@@ -141,7 +141,7 @@ o2physics_add_dpl_workflow(task-lc
 o2physics_add_dpl_workflow(task-upc-lc
                     SOURCES taskUpcLc.cxx
                     REUSE_FROM HfCandidatesPCH
-                    PUBLIC_LINK_LIBRARIES O2Physics::AnalysisCore O2Physics::SGCutParHolder O2Physics::EventFilteringUtils
+                    PUBLIC_LINK_LIBRARIES O2Physics::AnalysisCore O2Physics::AnalysisCCDB O2Physics::SGCutParHolder O2Physics::EventFilteringUtils
                     COMPONENT_NAME Analysis)
 
 o2physics_add_dpl_workflow(task-lc-to-k0s-p
 
@@ -29,6 +29,7 @@
 #include "PWGUD/Core/SGSelector.h"
 #include "PWGUD/Core/UPCHelpers.h"
 
+#include "Common/CCDB/ctpRateFetcher.h"
 #include "Common/Core/RecoDecay.h"
 #include "Common/DataModel/EventSelection.h"
 #include "Common/DataModel/Multiplicity.h"
@@ -48,6 +49,9 @@
 #include <Framework/runDataProcessing.h>
 #include <ReconstructionDataFormats/Vertex.h>
 
+#include <TH1.h>
+#include <TH2.h>
+
 #include <array>
 #include <cmath>
 #include <cstdint>
@@ -70,6 +74,8 @@ namespace full
 DECLARE_SOA_COLUMN(M, m, float);
 DECLARE_SOA_COLUMN(Pt, pt, float);
 DECLARE_SOA_COLUMN(BkgScore, bkgScore, float);
+DECLARE_SOA_COLUMN(RunNumber, runNumber, int32_t);        //! Run number of the collision
+DECLARE_SOA_COLUMN(HasLcCandidate, hasLcCandidate, bool); //! At least one selected Lc candidate within the task rapidity acceptance
 DECLARE_SOA_COLUMN(PtProng0, ptProng0, float);
 DECLARE_SOA_COLUMN(PtProng1, ptProng1, float);
 DECLARE_SOA_COLUMN(PtProng2, ptProng2, float);
@@ -94,12 +100,15 @@ DECLARE_SOA_TABLE(HfUpcQa, "AOD", "HFUPCQA",
                   full::AmpFT0A,
                   full::AmpFT0C,
                   full::ZdcTimeZNA,
-                  full::ZdcTimeZNC);
+                  full::ZdcTimeZNC,
+                  full::HasLcCandidate,
+                  full::RunNumber);
 
 DECLARE_SOA_TABLE(HfUpcLcBdtInfos, "AOD", "HFUPCLCBDTINFOS",
                   full::M,
                   full::Pt,
-                  full::BkgScore);
+                  full::BkgScore,
+                  full::RunNumber);
 
 DECLARE_SOA_TABLE(HfUpcLcInfos, "AOD", "HFUPCLCINFOS",
                   full::M,
@@ -153,13 +162,15 @@ struct HfTaskUpcLc {
   Configurable<bool> fillHistQa{"fillHistQa", false, "Fill histograms for UPC detector QA"};
   Configurable<bool> verticesWithUpc{"verticesWithUpc", false, "Consider vertices with UPC settings"};
   Configurable<float> zdcTimeThreshold{"zdcTimeThreshold", 2., "Threshold for ZNA/ZNC time"};
+  Configurable<std::string> irSource{"irSource", "ZNC hadronic", "Estimator of the interaction rate (pp: T0VTX, Pb-Pb: ZNC hadronic)"};
   // CCDB configuration
   Configurable<std::string> ccdbUrl{"ccdbUrl", "http://alice-ccdb.cern.ch", "url of the ccdb repository"};
   Configurable<std::string> ccdbPathGrp{"ccdbPathGrp", "GLO/GRP/GRP", "Path of the grp file (Run 2)"};
   Configurable<std::string> ccdbPathGrpMag{"ccdbPathGrpMag", "GLO/Config/GRPMagField", "CCDB path of the GRPMagField object (Run 3)"};
 
   HfEventSelection hfEvSel;         // event selection and monitoring
   HfUpcGapThresholds upcThresholds; // UPC gap determination thresholds
+  ctpRateFetcher mRateFetcher;
   SliceCache cache;
   Service<o2::ccdb::BasicCCDBManager> ccdb{};
 
