def METHOD_NAME(self):
    """Test event file reading."""
    fname = os.path.join(datadir, "monol_testA_calib.evt")
    with pytest.warns(AstropyUserWarning, match="No extensions found with a"):
        vals = load_events_and_gtis(fname, additional_columns=["energy"])
    # These energies were calibrated with a different calibration than
    # returned from rough_calibration, on purpose! (notice the +1.)
    assert np.allclose(vals.energy_list, vals.pi_list * 0.04 + 1.6 + 1.0)