Reject noise count (#736)

* only count lone hit before trigger

pax/config/XENON1T.ini

@@ -345,8 +345,6 @@ penalty_per_lone_hit = 1                    # "pe" equivalent penalty
 # Threshold to mark a suspicious channel
 penalty_geq_this_is_suspicious = 3          # "pe" equivalent penalty
 
-
-
 [BasicProperties.SumWaveformProperties]
 # Length of the peak sum waveform field.
 # Must be an even multiple of sample size, pax will add 1 sample width so there is a clear center.

pax/plugins/peak_processing/RejectNoiseHits.py

@@ -24,10 +24,11 @@ def transform_event(self, event):
         lone_hits = event.get_peaks_by_type(desired_type='lone_hit', detector='all')
         self.log.debug("This event has %d lone hits" % len(lone_hits))
         for lone_hit_peak in lone_hits:
-            channel = lone_hit_peak.hits[0]['channel']
-            event.lone_hits_per_channel_before[channel] += 1
-            penalty_per_ch[channel] += self.config['penalty_per_lone_hit']
-
+            if lone_hit_peak.left < 1e5:
+                # only count lone-hits before trigger positions
+                channel = lone_hit_peak.hits[0]['channel']
+                event.lone_hits_per_channel_before[channel] += 1
+                penalty_per_ch[channel] += self.config['penalty_per_lone_hit']
         # Add base penalties
         for channel, penalty in self.base_penalties.items():
             penalty_per_ch[channel] += penalty