EIT data import for FZJ Medusa systems

def import_eit_fzj(self, filename, configfile, correction_file=None,
                       timestep=None, **kwargs):
        """EIT data import for FZJ Medusa systems"""
        # we get not electrode positions (dummy1) and no topography data
        # (dummy2)
        df_emd, dummy1, dummy2 = eit_fzj.read_3p_data(
            filename,
            configfile,
            **kwargs
        )
        if correction_file is not None:
            eit_fzj_utils.apply_correction_factors(df_emd, correction_file)

        if timestep is not None:
            df_emd['timestep'] = timestep

        self._add_to_container(df_emd)

        print('Summary:')
        self._describe_data(df_emd)