Merge pull request #37 from legend-exp/pr/fix-duplicate-aux-events

Handle duplicate aux entries  (pulser) in cross-system event building

Author: theHenks

src/calibrate_all.jl

@@ -154,7 +154,8 @@ function calibrate_all(data::LegendData, sel::AnyValiditySelection, datastore::A
     ), aux_events)
 
     global_events_pre = build_cross_system_events(system_events)
-    aux_cols = NamedTuple{keys(aux_events)}([StructVector(map(Broadcast.BroadcastFunction(only), columns(getproperty(global_events_pre, k)))) for k in keys(aux_events)])
+    # Aux channels may have duplicate entries per event from cross-system matching — take first
+    aux_cols = NamedTuple{keys(aux_events)}([StructVector(map(Broadcast.BroadcastFunction(first), columns(getproperty(global_events_pre, k)))) for k in keys(aux_events)])
     global_events = StructVector(merge(Base.structdiff(columns(global_events_pre), NamedTuple{keys(aux_events)}), (aux = StructArray(aux_cols),)))
 
     cross_systems_cols = (