srclist overlap message for exposure 2 of trigger 851829
uvot_overlap.pl vrs. 2010-12-20b fem started at 180805d12h11m10s065806usUT
The observation of trigger 851829 started 2018-08-05T09:10:12.3
Examining file ./851829_g322_uvot_sky_srclist.fits
The exposure ID is 555153012
The exposure time is undefined.
The filter is U.
The uvot region is centered at (167.5245,-45.3271) with a roll angle of 326.9
It is square with sides of 12.05 arc min. for an area of 145.15 sq arc min
The BAT error circle is centered at (167.5300,-45.3310) with a radius of 3.000 arc min
This is 0.327 arc min from the center of the uvot region
The area of the BAT error circle is 28.27 sq. arc min
The UVOT/BAT overlap is 28.27 sq. arc min or 1.00 of the BAT error circle
The XRT error circle is centered at (167.5662,-45.3322) with a radius of 0.042 arc min
This is 1.786 arc min from the center of the uvot region
The area of the XRT error circle is 0.005 sq. arc min
The UVOT/XRT overlap is 0.005 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 2 of trigger 851829
find_uvot_ag.pl vrs. 2017-02-17 fem started at 180805d12h11m18s126955usUT
Observation start time is 2018-08-05T09:10:12.3
Examining file ./851829_g322_uvot_catalog_srclist.fits
The exposure ID is 555153012
The exposure is 249.935 sec.
The bin size is 2 pixels
The filter is U
There are 161 detected source(s) for 851829_g322
Aspect correction adds 0.00019 degrees (0.046 sec of time = 0.48 arc sec) to RA
Aspect correction adds 0.00007 degrees ( 0.25 arcsec) to Dec
Total aspect correction is 0.54 arcsec
Star catalogs centered at 167.5237 , -45.3269 with radius 9.16 arc min.
n_usno: 2166 n_gsc: 0
*** WARNING -- bright star catalog has 7 entries brighter than 12 mag
The brightest has mag 10.63328
RA DEC Mag Color
bright star 0: 167.55999 (11:10:14.40) -45.36704 (-45:22:01.4) 10.76 USNO-V
bright star 1: 167.42491 (11:09:41.98) -45.30133 (-45:18:04.8) 11.99 USNO-V
bright star 2: 167.62942 (11:10:31.06) -45.31597 (-45:18:57.5) 11.94 USNO-V
bright star 3: 167.53437 (11:10:08.25) -45.24901 (-45:14:56.5) 11.97 USNO-V
bright star 4: 167.50387 (11:10:00.93) -45.43004 (-45:25:48.1) 10.63 USNO-V
bright star 5: 167.50509 (11:10:01.22) -45.43046 (-45:25:49.6) 10.73 USNO-B
bright star 6: 167.37354 (11:09:29.65) -45.39642 (-45:23:47.1) 11.83 USNO-V
Mean distance difference (CAT_DELTA) for 153 matched entries is 0.685" for 851829_g322
Mean and std. dev of mag. difference (MAG_DELTA) are 1.468 and 0.687 for 851829_g322
Found 10 entries without IDs and 1 entries that are acceptable afterglow candidates for 851829_g322.
Acceptable entries have no ID, XRT distances < 6.25", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
2 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=167.5300 (11:10:07.20) DEC=-45.3310 (-45:19:51.6)
XRT distances are from RA=167.5662 (11:10:15.90) DEC=-45.3322 (-45:19:56.0)
-----------------
Entry 15 in the list of sources is a candidate afterglow for 851829_g322 with 3x3 stamp
ra=167.58473 (11:10:20.34) dec=-45.31029 (-45:18:37.1) +/- 1.1" mag=16.52+/-0.35
dist=91.8 REFID=36
*** The position of this source is inconsistent with the XRT position.
The position is 157.3 arc sec from the BAT position.
src: 15 distr. of nearby unmatched sources: 1 0 0 0 0
Found 4 entries in star catalog(s) within 20.0" of the candidate.
