adding total deposited energy in the sensitive volume as a new truth instruction dtype

wfsim/strax_interface.py

@@ -1,5 +1,6 @@
 from copy import deepcopy
 from immutabledict import immutabledict
+import sys
 import logging
 import numpy as np
 import pandas as pd
@@ -30,6 +31,7 @@
                      (('Number of quanta', 'amp'), np.int32),
                      (('Recoil type of interaction.', 'recoil'), np.int8),
                      (('Energy deposit of interaction', 'e_dep'), np.float32),
+                     (('Total energy deposit in the sensitive volume', 'tot_e'), np.float32),
                      (('Eventid like in geant4 output rootfile', 'g4id'), np.int32),
                      (('Volume id giving the detector subvolume', 'vol_id'), np.int32),
                      (('Local field [ V / cm ]', 'local_field'), np.float64),
@@ -799,6 +801,10 @@ def get_instructions(self):
                 epix.run_epix.setup(epix_config),
                 return_wfsim_instructions=True)
 
+            if len(self.instructions_epix)==0 and not 'nveto' in self.config['targets']:
+                print("the instruction is empty for TPC")
+                sys.exit(0)
+
             self.g4id.append(self.instructions_epix['g4id'])
             log.debug("Epix produced %d instructions in tpc" % (len(self.instructions_epix)))