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[PWGCF] Skip the cent cut and add some QA plots #15894

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kegang02 wants to merge 3 commits into from
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[PWGCF] Skip the cent cut and add some QA plots #15894

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d1c59a2
Skip the cent cut and add some QA plots
Apr 21, 2026
c286174
Please consider the following formatting changes
alibuild Apr 21, 2026
df77187
Merge pull request #6 from alibuild/alibot-cleanup-15894
kegang02 Apr 21, 2026
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81 changes: 41 additions & 40 deletions PWGCF/Flow/Tasks/flowZdcEnergy.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.

Check failure on line 1 in PWGCF/Flow/Tasks/flowZdcEnergy.cxx

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[name/workflow-file] 

Name of a workflow file must match the name of the main struct in it (without the PWG prefix). (Class implementation files should be in "Core" directories.)
// See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
// All rights not expressly granted are reserved.
//
Expand All @@ -12,7 +12,7 @@
/// \file flowZdcEnergy.cxx
/// \author Kegang Xiong
/// \since 03/2026
/// \brief Study ZDC energy observables versus centrality for Run 2 / Run 3.
/// \brief Study ZDC energy observables versus multiplicity for Run 2 / Run 3.

#include "Common/DataModel/Centrality.h"
#include "Common/DataModel/EventSelection.h"
Expand Down Expand Up @@ -47,10 +47,7 @@
struct flowZdcEnergy {

struct : ConfigurableGroup{
O2_DEFINE_CONFIGURABLE(cfgUseEvsel, bool, true, "whether to enable event selection")
O2_DEFINE_CONFIGURABLE(cfgCentMin, float, 0.f, "Minimum centrality for selected events")
O2_DEFINE_CONFIGURABLE(cfgCentMax, float, 90.f, "Maximum centrality for selected events")
O2_DEFINE_CONFIGURABLE(cfgVtxZ, float, 10.f, "Accepted z-vertex range")} evsel;
O2_DEFINE_CONFIGURABLE(cfgVtxZ, float, 10.f, "Accepted z-vertex range")} evsel;

O2_DEFINE_CONFIGURABLE(cfgEtaMax, float, 0.8f, "Maximum track #eta")
O2_DEFINE_CONFIGURABLE(cfgPtMin, float, 0.2f, "Minimum track #P_{t}")
Expand All @@ -59,8 +56,8 @@
O2_DEFINE_CONFIGURABLE(cfgDcaZMax, float, 2.0f, "Maximum DCAz")

ConfigurableAxis axisCent{"axisCent", {90, 0, 90}, "Centrality (%)"};
ConfigurableAxis axisMult{"axisMult", {100, 0, 100000}, "Multiplicity"};
ConfigurableAxis axisMultDivided{"axisMultDivided", {30, 0, 15000}, "Multiplicity bins for ZN energy"};
ConfigurableAxis axisMult{"axisMult", {500, 0, 15000}, "Multiplicity"};
ConfigurableAxis axisMultDivided{"axisMultDivided", {500, 0, 10000}, "Multiplicity bins for ZN energy"};
ConfigurableAxis axisPt{"axisPt", {100, 0, 15}, "#P_{t}"};
ConfigurableAxis axisEta{"axisEta", {64, -1.6, 1.6}, "#eta"};
ConfigurableAxis axisEnergy{"axisEnergy", {300, 0, 300}, "Energy"};
Expand All @@ -71,7 +68,6 @@
kAllEvents = 0,
kSeln,
kZvtx,
kCentrality,
kBCHasZDC,
kSelectedZDC,
kNSelections
Expand Down Expand Up @@ -105,13 +101,17 @@
hCount->GetXaxis()->SetBinLabel(kAllEvents + 1, "All events");
hCount->GetXaxis()->SetBinLabel(kSeln + 1, "Sel7/8");
hCount->GetXaxis()->SetBinLabel(kZvtx + 1, "Zvtx");
hCount->GetXaxis()->SetBinLabel(kCentrality + 1, "Centrality");
hCount->GetXaxis()->SetBinLabel(kBCHasZDC + 1, "BC has ZDC");
hCount->GetXaxis()->SetBinLabel(kSelectedZDC + 1, "Selected ZDC");

registry.add("QA/hCentrality", "", {HistType::kTH1D, {axisCent}});
registry.add("QA/hMultiplicity", "", {HistType::kTH1D, {axisMult}});
registry.add("QA/hMultiplicity_TPC", "", {HistType::kTH1D, {axisMult}});
registry.add("QA/hCentrality_beforeCut", "", {HistType::kTH1D, {axisCent}});
registry.add("QA/hMultiplicity_beforeCut", "", {HistType::kTH1D, {axisMult}});
registry.add("QA/hMultiplicity_TPC_beforeCut", "", {HistType::kTH1D, {axisMult}});

registry.add("QA/hCentrality_afterCut", "", {HistType::kTH1D, {axisCent}});
registry.add("QA/hMultiplicity_afterCut", "", {HistType::kTH1D, {axisMult}});
registry.add("QA/hMultiplicity_TPC_afterCut", "", {HistType::kTH1D, {axisMult}});

registry.add("QA/hPt", "", {HistType::kTH1D, {axisPt}});
registry.add("QA/hEta", "", {HistType::kTH1D, {axisEta}});

Expand Down Expand Up @@ -148,28 +148,21 @@

// Helper: event selection
template <typename TCollision>
bool acceptEvent(TCollision const& collision, bool UseEvsel, float centrality, const int runmode)
bool acceptEvent(TCollision const& collision, const int runmode)
{
if (!UseEvsel) {
registry.fill(HIST("QA/hEventCount"), kAllEvents);
} else {
registry.fill(HIST("QA/hEventCount"), kAllEvents);
if (runmode == 2 && !collision.sel7()) {
return false;
}
if (runmode == 3 && !collision.sel8()) {
return false;
}
registry.fill(HIST("QA/hEventCount"), kSeln);
if (std::abs(collision.posZ()) > evsel.cfgVtxZ) {
return false;
}
registry.fill(HIST("QA/hEventCount"), kZvtx);
if (centrality < evsel.cfgCentMin || centrality > evsel.cfgCentMax) {
return false;
}
registry.fill(HIST("QA/hEventCount"), kCentrality);
registry.fill(HIST("QA/hEventCount"), kAllEvents);
if (runmode == 2 && !collision.sel7()) {

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[magic-number] 

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return false;
}
if (runmode == 3 && !collision.sel8()) {

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
return false;
}
registry.fill(HIST("QA/hEventCount"), kSeln);
if (std::abs(collision.posZ()) > evsel.cfgVtxZ) {
return false;
}
registry.fill(HIST("QA/hEventCount"), kZvtx);

return true;
}

Expand Down Expand Up @@ -232,11 +225,11 @@
registry.fill(HIST("hEnergyWithMult_ZNA_SumSectors"), sumEnergyZNA, multiTPC);
registry.fill(HIST("hEnergyWithMult_ZNC_SumSectors"), sumEnergyZNC, multiTPC);

if (commonDen > 1.e-6f) {

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
registry.fill(HIST("hEnergyWithCent_RescaledDiff"), (energyCommonZNA - energyCommonZNC) / commonDen, centrality);
registry.fill(HIST("hEnergyWithMult_RescaledDiff"), (energyCommonZNA - energyCommonZNC) / commonDen, multiTPC);
}
if (sumDen > 1.e-6f) {

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[magic-number] 

Avoid magic numbers in expressions. Assign the value to a clearly named variable or constant.
registry.fill(HIST("hEnergyWithCent_RescaledSumDiff"), (sumEnergyZNA - sumEnergyZNC) / sumDen, centrality);
registry.fill(HIST("hEnergyWithMult_RescaledSumDiff"), (sumEnergyZNA - sumEnergyZNC) / sumDen, multiTPC);
}
Expand All @@ -252,12 +245,16 @@
const float multi = collision.multFT0C();
const float multiTPC = collision.multTPC();

if (!acceptEvent(collision, evsel.cfgUseEvsel, centrality, 3)) {
registry.fill(HIST("QA/hCentrality_beforeCut"), centrality);
registry.fill(HIST("QA/hMultiplicity_beforeCut"), multi);
registry.fill(HIST("QA/hMultiplicity_TPC_beforeCut"), multiTPC);

if (!acceptEvent(collision, 3)) {
return;
}
registry.fill(HIST("QA/hCentrality"), centrality);
registry.fill(HIST("QA/hMultiplicity"), multi);
registry.fill(HIST("QA/hMultiplicity_TPC"), multiTPC);
registry.fill(HIST("QA/hCentrality_afterCut"), centrality);
registry.fill(HIST("QA/hMultiplicity_afterCut"), multi);
registry.fill(HIST("QA/hMultiplicity_TPC_afterCut"), multiTPC);
fillZDCObservables<CollisionsRun3::iterator, BCsRun3>(collision, centrality, multiTPC);

for (const auto& track : tracks) {
Expand All @@ -276,12 +273,16 @@
const float multi = collision.multFV0M();
const float multiTPC = collision.multTPC();

if (!acceptEvent(collision, evsel.cfgUseEvsel, centrality, 2)) {
registry.fill(HIST("QA/hCentrality_beforeCut"), centrality);
registry.fill(HIST("QA/hMultiplicity_beforeCut"), multi);
registry.fill(HIST("QA/hMultiplicity_TPC_beforeCut"), multiTPC);

if (!acceptEvent(collision, 2)) {
return;
}
registry.fill(HIST("QA/hCentrality"), centrality);
registry.fill(HIST("QA/hMultiplicity"), multi);
registry.fill(HIST("QA/hMultiplicity_TPC"), multiTPC);
registry.fill(HIST("QA/hCentrality_afterCut"), centrality);
registry.fill(HIST("QA/hMultiplicity_afterCut"), multi);
registry.fill(HIST("QA/hMultiplicity_TPC_afterCut"), multiTPC);
fillZDCObservables<CollisionsRun2::iterator, BCsRun2>(collision, centrality, multiTPC);

for (const auto& track : tracks) {
Expand Down
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