Examples of redshift distributions (left) and PIT distributions (right; see text for details) for a tomographic bin selected to 0.8 < z_p < 1 using DES/Euclid photo-z. In these examples, we assume a training sample extracted from a SOM, with two galaxies per cell. Top and bottom panels: results before and after zPDF de-biasing, respectively. Redshift distributions and PITs are shown for the true redshift distribution (blue) and redshift distributions estimated using the zPDF method when incorporating photo-z (red) and uniform (black) priors.