Example of the simulated spectra on a spaxel rescaled according to the wavelength for SPHERE IFS simulations. The dotted line represents the value of one single pixel on the PSFs used as input for the CSP code. The solid line represents the same thing on the images of the datacube resulting from the CSP simulation (passage of the light through the instrument and correct calibration to create the datacube). The absolute values of these two curve have been normalized to be able to overplot one on the other.