Top: redshift distribution of 1543 FORS2 spectra produced by XDCP and extracted with F-VIPGI. The solid line marks the secure assigned redshifts ( ≥ 75% confidence on the assigned value) while the dotted line refers to unsafe ones (confidence ≤ 50%). The secure assessments represent ~72% of the entire sample at 0 < z ≤ 3 and increases to ~78% including also stars. Bottom: distribution of rms wavelength calibrations computed for the corresponding 1230 reduced slits observed with the grism 300I+11. The median value is ⟨ rms ⟩ _λ = (0.30 ± 0.05) Å.