srclist overlap message for exposure 3 of trigger 1205319
uvot_overlap.pl vrs. 2010-12-20b fem started at 231230d12h20m28s116686usUT
The observation of trigger 1205319 started 2023-12-30T01:44:02.5
Examining file ./1205319_g893_uvot_sky_srclist.fits
The exposure ID is 725593442
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (245.2026,58.1131) with a roll angle of 149.3
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 (245.1970,58.1200) with a radius of 3.000 arc min
This is 0.452 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 (245.2144,58.1239) with a radius of 0.035 arc min
This is 0.750 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 3 of trigger 1205319
find_uvot_ag.pl vrs. 2023-04-25a fem started at 231230d12h20m44s385382usUT
Observation start time is 2023-12-30T01:44:02.5
Examining file ./1205319_g893_uvot_catalog_srclist.fits
The exposure ID is 725593442
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 73 detected source(s) for 1205319_g893
Aspect correction adds 0.00024 degrees (0.058 sec of time = 0.46 arc sec) to RA
Aspect correction adds -0.00205 degrees (-7.38 arcsec) to Dec
Total aspect correction is 7.39 arcsec
Star catalogs centered at 245.2067 , 58.1193 with radius 8.27 arc min.
n_usno: 626 n_gsc: 589
*** WARNING -- bright star catalog has 4 entries brighter than 12 mag
The brightest has mag 11.14494
RA DEC Mag Color
bright star 0: 245.36858 (16:21:28.46) 58.04754 (+58:02:51.2) 11.14 USNO-V
bright star 1: 245.40476 (16:21:37.14) 58.07945 (+58:04:46.0) 11.62 USNO-V
bright star 2: 245.43887 (16:21:45.33) 58.08462 (+58:05:04.6) 11.28 USNO-V
bright star 3: 245.40999 (16:21:38.40) 58.07614 (+58:04:34.1) 11.91 GSC-V
Mean distance difference (CAT_DELTA) for 37 matched entries is 0.961" for 1205319_g893
Mean and std. dev of mag. difference (MAG_DELTA) are 2.503 and 0.805 for 1205319_g893
Found 36 entries without IDs and 5 entries that are acceptable afterglow candidates for 1205319_g893.
Acceptable entries have no ID, XRT distances < 5.25", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
9 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=245.1970 (16:20:47.28) DEC=58.1200 (+58:07:12.0)
XRT distances are from RA=245.2144 (16:20:51.45) DEC=58.1239 (+58:07:26.2)
*** WARNING 49 per cent of entries have no IDs.
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1205319_g893 with 3x3 stamp
ra=245.20368 (16:20:48.88) dec=58.10632 (+58:06:22.7) +/- 1.1" mag=19.00+/-0.35
dist=66.6 REFID=53
*** The position of this source is inconsistent with the XRT position.
The position is 50.4 arc sec from the BAT position.
src: 0 distr. of nearby unmatched sources: 0 1 0 0 0
Found 6 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
245.1961 58.1069 14.6 -1 USNO-B1 20.11 18.29 19.10
245.2046 58.1055 3.4 -1 USNO-B1 15.75 14.71 15.17 *
245.1972 58.1036 15.8 -1 USNO-B1 20.75 19.71 20.17
245.1961 58.1069 14.6 -1 GSC2.3 18.08 20.12 19.03
245.2047 58.1053 4.0 -1 GSC2.3 14.64 15.76 14.56
245.1972 58.1036 15.8 -1 GSC2.3 18.88 20.64 19.46
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 2 in the list of sources is a candidate afterglow for 1205319_g893 with 3x3 stamp
ra=245.20252 (16:20:48.60) dec=58.10481 (+58:06:17.3) +/- 1.1" mag=18.76+/-0.35
dist=72.5 REFID=50
*** The position of this source is inconsistent with the XRT position.
The position is 55.3 arc sec from the BAT position.
