srclist overlap message for exposure 1 of trigger 1202386
uvot_overlap.pl vrs. 2010-12-20b fem started at 231215d00h54m51s916393usUT
The observation of trigger 1202386 started 2023-12-14T20:32:23.2
Examining file ./1202386_g474_uvot_sky_srclist.fits
The exposure ID is 724278743
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (305.7138,-72.4343) with a roll angle of 308.8
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 (305.7360,-72.4360) with a radius of 3.000 arc min
This is 0.414 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 (305.6853,-72.4328) with a radius of 0.037 arc min
This is 0.525 arc min from the center of the uvot region
The area of the XRT error circle is 0.004 sq. arc min
The UVOT/XRT overlap is 0.004 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 1 of trigger 1202386
find_uvot_ag.pl vrs. 2023-04-25a fem started at 231215d00h54m54s467138usUT
Observation start time is 2023-12-14T20:32:23.2
Examining file ./1202386_g474_uvot_catalog_srclist.fits
The exposure ID is 724278743
The exposure is 38.817 sec.
The bin size is 2 pixels
The filter is WHITE
There are 43 detected source(s) for 1202386_g474
Aspect correction adds -0.00738 degrees (-1.772 sec of time = -8.00 arc sec) to RA
Aspect correction adds 0.00051 degrees ( 1.83 arcsec) to Dec
Total aspect correction is 8.21 arcsec
Star catalogs centered at 305.6830 , -72.4320 with radius 5.79 arc min.
n_usno: 685 n_gsc: 470
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 11.9264
RA DEC Mag Color
bright star 0: 305.87234 (20:23:29.36) -72.42761 (-72:25:39.4) 11.93 GSC-F
Mean distance difference (CAT_DELTA) for 44 matched entries is 0.803" for 1202386_g474
Mean and std. dev of mag. difference (MAG_DELTA) are 2.897 and 0.605 for 1202386_g474
Found 2 entries without IDs and 2 entries that are acceptable afterglow candidates for 1202386_g474.
Acceptable entries have no ID, XRT distances < 5.5", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
0 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=305.7360 (20:22:56.64) DEC=-72.4360 (-72:26:09.6)
XRT distances are from RA=305.6853 (20:22:44.47) DEC=-72.4328 (-72:25:58.2)
-----------------
Entry 10 in the list of sources is a candidate afterglow for 1202386_g474 with 5x5 stamp
ra=305.84733 (20:23:23.36) dec=-72.43390 (-72:26:02.1) +/- 1.1" mag=21.43+/-0.35
dist=176.1 REFID=43
*** The position of this source is inconsistent with the XRT position.
The position is 121.2 arc sec from the BAT position.
src: 10 distr. of nearby unmatched sources: 0 1 1 0 1
Found 3 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
305.8553 -72.4302 16.0 -1 USNO-B1 14.14 19.39 17.06
305.8577 -72.4310 15.5 -1 USNO-B1 99.99 19.49 99.99
305.8370 -72.4343 11.3 -1 GSC2.3 99.99 21.97 99.99
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 18 in the list of sources is a candidate afterglow for 1202386_g474 with 5x5 stamp
ra=305.69856 (20:22:47.65) dec=-72.39104 (-72:23:27.7) +/- 1.1" mag=21.14+/-0.35
dist=151.1 REFID=39
*** The position of this source is inconsistent with the XRT position.
The position is 166.9 arc sec from the BAT position.
src: 18 distr. of nearby unmatched sources: 0 0 0 0 0
Found 5 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
305.7030 -72.3945 13.5 -1 USNO-B1 99.99 15.92 99.99
305.7044 -72.3942 13.0 -1 USNO-B1 16.95 16.01 16.43
305.6972 -72.3905 2.6 -1 USNO-B1 15.11 13.96 14.47 *
305.7044 -72.3941 12.8 -1 GSC2.3 15.95 17.01 99.99
305.6972 -72.3904 2.7 -1 GSC2.3 13.42 15.04 99.99 *
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:
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 18.49, XRT distances < 5.5",
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 1202386
------ Start for Possible Stand-alone Circular ----
In response to GRB231214 (Swift/BAT trigger 1202386) at 20:24:28 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 39 seconds with the White filter
starting 442 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
0.060.
------- notes for trigger 1202386 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 231215d00h54m57s553925usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1202386
-expid=724278743 -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/1202386/
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 724278743.17682 or about 2023:348:20:32:18 UT
Found 681 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 14% of the srclist region. Found 43 sources in
srclist catalog. Found 2 srclist source(s) without IDs. There are 0 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
18.49 mag.
Found 15 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 19.92 mag. Found 150 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
13% of the Genie image region.
Genie image analysis:
Found 15627.2 counts in the large background region of 5978.0 pixels or a rate
of 2.614 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 19.19 mag. for a
4-arcsec aperture.
Found 520.6 counts in the XRT position region of 200.0 pixels or a rate of
2.603 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is -0.251 +/- 0.634 (1-sigma) cps. The
3-sigma UL at the XRT position is 1.903 cps or 18.91 mag. The closest srclist
source has ra= 305.6879 dec= -72.4389 mag=19.32 sep=22.10". The closest Genie
source has ra= 305.6872 dec= -72.4389 mag=16.80 sep=22.06".
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?
724278743 442 WHITE srclist found no candidates.
724278743 442 WHITE image found no candidates.
List afterglow candidates for other finding charts.
724282263 3962 WHITE srclist found no candidates.
724282263 3962 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: -72.43283
GRB_ERROR: 5.5
GRB_RA: 305.68529
IMAGE_START_TIME: 20:32:18
MAGNITUDE: 18.9
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT