Introduction
============


The LE3 :term:`Processing Function` is responsible for computing high level data products relevant to the Euclid project.

LE3 is organized in 7 work packages (:term:`WP`) covering different scientific areas illustrated in the figure below (with core science :term:`WP` in Euclid in blue):

.. image:: LE3_WorkPackages.png

These work packages are further divided into individual independent :term:`PF`.

For DR1-Foundation, only the:ref:`WP-ID`: :ref:`PF-VMPZ-ID`: Photometric redshift selection function was run, as it computes various maps useful to assess the data quality.