srclist overlap message for exposure 1 of trigger 1142847
uvot_overlap.pl vrs. 2010-12-20b fem started at 221201d20h11m24s378572usUT
The observation of trigger 1142847 started 2022-12-01T12:28:35.1
Examining file ./1142847_g209_uvot_sky_srclist.fits
The exposure ID is 691590515
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (266.9301,-68.2526) with a roll angle of 335.6
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 (266.9330,-68.2600) with a radius of 3.000 arc min
This is 0.450 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 (266.9246,-68.2488) with a radius of 0.035 arc min
This is 0.256 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 1142847
find_uvot_ag.pl vrs. 2020-10-30 fem started at 221201d20h11m25s947579usUT
Observation start time is 2022-12-01T12:28:35.1
Examining file ./1142847_g209_uvot_catalog_srclist.fits
The exposure ID is 691590515
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 172 detected source(s) for 1142847_g209
Aspect correction adds 0.00021 degrees (0.051 sec of time = 0.28 arc sec) to RA
Aspect correction adds 0.00076 degrees ( 2.73 arcsec) to Dec
Total aspect correction is 2.75 arcsec
Star catalogs centered at 266.9255 , -68.2533 with radius 6.05 arc min.
n_usno: 1382 n_gsc: 0
*** WARNING -- bright star catalog has 3 entries brighter than 12 mag
The brightest has mag 9.56292
RA DEC Mag Color
bright star 0: 266.73498 (17:46:56.39) -68.28181 (-68:16:54.5) 11.67 USNO-V
bright star 1: 266.70987 (17:46:50.37) -68.22090 (-68:13:15.2) 11.17 USNO-V
bright star 2: 266.93283 (17:47:43.88) -68.34632 (-68:20:46.7) 9.56 USNO-V
Mean distance difference (CAT_DELTA) for 173 matched entries is 0.818" for 1142847_g209
Mean and std. dev of mag. difference (MAG_DELTA) are 1.565 and 0.544 for 1142847_g209
Found 8 entries without IDs and 3 entries that are acceptable afterglow candidates for 1142847_g209.
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.
3 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=266.9330 (17:47:43.92) DEC=-68.2600 (-68:15:36.0)
XRT distances are from RA=266.9246 (17:47:41.91) DEC=-68.2488 (-68:14:55.8)
-----------------
Entry 18 in the list of sources is a candidate afterglow for 1142847_g209 with 1x1 stamp
ra=266.84863 (17:47:23.67) dec=-68.25145 (-68:15:05.2) +/- 1.1" mag=18.98+/-0.35
dist=101.8 REFID=170
*** The position of this source is inconsistent with the XRT position.
The position is 116.6 arc sec from the BAT position.
src: 18 srclist_match has ID
src: 18 distr. of nearby unmatched sources: 0 0 0 0 0
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
266.8496 -68.2525 3.9 -1 USNO-B1 14.86 13.48 14.09 *
266.8478 -68.2517 1.4 -1 USNO-B1 20.85 16.13 18.23 *
266.8436 -68.2495 9.7 -1 USNO-B1 20.25 19.84 20.02
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 27 in the list of sources is a candidate afterglow for 1142847_g209 with 1x1 stamp
ra=266.97041 (17:47:52.90) dec=-68.22747 (-68:13:38.9) +/- 1.1" mag=18.98+/-0.35
dist=98.3 REFID=154
*** The position of this source is inconsistent with the XRT position.
The position is 127.3 arc sec from the BAT position.
src: 27 distr. of nearby unmatched sources: 0 0 0 0 0
Found 2 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
266.9667 -68.2274 5.0 -1 USNO-B1 14.50 13.36 13.87
266.9660 -68.2264 7.1 -1 USNO-B1 99.99 19.77 99.99
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 57 in the list of sources is a candidate afterglow for 1142847_g209 with 3x3 stamp
ra=266.83145 (17:47:19.55) dec=-68.27873 (-68:16:43.4) +/- 1.1" mag=14.74+/-0.35
dist=164.3 REFID=2
*** The position of this source is inconsistent with the XRT position.
The position is 151.2 arc sec from the BAT position.
src: 57 distr. of nearby unmatched sources: 1 1 1 0 0
Found 9 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
266.8400 -68.2760 14.9 -1 USNO-B1 19.91 18.43 19.09
266.8378 -68.2784 8.6 -1 USNO-B1 20.21 19.94 20.06
266.8321 -68.2762 9.2 -1 USNO-B1 17.78 16.34 16.98
266.8318 -68.2765 8.0 -1 USNO-B1 99.99 15.34 99.99
266.8304 -68.2783 2.1 -1 USNO-B1 12.83 12.34 12.56 *
266.8299 -68.2794 3.3 -1 USNO-B1 17.53 12.25 14.59 *
266.8354 -68.2834 17.7 -1 USNO-B1 19.72 18.00 18.76
266.8349 -68.2836 18.3 -1 USNO-B1 18.63 17.61 18.06
266.8265 -68.2812 11.1 -1 USNO-B1 18.76 17.40 18.00
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 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 1 of trigger 1142847
IMAGE PROBLEM: no overlap
------ Start for Possible Stand-alone Circular ----
In response to GRB221201 (Swift/BAT trigger 1142847) at 12:25:05 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 179 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 mag. No correction has been made for the expected
extinction corresponding to E(B-V) of 0.066.
------- notes for trigger 1142847 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 221201d20h11m38s955538usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1142847
-expid=691590515 -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/1142847/
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 691590515.06736 or about 2022:335:12:28:30 UT
Found 1378 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 26% of the srclist region. Found 172 sources in
srclist catalog. Found 8 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 3 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 20.23 mag. Found 268 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 25% of the
Genie image region. The Genie image is INCOMPLETE with 19141 null pixels.
Genie image analysis:
Found 3303.9 counts in the large background region of 150.0 pixels or a rate of
22.026 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 19.50 mag. for a
4-arcsec aperture. The closest srclist source has ra= 266.9173 dec= -68.2470
mag=18.69 sep=11.74". The closest Genie source has ra= 266.8859 dec= -68.2632
mag=19.99 sep=73.24".
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?
691590515 179 WHITE srclist found no candidates.
691590515 179 WHITE image found no candidates.
List afterglow candidates for other finding charts.
691590673 337 ? srclist data are not available.
691590673 337 U image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: SRCLIST
FILTER: white
GRB_DEC: -68.24883
GRB_ERROR: 5.25
GRB_RA: 266.92462
IMAGE_START_TIME: 12:28:30
MAGNITUDE: 18.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT