Temporal FWHM reconstruction capability. Top panels: mean (open diamonds) and standard deviation (vertical lines) of the reconstructed FWHM (normalized to the simulated FWHM) as a function of the peak flux for different values of the FWHM. Bottom panels: number of flares (normalized to the number of detected flares) for which the reconstructed temporal FWHM is below a factor of of the simulated value (diamonds), or above a factor of 2 of the simulated value (crosses). Where values are not reported in bottom panels, upper limits of 6.6 (with 99.87% c.l.) must be considered.