src: 2 distr. of nearby unmatched sources: 0 1 0 0 0
Found 6 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
245.1961 58.1069 14.3 -1 USNO-B1 20.11 18.29 19.10
245.2046 58.1055 4.7 -1 USNO-B1 15.75 14.71 15.17
245.1972 58.1036 11.0 -1 USNO-B1 20.75 19.71 20.17
245.1961 58.1069 14.3 -1 GSC2.3 18.08 20.12 19.03
245.2047 58.1053 4.6 -1 GSC2.3 14.64 15.76 14.56
245.1972 58.1036 11.1 -1 GSC2.3 18.88 20.64 19.46
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 3 in the list of sources is a candidate afterglow for 1205319_g893 with 3x3 stamp
ra=245.18967 (16:20:45.52) dec=58.13932 (+58:08:21.5) +/- 1.1" mag=19.44+/-0.35
dist=72.6 REFID=70
*** The position of this source is inconsistent with the XRT position.
The position is 71.3 arc sec from the BAT position.
src: 3 distr. of nearby unmatched sources: 0 0 0 0 0
Found 3 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
245.1896 58.1355 13.7 -1 USNO-B1 21.15 20.54 20.81
245.1896 58.1356 13.4 -1 GSC2.3 20.41 21.58 99.99
245.1866 58.1368 10.8 -1 GSC2.3 20.24 99.99 99.99
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 8 in the list of sources is a candidate afterglow for 1205319_g893 with 3x3 stamp
ra=245.13252 (16:20:31.80) dec=58.09507 (+58:05:42.3) +/- 1.1" mag=18.99+/-0.35
dist=187.2 REFID=43
*** The position of this source is inconsistent with the XRT position.
The position is 153.5 arc sec from the BAT position.
src: 8 distr. of nearby unmatched sources: 1 0 0 0 0
Found 3 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
245.1337 58.0964 5.3 -1 USNO-B1 99.99 20.09 99.99
245.1335 58.0947 2.2 -1 USNO-B1 17.49 15.43 16.34 *
245.1335 58.0947 2.4 -1 GSC2.3 15.47 17.71 15.77 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 11 in the list of sources is a candidate afterglow for 1205319_g893 with 3x3 stamp
ra=245.27668 (16:21:06.40) dec=58.14662 (+58:08:47.8) +/- 1.1" mag=19.46+/-0.35
dist=143.8 REFID=71
*** The position of this source is inconsistent with the XRT position.
The position is 177.6 arc sec from the BAT position.
src: 11 distr. of nearby unmatched sources: 0 0 0 0 0
Found 4 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
245.2795 58.1436 12.1 -1 USNO-B1 20.90 20.45 20.65
245.2778 58.1456 4.2 -1 USNO-B1 16.50 15.16 15.76
245.2798 58.1435 12.8 -1 GSC2.3 19.95 99.99 99.99
245.2777 58.1456 4.2 -1 GSC2.3 15.15 16.65 14.94
*** If XRT position is correct, then this is NOT the afterglow
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 19.22, XRT distances < 5.25",
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 3 of trigger 1205319
------ Start for Possible Stand-alone Circular ----
In response to GRB231230 (Swift/BAT trigger 1205319) at 01:29:08 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 861 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
0.015.
------- notes for trigger 1205319 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 231230d12h20m46s804120usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1205319
-expid=725593442 -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/1205319/
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 725593442.46976 or about 2023:364:01:43:57 UT
Found 622 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 6% of the srclist region. Found 73 sources in
srclist catalog. Found 36 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 8 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 20.10 mag. Found 70 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 7% of the
Genie image region.
Genie image analysis:
Found 173507.9 counts in the large background region of 6197.0 pixels or a rate
of 27.999 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 19.37 mag. for a
4-arcsec aperture.
Found 5671.4 counts in the XRT position region of 200.0 pixels or a rate of
28.357 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 0.375 +/- 0.540 (1-sigma) cps or
20.67 mag and a range from 19.70 to 99.99 mag. The 3-sigma UL at the XRT
position is 1.996 cps or 18.85 mag. The closest srclist source has ra= 245.2321
dec= 58.1386 mag=18.75 sep=62.70". The closest Genie source has ra= 245.2383
dec= 58.1309 mag=20.37 sep=52.06".
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?
725593442 860 WHITE srclist found no candidates.
725593442 860 WHITE image found no candidates.
List afterglow candidates for other finding charts.
725592726 144 WHITE srclist found no candidates.
725592726 144 WHITE image found no candidates.
725592885 303 ? srclist data are not available.
725592885 303 U image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 58.12394
GRB_ERROR: 5.25
GRB_RA: 245.21437
IMAGE_START_TIME: 01:43:57
MAGNITUDE: 18.9
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT