Add event selection on ITS layers

Author: gbencedi

PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx

@@ -120,6 +120,7 @@ enum class EvtSel {
   evtNoCollInRofStrict,
   evtNoCollInRofStandard,
   evtNoHighMultCollInPrevRof,
+  evtGoodITSLayersAll,
   evtBelowMinOccup,
   evtAboveMaxOccup,
   evtRCTFlagChecker,
@@ -428,6 +429,7 @@ struct DndetaMFTPbPb {
     Configurable<bool> requireNoCollInRofStrict{"requireNoCollInRofStrict", true, "requireNoCollInRofStrict"};
     Configurable<bool> requireNoCollInRofStandard{"requireNoCollInRofStandard", false, "requireNoCollInRofStandard"};
     Configurable<bool> requireNoHighMultCollInPrevRof{"requireNoHighMultCollInPrevRof", false, "requireNoHighMultCollInPrevRof"};
+    Configurable<bool> requireGoodITSLayersAll{"requireGoodITSLayersAll", true, "requireGoodITSLayersAll"};
     Configurable<bool> requireNoCollInTimeRangeStd{"requireNoCollInTimeRangeStd", false, "reject collisions corrupted by the cannibalism, with other collisions within +/- 10 microseconds"};
     Configurable<bool> requireNoCollInTimeRangeNarrow{"requireNoCollInTimeRangeNarrow", false, "reject collisions corrupted by the cannibalism, with other collisions within +/- 10 microseconds"};
     Configurable<uint> occupancyEstimator{"occupancyEstimator", 1, "Occupancy estimator: 1 = trackOccupancyInTimeRange, 2 = ft0cOccupancyInTimeRange"};
@@ -577,6 +579,7 @@ struct DndetaMFTPbPb {
     labelEvtSel[static_cast<int>(EvtSel::evtNoCollInRofStrict)] = "kNoCollInRofStrict";
     labelEvtSel[static_cast<int>(EvtSel::evtNoCollInRofStandard)] = "kNoCollInRofStandard";
     labelEvtSel[static_cast<int>(EvtSel::evtNoHighMultCollInPrevRof)] = "kNoHighMultCollInPrevRof";
+    labelEvtSel[static_cast<int>(EvtSel::evtGoodITSLayersAll)] = "kIsGoodITSLayersAll";
     labelEvtSel[static_cast<int>(EvtSel::evtBelowMinOccup)] = "Below min occup.";
     labelEvtSel[static_cast<int>(EvtSel::evtAboveMaxOccup)] = "Above max occup.";
     labelEvtSel[static_cast<int>(EvtSel::evtRCTFlagChecker)] = "RCT Flag Checker";
@@ -2241,6 +2244,12 @@ struct DndetaMFTPbPb {
     if constexpr (fillHis) {
       registry.fill(HIST("Events/hEvtSel"), static_cast<int>(EvtSel::evtNoHighMultCollInPrevRof));
     }
+    if (eventCuts.requireGoodITSLayersAll && !collision.selection_bit(o2::aod::evsel::kIsGoodITSLayersAll)) {
+      return false;
+    }
+    if constexpr (fillHis) {
+      registry.fill(HIST("Events/hEvtSel"), static_cast<int>(EvtSel::evtGoodITSLayersAll));
+    }
     if (eventCuts.minOccupancy >= 0 &&
         getOccupancy(collision, eventCuts.occupancyEstimator) <
           eventCuts.minOccupancy) {