revisit the FASP simulator software

Update for the FASP simulator software

• fix confusion wrt usage of DAQ time [clk] and physics time [ns] in digi time definition.
• add system time offset to equilibrate wrt to reference detectors (T0, ToF).
• use data from mCBM22 to calibrate TRD2D time resolution and offset for both EbyE and TB modes
• fix flushing of data during TB sumulations (still to be optimized wrt the event rate)

Time based simulations for mCBM22

• setup = setup_mcbm_beam_2022_05_23_nickel.C
• event rate = 1.e5 Hz
• time slice length = 1.4e5 ns

Event by event simulations (same as above)

Example of FASP simulator going from:

• physics energy deposits / read-out area pad (markers)
• amplifier shaper (black)
• analogue output (red) *) the calibration and mappings from the actual data taking are used to generate the detector response.

core/detectors/trd/CbmTrdFASP.h

@@ -127,8 +127,8 @@ protected:
   int fAsicId[2]            = {-1, -1};  ///< identifier of FASP(s) in module
   int fChId[2]              = {-1, -1};  ///< FASP channels being processed
   std::vector<Float_t> fOut = {0.};      ///< analog output for the current channel
-  std::map<int, std::array<int, NFASPCH>> fGraphMap =
-    {};                                    ///<  map of ASIC_id and (ch_id, output_id of FASP signals graphs) pairs
+  std::map<int, std::array<int, NFASPCH>>
+    fGraphMap;                             ///<  map of ASIC_id and (ch_id, output_id of FASP signals graphs) pairs
   TGraph* fGraph[NGRAPH]     = {nullptr};  ///< graph representations of analog FASP response
   TGraph* fGraphShp[NGRAPH]  = {nullptr};  ///< graph representations of FASP shaper
   TGraph* fGraphPhys[NGRAPH] = {nullptr};  ///< graph representations of physics digi
   TLine* fGthr               = nullptr;    ///< graph representation of various thresholds
   TCanvas* fMonitor          = nullptr;    ///< monitor canvas when drawing
 
   // CADENCE parameters
   static const Int_t fgkNDB = 53;                       ///< DB shaper size