start working on the deadtime correction.

src/classes/PMusr.cpp

@@ -721,6 +721,22 @@ PRawRunDataSet* PRawRunData::GetDataSet(const UInt_t idx, Bool_t wantHistoNo)
     return fData.GetSet(idx);
 }
 
+//--------------------------------------------------------------------------
+// DeadTimeCorrectionReady (public)
+//--------------------------------------------------------------------------
+/**
+ * <p>Checks if deadtime correction information is sufficient to apply it.
+ * This means that fNumberOfGoodFrames must be present and the deadtime
+ * parameter vector.
+ *
+ * @return true if ready to apply deadtime correctio, false otherwise
+ */
+const Bool_t PRawRunData::DeadTimeCorrectionReady()
+{
+  if ((fNumberOfGoodFrames > 0) && (fDeadTimeParam.size() > 0))
+    return true;
+  return false;
+}
 
 //--------------------------------------------------------------------------
 // SetRingAnode (public)

src/classes/PRunSingleHisto.cpp

@@ -1069,6 +1069,38 @@ Bool_t PRunSingleHisto::PrepareData()
     forward[i] = *runData->GetDataBin(histoNo[i]);
   }
 
+  // check if a dead time correction has to be done
+  // first check the global block
+  TString dtcg = fMsrInfo->GetMsrGlobal()->GetDeadTimeCorrection();
+  Int_t dtcg_tag = 0; // 0=no, 1=file, 2=estimate
+  if (dtcg.Contains("file", TString::kIgnoreCase)) {
+    dtcg_tag = 1;
+  } else if (dtcg.Contains("estimate", TString::kIgnoreCase)) {
+    dtcg_tag = 2;
+  }
+  // now check each run
+  TString dtcr{"no"};
+  Bool_t needToCheck{true};
+  for (UInt_t i=0; i<histoNo.size(); i++) {
+    dtcr = fRunInfo->GetDeadTimeCorrection();
+    if (dtcr.Contains("file", TString::kIgnoreCase) || (dtcg_tag != 0)) {
+      if (runData->DeadTimeCorrectionReady()) {
+        needToCheck = false;
+        // Dead time correction: n_true = n_obs / (1 - n_obs * t_dt / (good_frames * dt))
+        Double_t n_true;
+        Int_t gf = runData->GetNumberOfGoodFrames();
+        std::vector<float> t_dt = runData->GetDeadTimeParam();
+        for (UInt_t j=0; j<forward[i].size(); j++) {
+          n_true = forward[i][j] / (1.0 - forward[i][j] * t_dt[histoNo[i]] / (gf * fTimeResolution));
+          forward[i][j] = n_true;
+        }
+      }
+    }
+    if ((dtcr.Contains("estimate", TString::kIgnoreCase) || (dtcg_tag != 0)) && needToCheck) {
+      std::cerr << "as35> run: deadtime correction: " << dtcr.Data() << ", global: " << dtcg_tag << std::endl;
+    }
+  }
+
   // check if there are runs to be added to the current one
   if (fRunInfo->GetRunNameSize() > 1) { // runs to be added present
     PRawRunData *addRunData;