srclist overlap message for exposure 1 of trigger 874475
uvot_overlap.pl vrs. 2010-12-20b fem started at 181203d14h29m05s748990usUT
The observation of trigger 874475 started 2018-12-03T12:10:29.2
Examining file ./874475_g101_uvot_sky_srclist.fits
The exposure ID is 565531829
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (108.3781,-39.7701) with a roll angle of 142.4
It is square with sides of 8.03 arc min. for an area of 64.51 sq arc min
The BAT error circle is centered at (108.3690,-39.7690) with a radius of 3.000 arc min
This is 0.423 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 (108.3486,-39.8019) with a radius of 0.033 arc min
This is 2.341 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 1 of trigger 874475
find_uvot_ag.pl vrs. 2017-02-17 fem started at 181203d14h29m10s515232usUT
Observation start time is 2018-12-03T12:10:29.2
Examining file ./874475_g101_uvot_catalog_srclist.fits
The exposure ID is 565531829
The exposure is 149.846 sec.
The bin size is 2 pixels
The filter is WHITE
There are 190 detected source(s) for 874475_g101
*** 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 874475_g101 has mag 19.46
Aspect correction adds 0.00235 degrees (0.565 sec of time = 6.51 arc sec) to RA
Aspect correction adds 0.00004 degrees ( 0.14 arcsec) to Dec
Total aspect correction is 6.51 arcsec
Star catalogs centered at 108.3673 , -39.7812 with radius 6.72 arc min.
n_usno: 1106 n_gsc: 0
*** WARNING -- bright star catalog has 2 entries brighter than 12 mag
The brightest has mag 10.77432
RA DEC Mag Color
bright star 0: 108.44466 (07:13:46.72) -39.74006 (-39:44:24.2) 11.08 USNO-V
bright star 1: 108.29654 (07:13:11.17) -39.73300 (-39:43:58.8) 10.77 USNO-V
Mean distance difference (CAT_DELTA) for 134 matched entries is 0.794" for 874475_g101
Mean and std. dev of mag. difference (MAG_DELTA) are 1.705 and 0.462 for 874475_g101
Found 62 entries without IDs and 2 entries that are acceptable afterglow candidates for 874475_g101.
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.
51 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=108.3690 (07:13:28.56) DEC=-39.7690 (-39:46:08.4)
XRT distances are from RA=108.3486 (07:13:23.66) DEC=-39.8019 (-39:48:06.7)
*** WARNING 32 per cent of entries have no IDs.
-----------------
Entry 30 in the list of sources is a candidate afterglow for 874475_g101 with 3x3 stamp
ra=108.33366 (07:13:20.08) dec=-39.76968 (-39:46:10.8) +/- 1.1" mag=18.26+/-0.35
dist=123.0 REFID=55
*** The position of this source is inconsistent with the XRT position.
The position is 97.8 arc sec from the BAT position.
src: 30 distr. of nearby unmatched sources: 0 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
108.3333 -39.7692 2.1 -1 USNO-B1 16.79 15.69 16.18 *
108.3327 -39.7689 3.9 -1 USNO-B1 18.25 16.02 17.01 *
108.3339 -39.7645 18.5 -1 USNO-B1 18.94 17.66 18.23
108.3278 -39.7715 17.5 -1 USNO-B1 20.66 18.53 19.48
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 57 in the list of sources is a candidate afterglow for 874475_g101 with 1x1 stamp
ra=108.31864 (07:13:16.47) dec=-39.74739 (-39:44:50.6) +/- 1.1" mag=19.21+/-0.35
dist=212.9 REFID=178
*** The position of this source is inconsistent with the XRT position.
The position is 159.6 arc sec from the BAT position.
src: 57 distr. of nearby unmatched sources: 0 0 0 0 0
Found 1 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
108.3199 -39.7472 3.6 -1 USNO-B1 15.76 14.66 15.15 *
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 1 of trigger 874475
SRCLIST PROBLEM: srclist filled telemetry buffer
------ Start for Possible Stand-alone Circular ----
In response to GRB181203 (Swift/BAT trigger 874475) at 12:08:47 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 79 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
0.24.
------- notes for trigger 874475 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 181203d14h29m17s261635usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=874475
-expid=565531829 -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/874475/
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 565531829.18558 or about 2018:337:12:10:24 UT
Found 1102 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 62 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 25 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 20.63 mag. Found 177 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 61094.5 counts in the large background region of 5856.0 pixels or a rate
of 10.433 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 20.08 mag. for a
4-arcsec aperture.
Found 2029.0 counts in the XRT position region of 199.0 pixels or a rate of
10.196 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is -0.513 +/- 0.326 (1-sigma) cps. The
3-sigma UL at the XRT position is 0.977 cps or 19.80 mag. The number of srclist
sources filled the available telemetry. The weakest source detected was 19.46
mag. The closest srclist source has ra= 108.3568 dec= -39.8070 mag=16.52
sep=29.33". The closest Genie source has ra= 108.3406 dec= -39.7995 mag=20.48
sep=23.66".
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?
565531829 79 WHITE srclist found no candidates.
565531829 79 WHITE image found no candidates.
List afterglow candidates for other finding charts.
565532043 293 U srclist found no candidates.
565532043 293 U image found no candidates.
565532622 872 WHITE srclist found no candidates.
565532622 872 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: -39.80186
GRB_ERROR: 5
GRB_RA: 108.34858
IMAGE_START_TIME: 12:10:24
MAGNITUDE: 19.8
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT