SVA1 Data Analysis » History » Version 68
SVA1 Data Analysis¶
This wiki page will record information gleaned from the biweekly Monday SVA1 Analysis telecon. In the end, this will build up a compilation of best-practices and systematics for different magnitudes; star/galaxy separation; photometric zeropoints; masking; etc.
1. Dial Toll-Free Number: 866-740-1260 (U.S. & Canada)
2. International participants dial:
Toll Number: 303-248-0285
Or International Toll-Free Number: http://www.readytalk.com/intl
UK: 0800 496 0576
3. Enter your 7-digit access code, followed by “#”
Your access code: 7691719
Agenda And Minutes for 10/14, 10am CDT
Agenda And Minutes for 10/28, 10am CDT
Agenda And Minutes for 11/11, 10am CST
Agenda And Minutes for 11/25, 10am CST
Agenda And Minutes for 12/09, 10am CST
Agenda And Minutes for 12/18, 10am CST
Agenda And Minutes for 1/22, 10am CST
Agenda And Minutes for 2/3, 10am CST
Agenda And Minutes for 3/3, 10am CST
Agenda And Minutes for 3/17, 10am CDT
Agenda And Minutes for 3/31, 10am CDT
Agenda And Minutes for 4/14, 10am CDT
Agenda And Minutes for 4/28, 10am CDT
Agenda And Minutes for 5/12, 10am CDT
Agenda And Minutes for 6/9, 10am CDT
Agenda And Minutes for 6/23, 10am CDT
Agenda And Minutes for 7/21, 10am CDT
Agenda And Minutes for 8/4, 10am CDT
Gold Catalog v1.0¶
The SVA1 Gold Catalog v1.0 is described here.
DETMODEL for colors...
On this page, you can find some results of tests on the COSMOS field, including star/galaxy separation.
Some studies on star/galaxy separation for final cut and coadd objects in the SN fields S/G SVA1 SN fields
Some interesting spread model maps are at Spread Model Maps
and A Modest Proposal for Preliminary Star/Galaxy Separation (Eli)
with Bright Galaxy Impurity
and Bright Star Spread Model Issues.
and Tile dependence of star-galaxy classification
and Tile dependence of PSF in the SN Field Coadds
On this page, you can find the links to Mangle info.
SN Field Re-Coadds¶
Cosmic ray rejection from catalogues¶
I might be useful to have the peak intensity value at xpeak, ypeak [Richard McMahon]
Coadd catalogue objects provenance¶
Coadd catalogue provenance link to input catalogue files. It would be useful to have the source id from
the input catalog files
TTYPE1 = 'NUMBER ' / Running object number
This would allow joins between COADD_OBJECTS and OBJECTS_CURRENT and allow end-to-end checks.
OBJECTS_CURRENT has columns called:
Coadd catalogue objects deblending information¶
It would be useful to know which objects are members of a blend so that one can
determine the magnitude difference and pairwise separattions so that the effect of
blending can be estimated.
Other DESDM COADD catalogues oddities¶
There are columns without the waveband identified
Image shape parameters
TTYPE8 = 'A_IMAGE '
TTYPE8 = 'B_IMAGE '
but we have THETA_IMAGE_[GRIZY] but not A_IMAGE, B_IMAGE
Ellipticity seem to be missing.
flux_psf values are in object catalogues but not in the coadd table
Regions of Bad Photometry
Bad Photometry Maps
An Ugly Image
On the Bias Jumps
Some tests on depth with Mangle Mask
Tile dependence of star-galaxy classification
Tile dependence of PSF in the SN Field Coadds
Column documentation at DESDM users group wiki page: