Introduction ============ This section contains the data products for the following internal data `PF`: * :ref:`PF-VMPZ-ID`: Photometric redshift selection function [**Priority 1**] * :ref:`PF-VMSP-ID`: Spectroscopic redshift selection function [**Priority 1**] * :ref:`PF-SEL-ID`: Purity and completeness of galaxy samples and the selection of a catalog that maximizes both [**Priority 1**]