Fix histogram on data with no saturation value

src/toolbox_scs/routines/boz.py

@@ -524,9 +524,9 @@ def histogram_module(proposalNB, runNB, moduleNB, mask=None):
         w = da.repeat(da.repeat(da.array(mask[None, None, :, :]),
                 arr.shape[1], axis=1), arr.shape[0], axis=0)
         w = w.rechunk((100, -1, -1, -1))
-        return da.bincount(arr.ravel(), w.ravel()).compute()
+        return da.bincount(arr.ravel(), w.ravel(), minlength=512).compute()
     else:
-        return da.bincount(arr.ravel()).compute()
+        return da.bincount(arr.ravel(), minlength=512).compute()
 
 
 def inspect_histogram(proposalNB, runNB, moduleNB,