Comparing the simulated AGN (star) flux to the PSF flux estimated by GALFIT for the three UV filters. The star symbols show the best-fit results without a Sérsic profile, while the circle symbols show the results when the fitting with a Sérsic profile does not converge but we still get better constraints on the PSF profile compared to the fit without a Sérsic profile. The x = y line is shown in red. The color bar indicates the AGN light ratio in percent.