Apply suggestions from @paulromano

Co-authored-by: Paul Romano <paul.k.romano@gmail.com>

Author: pshriwise

openmc_plotter/plotmodel.py

@@ -518,7 +518,7 @@ def _create_distribcell_image(self, tally, tally_value, scores, nuclides, view=N
         cell_id_mask = self.cell_ids == cell_id
         for i, v in enumerate(data):
             instance_mask = self.instances == i
-            image_data[np.logical_and(cell_id_mask, instance_mask)] = v
+            image_data[cell_id_mask & instance_mask] = v
 
         data_min = np.min(data)
         data_max = np.max(data)