Comparisons of the synthetic pulse waveforms from Tests OS1a and OS1b. The point-like (θ_spot = 0.01 rad) and large spot (θ_spot = 1 rad) are shown on the left and right, respectively. The top panel shows the pulse waveforms. The middle panel shows the fractional difference between the CU (black), GSFC-M (orange), GSFC-S (blue), Alberta (purple), and Amsterdam (green) fluxes and the IM flux at each phase bin, expressed as a percentage. In the bottom panel, the IM flux is subtracted from the other fluxes and the result is divided by the median IM flux over all phases. The pair of dotted lines show the target ±0.1% measurement precision. Except near eclipses, where the flux is two orders of magnitude smaller than it is at the peak, the agreement between the codes is significantly better than the target precision.