@@ -174,6 +185,8 @@ struct HfTaskUpcLc {
   Preslice<aod::HfCand3Prong> candLcPerCollision = aod::hf_cand::collisionId;
   PresliceUnsorted<aod::McCollisionLabels> colPerMcCollision = aod::mcparticle::mcCollisionId;
 
+  ConfigurableAxis axisInteractionRate{"axisInteractionRate", {1000, 0., 100.}, "Interaction rate axis (kHz)"};
+
   HistogramRegistry registry{"registry", {}};
 
   enum MlClasses : int {
@@ -191,6 +204,11 @@ struct HfTaskUpcLc {
     }
 
     auto vbins = std::vector<double>(binsPt);
+    if (fillHistQa) {
+      auto hInteractionRateVsRun = registry.add<TH2>("Data/hInteractionRateVsRun", "Selected collisions;Run number;Hadronic interaction rate (kHz)", HistType::kTH2F, {{1, 0., 1.}, axisInteractionRate});
+      hInteractionRateVsRun->SetCanExtend(TH1::kXaxis);
+      hInteractionRateVsRun->GetXaxis()->LabelsOption("v");
+    }
     registry.add("Data/fitInfo/ampFT0A_vs_ampFT0C", "FT0-A vs FT0-C amplitude;FT0-A amplitude (a.u.);FT0-C amplitude (a.u.)", {HistType::kTH2F, {{200, 0., 200}, {200, 0., 200}}});
     registry.add("Data/zdc/energyZNA_vs_energyZNC", "ZNA vs ZNC common energy;E_{ZNA}^{common} (a.u.);E_{ZNC}^{common} (a.u.)", {HistType::kTH2F, {{100, 0., 10}, {100, 0., 10}}});
     registry.add("Data/zdc/timeZNA_vs_timeZNC", "ZNA vs ZNC time;ZNA Time;ZNC time", {HistType::kTH2F, {{200, -10., 10}, {200, -10., 10}}});
@@ -323,17 +341,25 @@ struct HfTaskUpcLc {
       registry.fill(HIST("Data/hUpcMulti"), multNTracksPV);
       registry.fill(HIST("Data/hUpcVtz"), posZ);
 
-      if (fillTreeUpcQa) {
-        rowUpcQa(numPvContributors, multNTracksPV, posZ, fitInfo.ampFT0A, fitInfo.ampFT0C, zdcTimeZNA, zdcTimeZNC);
+      if constexpr (!IsMc) {
+        if (fillHistQa) {
+          const double rate = mRateFetcher.fetch(ccdb.service, bc.timestamp(), bc.runNumber(), irSource, true);
+          if (rate >= 0.) {
+            const auto runLabel = std::to_string(bc.runNumber());
+            registry.get<TH2>(HIST("Data/hInteractionRateVsRun"))->Fill(runLabel.c_str(), rate * 1.e-3, 1.); // Hz to kHz
+          }
+        }
       }
 
+      bool hasLcCandidate = false;
       for (const auto& candidate : groupedLcCandidates) {
         if (!(candidate.hfflag() & 1 << aod::hf_cand_3prong::DecayType::LcToPKPi)) {
           continue;
         }
         if (yCandRecoMax >= 0. && std::abs(HfHelper::yLc(candidate)) > yCandRecoMax) {
           continue;
         }
+        hasLcCandidate = true;
         const auto pt = candidate.pt();
         const auto ptProng0 = candidate.ptProng0();
         const auto ptProng1 = candidate.ptProng1();
@@ -371,7 +397,7 @@ struct HfTaskUpcLc {
               outputBkg = mlProb[MlClassBackground]; /// bkg score
             }
             /// Fill the ML outputScores and variables of candidate
-            rowCandUpcBdt(massLc, pt, outputBkg);
+            rowCandUpcBdt(massLc, pt, outputBkg, bc.runNumber());
 
           } else {
             rowCandUpc(massLc, pt, ptProng0, ptProng1, ptProng2, chi2PCA, decayLength, cpa);
@@ -385,6 +411,10 @@ struct HfTaskUpcLc {
           fillTHnData(false);
         }
       }
+      if (fillTreeUpcQa) {
+        // One QA row per selected collision, including collisions without Lc candidates.
+        rowUpcQa(numPvContributors, multNTracksPV, posZ, fitInfo.ampFT0A, fitInfo.ampFT0C, zdcTimeZNA, zdcTimeZNC, hasLcCandidate, bc.runNumber());
+      }
     }
   }