Minor changes in histogram

Author: sawankumawat

PWGLF/Tasks/Resonances/kstarqa.cxx

@@ -292,7 +292,7 @@ struct Kstarqa {
     hInvMass.add("hAllRecCollisions", "All reconstructed events", kTH1F, {multiplicityAxis});
     hInvMass.add("MCcorrections/hImpactParameterRec", "Impact parameter in reconstructed MC", kTH1F, {impactParAxis});
     hInvMass.add("MCcorrections/hImpactParameterGen", "Impact parameter in generated MC", kTH1F, {impactParAxis});
-    hInvMass.add("MCcorrections/hImpactParametervsMultiplicity", "Impact parameter vs multiplicity in reconstructed MC", kTH1F, {{impactParAxis}, {multiplicityAxis}});
+    hInvMass.add("MCcorrections/hImpactParametervsMultiplicity", "Impact parameter vs multiplicity in reconstructed MC", kTH2F, {{impactParAxis}, {multiplicityAxis}});
     rEventSelection.add("tracksCheckData", "No. of events in the data", kTH1I, {{10, 0, 10}});
     rEventSelection.add("eventsCheckGen", "No. of events in the generated MC", kTH1I, {{10, 0, 10}});
     rEventSelection.add("recMCparticles", "No. of events in the reconstructed MC", kTH1I, {{20, 0, 20}});