added a second threshold to control what is a double count in centroid_one

src/toolbox_scs/detectors/hrixs.py

@@ -230,6 +230,7 @@ class hRIXS:
     # centroid
     THRESHOLD = None  # pixel counts above which a hit candidate is assumed
     STD_THRESHOLD = 3.5  # same as THRESHOLD, in standard deviations
+    DBL_THRESHOLD = 7.5  # factor used for double hits in centroid_one
     CURVE_A = 0  # curvature parameters as determined elsewhere
     CURVE_B = 0
 
@@ -354,7 +355,7 @@ class hRIXS:
             threshold = self.THRESHOLD
         # Threshold for double photons chosen to be the same ratio to single
         # photons as found in the ESRF method
-        SpotHIGH=7.5*threshold
+        SpotHIGH=self.DBL_THRESHOLD*threshold
         if self.AVOID_DBL:
             SpotHIGH = 100000
         middle = corners[1:-1, 1:-1]