[PWGCF] add more flags of ITS layers quality (#15879)

Author: Luzhiyongg

PWGCF/Flow/Tasks/flowRunbyRun.cxx

@@ -90,7 +90,8 @@ struct FlowRunbyRun {
   O2_DEFINE_CONFIGURABLE(cfgEvSelkNoSameBunchPileup, bool, false, "rejects collisions which are associated with the same found-by-T0 bunch crossing")
   O2_DEFINE_CONFIGURABLE(cfgEvSelkIsGoodZvtxFT0vsPV, bool, false, "removes collisions with large differences between z of PV by tracks and z of PV from FT0 A-C time difference, use this cut at low multiplicities with caution")
   O2_DEFINE_CONFIGURABLE(cfgEvSelkNoCollInTimeRangeStandard, bool, false, "no collisions in specified time range")
-  O2_DEFINE_CONFIGURABLE(cfgEvSelkIsGoodITSLayersAll, bool, true, "cut time intervals with dead ITS staves")
+  O2_DEFINE_CONFIGURABLE(cfgEvSelkIsGoodITSLayers, bool, true, "cut time intervals with dead ITS staves")
+  O2_DEFINE_CONFIGURABLE(cfgEvSelkIsGoodITSLayersFlag, int, 0, "0: kIsGoodITSLayersAll; 1: kIsGoodITSLayer0123; 2: kIsGoodITSLayer3")
   O2_DEFINE_CONFIGURABLE(cfgEvSelkNoCollInRofStandard, bool, false, "no other collisions in this Readout Frame with per-collision multiplicity above threshold")
   O2_DEFINE_CONFIGURABLE(cfgEvSelkNoHighMultCollInPrevRof, bool, false, "veto an event if FT0C amplitude in previous ITS ROF is above threshold")
   O2_DEFINE_CONFIGURABLE(cfgEvSelMultCorrelation, bool, true, "Multiplicity correlation cut")
@@ -185,6 +186,12 @@ struct FlowRunbyRun {
     c3232,
     kCount_TProfileNames
   };
+  enum GoodITSLayersFlag {
+    kITSLayersAll,
+    kITSLayer0123,
+    kITSLayer3,
+    kCount_ITSLayersFlag
+  };
   int mRunNumber{-1};
   uint64_t mSOR{0};
   double mMinSeconds{-1.};
@@ -382,7 +389,8 @@ struct FlowRunbyRun {
     histos[hEventCountSpecific]->GetXaxis()->SetBinLabel(2, "kNoSameBunchPileup");
     histos[hEventCountSpecific]->GetXaxis()->SetBinLabel(3, "kIsGoodZvtxFT0vsPV");
     histos[hEventCountSpecific]->GetXaxis()->SetBinLabel(4, "kNoCollInTimeRangeStandard");
-    histos[hEventCountSpecific]->GetXaxis()->SetBinLabel(5, "kIsGoodITSLayersAll");
+    std::string itsLayersFlag[kCount_ITSLayersFlag] = {"ITSLayersAll", "ITSLayers0123", "ITSLayer3"};
+    histos[hEventCountSpecific]->GetXaxis()->SetBinLabel(5, Form("kIsGood%s", itsLayersFlag[cfgEvSelkIsGoodITSLayersFlag].c_str()));
     histos[hEventCountSpecific]->GetXaxis()->SetBinLabel(6, "kNoCollInRofStandard");
     histos[hEventCountSpecific]->GetXaxis()->SetBinLabel(7, "kNoHighMultCollInPrevRof");
     histos[hEventCountSpecific]->GetXaxis()->SetBinLabel(8, "occupancy");
@@ -456,12 +464,17 @@ struct FlowRunbyRun {
     }
     if (cfgEvSelkNoCollInTimeRangeStandard)
       th1sList[runNumber][hEventCountSpecific]->Fill(3.5);
-    if (cfgEvSelkIsGoodITSLayersAll && !collision.selection_bit(o2::aod::evsel::kIsGoodITSLayersAll)) {
+    if (cfgEvSelkIsGoodITSLayers) {
       // from Jan 9 2025 AOT meeting
       // cut time intervals with dead ITS staves
-      return 0;
+      if (cfgEvSelkIsGoodITSLayersFlag == kITSLayersAll && !collision.selection_bit(o2::aod::evsel::kIsGoodITSLayersAll))
+        return 0;
+      if (cfgEvSelkIsGoodITSLayersFlag == kITSLayer0123 && !collision.selection_bit(o2::aod::evsel::kIsGoodITSLayer0123))
+        return 0;
+      if (cfgEvSelkIsGoodITSLayersFlag == kITSLayer3 && !collision.selection_bit(o2::aod::evsel::kIsGoodITSLayer3))
+        return 0;
     }
-    if (cfgEvSelkIsGoodITSLayersAll)
+    if (cfgEvSelkIsGoodITSLayers)
       th1sList[runNumber][hEventCountSpecific]->Fill(4.5);
     if (cfgEvSelkNoCollInRofStandard && !collision.selection_bit(o2::aod::evsel::kNoCollInRofStandard)) {
       // no other collisions in this Readout Frame with per-collision multiplicity above threshold