PSP QA for run 2126, rerun 0

QA produced on Fri Feb 23 13:01:32 CST 2001 with photo version v5_2_14

	Field Quality (nFields=431)
quality	nOK	nHOLE	% HOLE
union	422	9	2.1
col. 1	431	0	0.0
col. 2	430	1	0.2
col. 3	427	4	0.9
col. 4	429	2	0.5
col. 5	431	0	0.0
col. 6	428	3	0.7

PSP status plot

PSF width (FWHM arcsec) statistics for column 6, filter r:
Mean PSF width = 1.54
Median = 1.49, min = 1.31, max = 2.02
There are 0 fields ( 0.0%) with PSFwidth > 4.0 arcsec
This run is 431 fields long.
PSF width plot for all 30 chips
PSF width derivative plot for all 30 chips

	Mean PSP status (0=OK)
band	u	g	r	i	z
col. 1	0.01	0.00	0.00	0.00	0.00
col. 2	0.02	0.00	0.00	0.00	0.00
col. 3	0.07	0.00	0.00	0.00	0.00
col. 4	0.01	0.00	0.00	0.00	0.00
col. 5	0.01	0.00	0.00	0.00	0.00
col. 6	0.01	0.00	0.00	0.00	0.00

PSP status plot

	Mean N stars for estimating PSF
band	u	g	r	i	z
col. 1	51.3	62.5	60.4	59.6	65.5
col. 2	50.4	65.3	63.5	62.0	67.8
col. 3	35.6	64.9	62.2	60.5	66.1
col. 4	53.1	65.5	63.7	58.7	66.6
col. 5	51.0	63.8	58.4	62.8	66.0
col. 6	46.8	65.4	61.4	58.9	65.9

Number of stars used for estimating PSF

	Mean m(psf)-m(aperture) Error (mag)
band	u	g	r	i	z
col. 1	0.02	0.01	0.01	0.02	0.02
col. 2	0.01	0.01	0.02	0.02	0.02
col. 3	0.01	0.01	0.01	0.02	0.02
col. 4	0.02	0.01	0.01	0.01	0.02
col. 5	0.02	0.02	0.01	0.02	0.01
col. 6	0.02	0.02	0.02	0.02	0.02

Aperture Correction Scatter plot
Aperture Correction Bias plot
Wing Aperture Correction plot
Power-law index for the outer PSF
Kolmogoroff exponents

*Averaged over 6 columns

	Sky brightness* (mag/arsec2)
band	u	g	r	i	z
mean	22.25	21.90	21.05	20.55	19.45
max	22.32	21.95	21.12	20.66	19.62
min	22.19	21.84	20.97	20.44	19.29

Sky brightness (in counts) plot
Sky brightness (in mag/arcsec2) plot
Sky derivative plot
Sky colors plot

	Mean Sky Column offsets
band	u	g	r	i	z
col. 1	-0.03	-0.00	0.00	0.01	-0.01
col. 2	-0.00	0.03	0.02	0.01	-0.04
col. 3	0.01	0.01	-0.02	0.00	-0.00
col. 4	0.04	-0.02	-0.01	-0.01	-0.01
col. 5	0.00	0.00	0.01	0.02	0.03
col. 6	-0.02	-0.02	-0.00	-0.02	0.03

	Gains (from sky quartiles)
band	u	g	r	i	z
col. 1	1.06	0.97	1.03	0.86	0.95
col. 2	1.38	0.99	0.96	0.94	0.88
col. 3	1.11	0.95	1.05	0.88	0.93
col. 4	1.24	0.96	0.89	0.92	0.78
col. 5	1.10	0.92	1.10	1.07	0.95
col. 6	1.15	0.98	0.94	0.90	0.96

Gain plot
Normalized Gain plot