((histPath + "hNGlobalTracksVsFV0A").c_str(), "hNGlobalTracksVsFV0A", {kTH2F, {{axisMultFV0A, axisMultGlobalTracks}}})});
histPointers.insert({histPath + "hNGlobalTracksVsNMFTTracks", histos.add((histPath + "hNGlobalTracksVsNMFTTracks").c_str(), "hNGlobalTracksVsNMFTTracks", {kTH2F, {{axisMultMFTTracks, axisMultGlobalTracks}}})});
histPointers.insert({histPath + "hNGlobalTracksVsNTPV", histos.add((histPath + "hNGlobalTracksVsNTPV").c_str(), "hNGlobalTracksVsNTPV", {kTH2F, {{axisMultPVContributors, axisMultGlobalTracks}}})});
}

if (doTimeStudies) {
histPointers.insert({histPath + "hFT0AVsTime", histos.add((histPath + "hFT0AVsTime").c_str(), "hFT0AVsTime", {kTH2D, {{axisDeltaTimestamp, axisMultFT0A}}})});
histPointers.insert({histPath + "hFT0CVsTime", histos.add((histPath + "hFT0CVsTime").c_str(), "hFT0CVsTime", {kTH2D, {{axisDeltaTimestamp, axisMultFT0C}}})});
histPointers.insert({histPath + "hFT0MVsTime", histos.add((histPath + "hFT0MVsTime").c_str(), "hFT0MVsTime", {kTH2D, {{axisDeltaTimestamp, axisMultFT0M}}})});
histPointers.insert({histPath + "hFV0AVsTime", histos.add((histPath + "hFV0AVsTime").c_str(), "hFV0AVsTime", {kTH2D, {{axisDeltaTimestamp, axisMultFV0A}}})});
histPointers.insert({histPath + "hFV0AOuterVsTime", histos.add((histPath + "hFV0AOuterVsTime").c_str(), "hFV0AOuterVsTime", {kTH2D, {{axisDeltaTimestamp, axisMultFV0A}}})});
histPointers.insert({histPath + "hMFTTracksVsTime", histos.add((histPath + "hMFTTracksVsTime").c_str(), "hMFTTracksVsTime", {kTH2D, {{axisDeltaTimestamp, axisMultMFTTracks}}})});
histPointers.insert({histPath + "hNGlobalVsTime", histos.add((histPath + "hNGlobalVsTime").c_str(), "hNGlobalVsTime", {kTH2D, {{axisDeltaTimestamp, axisMultGlobalTracks}}})});
histPointers.insert({histPath + "hNTPVContributorsVsTime", histos.add((histPath + "hNTPVContributorsVsTime").c_str(), "hNTPVContributorsVsTime", {kTH2D, {{axisDeltaTimestamp, axisMultPVContributors}}})});
histPointers.insert({histPath + "hFT0AVsTime", histos.add((histPath + "hFT0AVsTime").c_str(), "hFT0AVsTime", {kTH2F, {{axisDeltaTimestamp, axisMultFT0A}}})});
histPointers.insert({histPath + "hFT0CVsTime", histos.add((histPath + "hFT0CVsTime").c_str(), "hFT0CVsTime", {kTH2F, {{axisDeltaTimestamp, axisMultFT0C}}})});
histPointers.insert({histPath + "hFT0MVsTime", histos.add((histPath + "hFT0MVsTime").c_str(), "hFT0MVsTime", {kTH2F, {{axisDeltaTimestamp, axisMultFT0M}}})});
histPointers.insert({histPath + "hFV0AVsTime", histos.add((histPath + "hFV0AVsTime").c_str(), "hFV0AVsTime", {kTH2F, {{axisDeltaTimestamp, axisMultFV0A}}})});
histPointers.insert({histPath + "hFV0AOuterVsTime", histos.add((histPath + "hFV0AOuterVsTime").c_str(), "hFV0AOuterVsTime", {kTH2F, {{axisDeltaTimestamp, axisMultFV0A}}})});
histPointers.insert({histPath + "hMFTTracksVsTime", histos.add((histPath + "hMFTTracksVsTime").c_str(), "hMFTTracksVsTime", {kTH2F, {{axisDeltaTimestamp, axisMultMFTTracks}}})});
histPointers.insert({histPath + "hNGlobalVsTime", histos.add((histPath + "hNGlobalVsTime").c_str(), "hNGlobalVsTime", {kTH2F, {{axisDeltaTimestamp, axisMultGlobalTracks}}})});
histPointers.insert({histPath + "hNTPVContributorsVsTime", histos.add((histPath + "hNTPVContributorsVsTime").c_str(), "hNTPVContributorsVsTime", {kTH2F, {{axisDeltaTimestamp, axisMultPVContributors}}})});
histPointers.insert({histPath + "hPVzProfileCoVsTime", histos.add((histPath + "hPVzProfileCoVsTime").c_str(), "hPVzProfileCoVsTime", {kTProfile, {{axisDeltaTimestamp}}})});
histPointers.insert({histPath + "hPVzProfileBcVsTime", histos.add((histPath + "hPVzProfileBcVsTime").c_str(), "hPVzProfileBcVsTime", {kTProfile, {{axisDeltaTimestamp}}})});
if (irDoRateVsTime) {
Expand Down Expand Up @@ -484,7 +494,7 @@

// _______________________________________________________

if (applyVtxZ && TMath::Abs(collision.multPVz()) > 10)

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.

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[root/entity] 

Replace ROOT entities with equivalents from standard C++ or from O2.
return;
histos.fill(HIST("hCollisionSelection"), 2);
getHist(TH1, histPath + "hCollisionSelection")->Fill(2);
Expand Down Expand Up @@ -535,7 +545,7 @@

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

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[root/entity] 

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std::abs(collision.timeToNext()),
std::abs(collision.timeToPrevious()));
histos.fill(HIST("hDeltaTimeVsCentrality"), collision.centFT0C(), timeToNeighbour);
Expand Down Expand Up @@ -650,15 +660,20 @@
}

if (doNGlobalTracksVsRawSignals) {
histos.fill(HIST("hNGlobalTracksVsFT0A"), collision.multFT0A(), collision.multNTracksGlobal());
histos.fill(HIST("hNGlobalTracksVsFT0C"), collision.multFT0C(), collision.multNTracksGlobal());
histos.fill(HIST("hNGlobalTracksVsFT0M"), collision.multFT0A() + collision.multFT0C(), collision.multNTracksGlobal());
histos.fill(HIST("hNGlobalTracksVsFV0A"), collision.multFV0A(), collision.multNTracksGlobal());
histos.fill(HIST("hNGlobalTracksVsFDDA"), collision.multFDDA(), collision.multNTracksGlobal());
histos.fill(HIST("hNGlobalTracksVsFDDC"), collision.multFDDC(), collision.multNTracksGlobal());
histos.fill(HIST("hNGlobalTracksVsZNA"), collision.multZNA(), collision.multNTracksGlobal());
histos.fill(HIST("hNGlobalTracksVsZNC"), collision.multZNC(), collision.multNTracksGlobal());
histos.fill(HIST("hNGlobalTracksVsNMFTTracks"), collision.mftNtracks(), collision.multNTracksGlobal());
histos.fill(HIST("hNGlobalTracksVsFT0A"), multFT0A, multNTracksGlobal);
histos.fill(HIST("hNGlobalTracksVsFT0C"), multFT0C, multNTracksGlobal);
histos.fill(HIST("hNGlobalTracksVsFT0M"), (multFT0A + multFT0C), multNTracksGlobal);
histos.fill(HIST("hNGlobalTracksVsFV0A"), multFV0A, multNTracksGlobal);
histos.fill(HIST("hNGlobalTracksVsNMFTTracks"), mftNtracks, multNTracksGlobal);
histos.fill(HIST("hNGlobalTracksVsNTPV"), multNTracksPV, multNTracksGlobal);

// per run
getHist(TH2, histPath + "hNGlobalTracksVsFT0A")->Fill(multFT0A, multNTracksGlobal);
getHist(TH2, histPath + "hNGlobalTracksVsFT0C")->Fill(multFT0C, multNTracksGlobal);
getHist(TH2, histPath + "hNGlobalTracksVsFT0M")->Fill(multFT0A + multFT0C, multNTracksGlobal);
getHist(TH2, histPath + "hNGlobalTracksVsFV0A")->Fill(multFV0A, multNTracksGlobal);
getHist(TH2, histPath + "hNGlobalTracksVsNMFTTracks")->Fill(mftNtracks, multNTracksGlobal);
getHist(TH2, histPath + "hNGlobalTracksVsNTPV")->Fill(multNTracksPV, multNTracksGlobal);
}

// if the table has centrality information
Expand Down Expand Up @@ -750,10 +765,10 @@
if (selectFV0OrA && !multbc.multFV0OrA())
return;
histos.fill(HIST("hBCSelection"), 3); // FV0OrA
if (vertexZwithT0 < 100.0f) {

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if (!multbc.multFT0PosZValid())
return;
if (TMath::Abs(multbc.multFT0PosZ()) > vertexZwithT0)

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[root/entity] 

Replace ROOT entities with equivalents from standard C++ or from O2.
return;
}
histos.fill(HIST("hBCSelection"), 4); // FV0OrA
Expand Down
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