Add GRB FAR field

gracedb/events/translator.py

@@ -652,5 +652,9 @@ def populateGrbEventFromVOEventFile(filename, event):
             break
     event.trigger_id = trigger_id
 
+    # Swift subthreshold GRBs have an extra FAR field
+    if 'FAR' in VOEvent_params:
+        event.far = float(VOEvent_params.get('FAR').get('value'))
+
     # Save event
     event.save()