Boolean to check L1Final decision in BX-1

Author: lathomas

PhysicsTools/NanoAOD/plugins/L1TriggerResultsConverter.cc

@@ -120,6 +120,7 @@ void L1TriggerResultsConverter::beginRun(edm::Run const&, edm::EventSetup const&
     if (store_unprefireable_bits_) {
       names_.push_back("L1_UnprefireableEvent_TriggerRules");
       names_.push_back("L1_UnprefireableEvent_FirstBxInTrain");
+      names_.push_back("L1_FinalOR_BXmin1");
     }
   }
 }
@@ -128,13 +129,16 @@ void L1TriggerResultsConverter::beginRun(edm::Run const&, edm::EventSetup const&
 
 void L1TriggerResultsConverter::produce(edm::Event& iEvent, const edm::EventSetup& iSetup) {
   const std::vector<bool>* wordp = nullptr;
+  const std::vector<bool>* wordp_bxmin1 = nullptr;
   bool unprefireable_bit_triggerrules = false;
   bool unprefireable_bit_firstbxintrain = false;
+  bool l1FinalOR_bxmin1 = false;
 
   if (!legacyL1_) {
     const auto& resultsProd = iEvent.get(token_);
     if (not resultsProd.isEmpty(0)) {
       wordp = &resultsProd.at(0, 0).getAlgoDecisionFinal();
+      wordp_bxmin1 = &resultsProd.at(-1, 0).getAlgoDecisionFinal();
     }
     if (store_unprefireable_bits_) {
       auto handleExtResults = iEvent.getHandle(token_ext_);
@@ -158,16 +162,19 @@ void L1TriggerResultsConverter::produce(edm::Event& iEvent, const edm::EventSetu
   for (size_t nidx = 0; nidx < indices_size; nidx++) {
     unsigned int const index = indices_[nidx];
     bool result = wordp ? wordp->at(index) : false;
+    bool result_bxmin1 = wordp_bxmin1 ? wordp_bxmin1->at(index) : false;
     if (not mask_.empty())
       result &= (mask_.at(index) != 0);
     l1bitsAsHLTStatus[nidx] = edm::HLTPathStatus(result ? edm::hlt::Pass : edm::hlt::Fail);
     //Stores the unprefirable event decision corresponding to events in the first bx of a train.
     //In 2022/2023 the bx before that was manually masked.
     //Technically this was done by enabling the L1_FirstBunchBeforeTrain bit in the L1 menu, and vetoing that bit after L1 Final OR is evaluated.
-    if (names_[nidx] == "L1_FirstBunchBeforeTrain" && !legacyL1_) {
-      const auto& resultsProd = iEvent.get(token_);
-      if (!(&resultsProd)->isEmpty(-1)) {
-        unprefireable_bit_firstbxintrain = (&resultsProd)->begin(-1)->getAlgoDecisionFinal(index);
+    if (!legacyL1_) {
+      if (names_[nidx] == "L1_FirstBunchBeforeTrain")
+        unprefireable_bit_firstbxintrain = result_bxmin1;
+      //If any other seed was fired in BX-1 there is some prefiring
+      else if (result_bxmin1) {
+        l1FinalOR_bxmin1 = true;
       }
     }
   }
@@ -176,6 +183,7 @@ void L1TriggerResultsConverter::produce(edm::Event& iEvent, const edm::EventSetu
         edm::HLTPathStatus(unprefireable_bit_triggerrules ? edm::hlt::Pass : edm::hlt::Fail);
     l1bitsAsHLTStatus[indices_size + 1] =
         edm::HLTPathStatus(unprefireable_bit_firstbxintrain ? edm::hlt::Pass : edm::hlt::Fail);
+    l1bitsAsHLTStatus[indices_size + 2] = edm::HLTPathStatus(l1FinalOR_bxmin1 ? edm::hlt::Pass : edm::hlt::Fail);
   }
   //mimic HLT trigger bits for L1
   auto out = std::make_unique<edm::TriggerResults>(l1bitsAsHLTStatus, names_);