Constraints on stellar masses and SFRs using the non-parametric SFH with flat prior. Left panel: stellar mass recovered with CIGALE using the non-parametric SFH with no prior vs the true stellar mass of the simulated SEDs. The light green dots indicate data points obtained using a non-parametric SFH with bursty continuity prior, while the dark green dots are data points obtained with the non-parametric SFH without prior proposed in this work. In this simple test procedure, the errors on the stellar mass are smaller than the size of the circles. Right panel: same as the left panel, but for the SFR.