srclist overlap message for exposure 3 of trigger 932608
uvot_overlap.pl vrs. 2010-12-20b fem started at 191101d00h29m02s944920usUT
The observation of trigger 932608 started 2019-10-31T21:38:14.7
Examining file ./932608_g882_uvot_sky_srclist.fits
The exposure ID is 594250694
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (283.2697,47.6340) with a roll angle of 243.8
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 (283.2750,47.6390) with a radius of 3.000 arc min
This is 0.369 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 (283.2895,47.6441) with a radius of 0.032 arc min
This is 1.003 arc min from the center of the uvot region
The area of the XRT error circle is 0.003 sq. arc min
The UVOT/XRT overlap is 0.003 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 3 of trigger 932608
find_uvot_ag.pl vrs. 2017-02-17 fem started at 191101d00h29m21s149957usUT
Observation start time is 2019-10-31T21:38:14.7
Examining file ./932608_g882_uvot_catalog_srclist.fits
The exposure ID is 594250694
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 190 detected source(s) for 932608_g882
*** WARNING -- the sources have filled the available telemetry buffer (190).
srclist_overlap returned: bat_overlap 1.000
srclist_overlap returned: xrt_overlap 1.000
Dimmest detected source in 932608_g882 has mag 19.43
Aspect correction adds -0.00240 degrees (-0.577 sec of time = -5.83 arc sec) to RA
Aspect correction adds -0.00139 degrees (-5.00 arcsec) to Dec
Total aspect correction is 7.68 arcsec
Star catalogs centered at 283.2718 , 47.6352 with radius 8.78 arc min.
n_usno: 1861 n_gsc: 0
*** WARNING -- bright star catalog has 3 entries brighter than 12 mag
The brightest has mag 10.72646
RA DEC Mag Color
bright star 0: 283.29667 (18:53:11.20) 47.62544 (+47:37:31.6) 11.05 USNO-V
bright star 1: 283.33940 (18:53:21.46) 47.53952 (+47:32:22.3) 10.73 USNO-V
bright star 2: 283.46442 (18:53:51.46) 47.59782 (+47:35:52.1) 11.84 USNO-V
Mean distance difference (CAT_DELTA) for 187 matched entries is 0.676" for 932608_g882
Mean and std. dev of mag. difference (MAG_DELTA) are 1.100 and 0.669 for 932608_g882
Found 16 entries without IDs and 1 entries that are acceptable afterglow candidates for 932608_g882.
Acceptable entries have no ID, XRT distances < 5", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
12 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=283.2750 (18:53:06.00) DEC=47.6390 (+47:38:20.4)
XRT distances are from RA=283.2895 (18:53:09.48) DEC=47.6441 (+47:38:38.6)
-----------------
Entry 27 in the list of sources is a candidate afterglow for 932608_g882 with 1x1 stamp
ra=283.33291 (18:53:19.90) dec=47.65135 (+47:39:04.8) +/- 1.1" mag=19.15+/-0.35
dist=108.5 REFID=190
*** The position of this source is inconsistent with the XRT position.
The position is 147.3 arc sec from the BAT position.
src: 27 distr. of nearby unmatched sources: 0 0 0 0 1
Found 1 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
283.3320 47.6513 2.3 -1 USNO-B1 18.00 16.53 17.18 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
Found 0 entries in star catalog(s) within 10" of the XRT position.
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 19.22, XRT distances < 5",
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 3 of trigger 932608
SRCLIST PROBLEM: srclist filled telemetry buffer
------ Start for Possible Stand-alone Circular ----
In response to GRB191031 (Swift/BAT trigger 932608) at 21:23:31 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 859 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 100% of
the XRT error circle. The typical 3-sigma upper limit has been about 19.6 mag.
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 mag. No
correction has been made for the expected extinction corresponding to E(B-V) of
0.08.
------- notes for trigger 932608 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 191101d00h29m24s925821usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=932608
-expid=594250694 -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/932608/
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 594250694.67886 or about 2019:304:21:38:09 UT
Found 1857 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 16% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 16 srclist
source(s) without IDs. There are 0 good candidate(s) in the srclist catalog.
Good candidates must be brighter than 19.22 mag.
Found 18 source(s) in Genie image catalog. Found 3 Genie image source(s)
without IDs. There are 0 good candidate(s) in the Genie image catalog. Good
candidates must be brighter than 20.91 mag. Found 142 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
15% of the Genie image region.
Genie image analysis:
Found 36165.2 counts in the large background region of 5803.0 pixels or a rate
of 6.232 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 20.36 mag. for a
4-arcsec aperture.
Found 1274.3 counts in the XRT position region of 199.0 pixels or a rate of
6.404 counts/pixel in a radius of 8.0 arcsec. The net count rate (using large
background region) at the XRT position is 0.227 +/- 0.242 (1-sigma) cps or
21.39 mag and a range from 20.60 to 99.99 mag. The 3-sigma UL at the XRT
position is 0.953 cps or 19.83 mag. The number of srclist sources filled the
available telemetry. The weakest source detected was 19.43 mag. The closest
srclist source has ra= 283.2954 dec= 47.6414 mag=17.91 sep=17.14". The closest
Genie source has ra= 283.2954 dec= 47.6415 mag=17.22 sep=17.00".
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?
594250694 859 WHITE srclist found no candidates.
594250694 859 WHITE image found no candidates.
List afterglow candidates for other finding charts.
594249927 92 WHITE srclist found no candidates.
594249927 92 WHITE image found no candidates.
594250140 305 U srclist found no candidates.
594250140 305 U image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 47.64406
GRB_ERROR: 5
GRB_RA: 283.28950
IMAGE_START_TIME: 21:38:09
MAGNITUDE: 19.8
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT