QA for run 4233 (rerun 40, strip 39S), fields: 18-42

The Estimates of Photometric Zeropoint Errors:

Zeropoint corrections to flatten background

	Zeropoint Corrections to Flatten Background
band:	u	g	r	i	z
Col. 1	0.006	0.010	-0.003	-0.015	-0.010
Col. 2	-0.001	0.012	0.030*	0.018	0.015
Col. 3	-0.006	-0.002	0.021*	0.003	0.015
Col. 4	-0.001	-0.003	-0.008	-0.004	-0.001
Col. 5	-0.017	0.002	0.007	0.012	0.009
Col. 6	-0.032*	-0.018	-0.010	-0.013	-0.021

*Red entries are triggered by abs(entry) > (0.02 0.02 0.02 0.02 0.03) in (u g r i z)
The table above lists the photometric zeropoint corrections
required for a flat background across all camera columns.

Zeropoint corrections from principal colors

	Zeropoint Corrections to Fix Principal Colors
band:	u	g	r	i	z
Col. 1	0.006	-0.019	0.008	0.011	0.015
Col. 2	0.028*	0.001	-0.001	0.000	0.007
Col. 3	0.006	-0.004	-0.007	0.011	0.024
Col. 4	0.023*	-0.010	0.003	0.006	0.023
Col. 5	0.045*	-0.004	0.003	0.001	0.024
Col. 6	0.025*	-0.006	-0.002	0.007	0.028

*Red entries are triggered by abs(entry) > (0.02 0.02 0.02 0.02 0.03) in (u g r i z)
The table above lists the photometric zeropoint corrections
required to make the median principal colors (for all fields in
a camera column) to be 0 (assuming that errors in gri add up to 0)

	Mean Values for All Columns
QUANTITY	u	g	r	i	z
Sky: RMS	0.000	0.000	0.000	0.000	0.000
Sky: Max Dev	0.006	0.001	0.002	0.006	0.003
m(apert7)-m(psf): Max Dev	0.090	0.027	0.017	0.026	0.038
m(apert7)-m(psf): Med Off	0.015*	0.005	0.004	0.010	0.015*
m(apert7)-m(psf): RMS	0.010	0.005	0.005	0.006	0.009
m(mod)-m(psf): Max Dev	0.036	0.016	0.019	0.016	0.010
m(mod)-m(psf): Med Off	0.005	0.005	0.002	0.004	0.004
m(mod)-m(psf): RMS	0.005	0.004	0.004	0.003	0.002

Click here for expanded tables with links to plots.

Relative Astrometry, mean values for 6 columns: