Added configurable for IR selection

Author: gbencedi

PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx

@@ -126,7 +126,8 @@ struct DndetaMFTPbPb {
     Configurable<float> minOccupancy{
       "minOccupancy", -1, "minimum occupancy from neighbouring collisions"};
     Configurable<float> maxOccupancy{
-      "maxOccupancy", -1, "maximum occupancy from neighbouring collisions"};
+      "maxOccupancy", -1, "maximum occupancy from neighbouring collisions"};                          
+    Configurable<bool> cfgSelInteractionRate{"cfgSelInteractionRate", false, " Get Interaction rate from CCDB"};
     Configurable<float> minIR{"minIR", -1, "minimum IR (kHz) collisions"};
     Configurable<float> maxIR{"maxIR", -1, "maximum IR (kHz) collisions"};
   } eventCuts;
@@ -1122,8 +1123,10 @@ struct DndetaMFTPbPb {
     if (!isGoodEvent<true>(collision)) {
       return;
     }
-    if (!isIRSelected(bc, true)) {
-      return;
+    if (cfgSelInteractionRate) {
+      if (!isIRSelected(bc, true)) {
+        return;
+      }
     }
 
     auto z = collision.posZ();
@@ -1171,8 +1174,10 @@ struct DndetaMFTPbPb {
     if (!isGoodEvent<false>(collision)) {
       return;
     }
-    if (!isIRSelected(bc, true)) {
-      return;
+    if (cfgSelInteractionRate) {
+      if (!isIRSelected(bc, true)) {
+        return;
+      }
     }
 
     auto z = collision.posZ();