From 2006cb563be57914886067972c68b1c34070ca0e Mon Sep 17 00:00:00 2001
From: Jaideep Tanwar <141036812+jtanwar2212@users.noreply.github.com>
Date: Thu, 5 Nov 2026 12:28:51 +0530
Subject: [PATCH] Add centrality events histogram

---
 PWGLF/TableProducer/Nuspex/nucleiSpectra.cxx | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/PWGLF/TableProducer/Nuspex/nucleiSpectra.cxx b/PWGLF/TableProducer/Nuspex/nucleiSpectra.cxx
index 17dcdd62ec5..cb421240800 100644
--- a/PWGLF/TableProducer/Nuspex/nucleiSpectra.cxx
+++ b/PWGLF/TableProducer/Nuspex/nucleiSpectra.cxx
@@ -558,6 +558,7 @@ struct nucleiSpectra {
     spectra.get<TH1>(HIST("hEventSelections"))->GetXaxis()->SetBinLabel(nuclei::evSel::kINELgt0 + 2, "IsINELgt0");
 
     spectra.add("hRecVtxZData", "collision z position", HistType::kTH1F, {{200, -20., +20., "z position (cm)"}});
+    spectra.add("hCentralityEvents", "selected events", HistType::kTH1D, {centAxis});
     if (doprocessMC) {
       spectra.add("hGenVtxZ", " generated collision z position", HistType::kTH1F, {{200, -20., +20., "z position (cm)"}});
     }
@@ -655,6 +656,7 @@ struct nucleiSpectra {
     gRandom->SetSeed(bc.timestamp());
 
     spectra.fill(HIST("hRecVtxZData"), collision.posZ());
+    spectra.fill(HIST("hCentralityEvents"), getCentrality(collision));
 
     if (!collision.selection_bit(o2::aod::evsel::kNoITSROFrameBorder)) {
       spectra.fill(HIST("hRecVtxZDataITSrof"), collision.posZ());