def define_obs_table(self): """Make an obs table for the OFF runs list. This table is created from the obs table of all the runs Returns ------- table : `~astropy.table.Table` observation table of the OFF run List """ table = Table.read(self.run_list, format='ascii.csv') obs_table = self.data_store.obs_table table = table_join(table, obs_table) return table