printing all entries
(Entries within 2 arc sec of a source list entry are considered a match)
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
167.5797 -45.3141 18.7 -1 USNO-B1 17.61 16.73 17.12
167.5817 -45.3093 8.5 -1 USNO-B1 99.99 20.15 99.99
167.5853 -45.3099 2.1 -1 USNO-B1 14.58 13.96 14.24 *
167.5841 -45.3067 13.2 -1 USNO-B1 18.48 17.11 17.72
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
Found 2 entries in star catalog(s) within 10" of the XRT position.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
167.5655 -45.3321 2.0 -1 USNO-B1 21.21 20.73 20.94
167.5694 -45.3317 8.2 -1 USNO-B1 20.72 19.11 19.82
The closest star is 1.96" away.
List UVOT sources within 10" of the XRT position:
There are no candidates inside BAT error circle, but outside XRT error circle.
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 18.12, XRT distances < 6.25",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
srclist paragraph message for exposure 2 of trigger 851829
IMAGE PROBLEM: no overlap
------ Start for Possible Stand-alone Circular ----
In response to GRB180805 (Swift/BAT trigger 851829) at 09:04:49 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
301 seconds after the BAT trigger. No credible afterglow candidate has been
found in the initial data products. The 2.7'x2.7' sub-image covers none of the
XRT error circle. The 8'x8' region for the list of sources generated on-board
covers 100% of the XRT error circle. The list of sources is typically complete
to about 18.0 mag. No correction has been made for the expected extinction
corresponding to E(B-V) of 0.19.
------- notes for trigger 851829 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 180805d12h11m21s396219usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=851829
-expid=555153012 -meonly -msg_srclist
Results from standard processing of UVOT TDRSS data for this trigger should be
available at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/851829/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
XRT position found for srclist. XRT position found for Genie image. BAT
position found.
UVOT exposure began at MET 555153012.31224 or about 2018:217:09:10:07 UT
Found 2162 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 17% of the srclist region. Found 161 sources in
srclist catalog. Found 10 srclist source(s) without IDs. There are 0 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
18.12 mag.
Found 11 source(s) in Genie image catalog. Found 0 Genie image source(s)
without IDs. There are 0 good candidate(s) in the Genie image catalog. Good
candidates must be brighter than 19.85 mag. Found 143 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
16% of the Genie image region.
Genie image analysis:
Found 52855.5 counts in the large background region of 6093.0 pixels or a rate
of 8.675 counts/pixel in a radius of 45.0 arcsec. Based on this background, the
typical 5-sigma UL at a random point in the Genie image is 19.33 mag. for a
4-arcsec aperture. The closest srclist source has ra= 167.5661 dec= -45.3223
mag=18.12 sep=35.76". The closest Genie source has ra= 167.5454 dec= -45.3328
mag=17.74 sep=52.91".
All AG candidates sorted by magnitude for the current finding chart.
(U/V/White SRCLIST mags < 17.5/17.5/18.5 are reliable. Mag > 18.5/18.5/19.5 are
not. Others are uncertain.)
(U/V/White Genie image mags < 18.0/18.0/19.0 are reliable. Mag > 19.0/19.0/20.0
are not. Others are uncertain.)
(Magnitudes followed by * have been corrected for exposure.)
---MET--- -dt- filter ---RA-- ---DEC--- -MAG/Limit Dist(") Source Asp.Corr?
555153012 301 U srclist found no candidates.
555153012 301 U image found no candidates.
List afterglow candidates for other finding charts.
555152800 89 WHITE srclist found no candidates.
555152800 89 WHITE image found no candidates.
555153590 879 WHITE srclist found no candidates.
555153590 879 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: SRCLIST
FILTER: u
GRB_DEC: -45.33222
GRB_ERROR: 6.25
GRB_RA: 167.56625
IMAGE_START_TIME: 09:10:07
MAGNITUDE: 18.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT