Dupsrc Analysis V3 Processing
NOTE: Analysis is IN PROGRESS
Results of the duplicate source resolution processing using the
test scans that cover the South1 and Equator1 fields are presented in this document.
Information regarding the catalog generation test fields is located at:
Catalog testfields
A discussion of the duplicate source resolution process is at:
Multiple Source Resolution
The selection process does eliminate some confusion aritifacts, diffraction spike artifacts, and all glints and persistence artifacts.
Duplicate source selection was run prior to DB_MAPCOR processing, therefore some confusion and diffraction artifacts remain in the data.
Additional checking was done to only include apparitions of good quality.
Apparitions were included if:
- Purge flag is zero in all bands
- No saturated pixels, number of frames with bad pixels <= 2
- psf chi is < 3.0 in all bands
- band merge confusion flag must have 1 for each bit
Average delta mags[J,H,K], delta RA(arcsec) and
delta dec(arcsec) were computed for each overlap scan pair.
Histograms of these averages were made.
Two populations are shown
on each histogram.
The BLACK histogram contains all averages regardless of
number of matches in a paricular overlap pair.
The RED histogram
reflects only the averages that had more than 10 matches in a particular overlap pair
for the SNR>20 histograms and
more than 100 matches in a particular overlap pair for the historgram with no SNR cut.
The number of matchs in a particular overlap pair is a function of source density and overlap coverage. Scans that overlap in RA will have a higher number of matches than scans overlapping in DEC. Also, the very low match counts are probably due to overlaps at the scan corners.
The histogram mean and standard deviation were computed and printed on each plot. The first value refers to the black histogram while the second refers to the red histogram.
SNR>20 histograms:
- Delta Magnitude J Band
- Delta Magnitude H Band
- Delta Magnitude K Band
- Delta RA(arcsec)
- Delta DEC(arcsec)
- Delta Magnitude J Band
- Delta Magnitude H Band
- Delta Magnitude K Band
- Delta RA(arcsec)
- Delta DEC(arcsec)
Comments and feedback: Sherry Wheelock