The color offset and scatter around the stellar sequence on a color-color diagram are computed as part of the validation tests.  Only a few plots are shown in the data release paper, but the plots for all the fields are available below.  In each field, the top row shows the color offset and bottom row shows the color scatter.  Most fields have good colors, but a small fraction of the entire release area suffers from the PSF modeling problem (see the data release paper for details).  VVDS is the prime example of this.  Please be sure not to use the problematic patches in your work.  The patch_qa table in the database allows you to identify those bad patches easily (see also FAQ).

• Urtra Deep
  • COSMOS   SXDS  
• Deep
  • COSMOS   DEEP2-3   ELAIS-N1   XMM-LSS  
• Wide
  • XMM-LSS   GAMA09H   WIDE12H   GAMA15H   HECTOMAP   VVDS   AEGIS  

Urtra Deep

COSMOS

△top

	r, i, z	i, z, y	r, i, n816	g, r, i	i, z, n921
offset
scatter

SXDS

△top

	i, z, y	r, i, n816	i, z, n921	r, i, z	g, r, i
offset
scatter

Deep

COSMOS

△top

	r, i, z	i, z, y	i, z, n921	r, i, n816	g, r, i
offset
scatter

DEEP2-3

△top

	r, i, z	r, i, n816	g, r, i	i, z, n921	i, z, y
offset
scatter

ELAIS-N1

△top

	r, i, n816	i, z, n921	i, z, y	r, i, z	g, r, i
offset
scatter

XMM-LSS

△top

	g, r, i	r, i, z	r, i, n816	i, z, n921	i, z, y
offset
scatter

Wide

XMM-LSS

△top

	g, r, i	i, z, y	r, i, z
offset
scatter

GAMA09H

△top

	g, r, i	r, i, z	i, z, y
offset
scatter

WIDE12H

△top

	r, i, z	i, z, y	g, r, i
offset
scatter

GAMA15H

△top

	i, z, y	g, r, i	r, i, z
offset
scatter

HECTOMAP

△top

	i, z, y	r, i, z	g, r, i
offset
scatter

VVDS

△top

	g, r, i	r, i, z	i, z, y
offset
scatter

AEGIS

△top

	i, z, y	r, i, z	g, r, i
offset
scatter