correct polar mask when angle range is 180 deg

src/toolbox_scs/detectors/azimuthal_integrator.py

@@ -131,7 +131,7 @@ class AzimuthalIntegratorDSSC(object):
             raise ValueError('Integration angle too narrow')
     
         if np.abs(polar_range[1] - polar_range[0]) == 180:
-            self.polar_mask = np.ones_like(pos)
+            self.polar_mask = np.ones(self.shape)
         else:
             tmin, tmax = np.deg2rad(np.sort(polar_range)) % np.pi
             polar_array = np.arctan2(xcoord, ycoord)