code: def plot(self):
          
          msg = "'%s.plot': ADW 2018-05-05"%self.__class__.__name__
          DeprecationWarning(msg)
  
          import ugali.utils.plotting
  
          mask = hp.UNSEEN * np.ones(hp.nside2npix(self.nside))
          mask[self.roi.pixels] = self.mask_roi_sparse
          mask[mask == 0.] = hp.UNSEEN
          ugali.utils.plotting.zoomedHealpixMap('Completeness Depth',
                                                mask,
                                                self.roi.lon, self.roi.lat,
                                                self.roi.config.params['coords']['roi_radius'])
docs: Plot the magnitude depth.