QA for run 3606 (rerun 40, strip 28N), fields: 11-166



The Estimates of Photometric Zeropoint Errors:

Zeropoint corrections to flatten background

Zeropoint Corrections to Flatten Background
band:ugriz
Col. 1 0.023* 0.009 0.017 0.004 0.016
Col. 2 -0.005 -0.006 -0.009 0.001 -0.011
Col. 3 0.006 0.005 0.013 0.006 -0.013
Col. 4 0.023* 0.009 0.003 0.002 0.005
Col. 5 -0.034* -0.028* -0.005 -0.020 -0.030
Col. 6 -0.032* -0.016 -0.002 0.004 0.002

*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:ugriz
Col. 1 0.037* 0.012 -0.005 -0.007 -0.009
Col. 2 0.070* 0.011 0.004 -0.015 -0.028
Col. 3 0.059* 0.018 -0.005 -0.012 0.012
Col. 4 0.042* 0.005 0.000 -0.005 -0.009
Col. 5 0.052* 0.012 -0.013 0.001 0.001
Col. 6 0.033* 0.008 -0.003 -0.006 -0.009

*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)



Summary for Selected Quantities

Mean Values for All Columns
QUANTITY u g r i z
Sky: RMS 0.002 0.002 0.001 0.001 0.002
Sky: Max Dev 0.006 0.008 0.005 0.004 0.006
m(apert7)-m(psf): Max Dev 0.161* 0.059* 0.145* 0.070* 0.067
m(apert7)-m(psf): Med Off 0.012* 0.005 0.004 0.003 0.008
m(apert7)-m(psf): RMS 0.016 0.009 0.008 0.007 0.010
m(mod)-m(psf): Max Dev 0.080 0.057* 0.163* 0.132* 0.208*
m(mod)-m(psf): Med Off 0.004 0.006 0.003 0.003 0.003
m(mod)-m(psf): RMS 0.009 0.008 0.007 0.006 0.007

Click here for expanded tables with links to plots.



Relative Astrometry, mean values for 6 columns:


Row:
Offset= 0.5 mas, Sigma= 23.8 mas, T3= 5.7, Chi=0.594
Column:
Offset= 0.0 mas, Sigma= 20.5 mas, T3= 6.2, Chi=0.568


In addition to the above warnings, there are warnings for individual columns,
please consult the expanded tables by following the link above.
® SDSS QA Dept.