srclist overlap message for exposure 1 of trigger 1281241
uvot_overlap.pl vrs. 2010-12-20b fem started at 250114d12h25m53s525417usUT
The observation of trigger 1281241 started 2025-01-14T07:36:11.0
Examining file ./1281241_g170_uvot_sky_srclist.fits
The exposure ID is 758532970
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (166.5959,-15.1455) with a roll angle of 125.2
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 (166.5900,-15.1430) with a radius of 3.000 arc min
This is 0.373 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 (166.5761,-15.1119) with a radius of 0.040 arc min
This is 2.320 arc min from the center of the uvot region
The area of the XRT error circle is 0.005 sq. arc min
The UVOT/XRT overlap is 0.005 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 1 of trigger 1281241
find_uvot_ag.pl vrs. 2023-04-25a fem started at 250114d12h26m00s192599usUT
Observation start time is 2025-01-14T07:36:11.0
Examining file ./1281241_g170_uvot_catalog_srclist.fits
The exposure ID is 758532970
The exposure is 149.846 sec.
The bin size is 2 pixels
The filter is WHITE
There are 20 detected source(s) for 1281241_g170
Aspect correction adds 0.00014 degrees (0.034 sec of time = 0.49 arc sec) to RA
Aspect correction adds -0.00051 degrees (-1.83 arcsec) to Dec
Total aspect correction is 1.89 arcsec
Star catalogs centered at 166.5911 , -15.1384 with radius 6.05 arc min.
n_usno: 298 n_gsc: 284
*** WARNING -- bright star catalog has 2 entries brighter than 12 mag
The brightest has mag 9.3487
RA DEC Mag Color
bright star 0: 166.69282 (11:06:46.28) -15.12805 (-15:07:41.0) 9.35 USNO-V
bright star 1: 166.64899 (11:06:35.76) -15.06351 (-15:03:48.6) 11.90 GSC-F
Mean distance difference (CAT_DELTA) for 20 matched entries is 0.731" for 1281241_g170
Mean and std. dev of mag. difference (MAG_DELTA) are 1.427 and 0.681 for 1281241_g170
Found 1 entries without IDs and 1 entries that are acceptable afterglow candidates for 1281241_g170.
Acceptable entries have no ID, XRT distances < 6", 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=166.5900 (11:06:21.60) DEC=-15.1430 (-15:08:34.8)
XRT distances are from RA=166.5761 (11:06:18.26) DEC=-15.1119 (-15:06:42.8)
-----------------
Entry 2 in the list of sources is a candidate afterglow for 1281241_g170 with 5x5 stamp
ra=166.57077 (11:06:16.99) dec=-15.09184 (-15:05:30.6) +/- 1.1" mag=19.93+/-0.35
dist=74.5 REFID=18
*** The position of this source is inconsistent with the XRT position.
The position is 195.9 arc sec from the BAT position.
src: 2 distr. of nearby unmatched sources: 0 0 0 0 1
Found 2 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
166.5705 -15.0909 3.4 -1 USNO-B1 16.16 15.43 15.75 *
166.5705 -15.0910 3.3 -1 GSC2.3 16.07 15.57 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 1 entries in star catalog(s) within 10" of the XRT position.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
166.5748 -15.1134 7.1 -1 GSC2.3 19.92 99.99 99.99
The closest star is 7.05" away.
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 < 6",
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 1281241
------ Start for Possible Stand-alone Circular ----
In response to GRB250114 (Swift/BAT trigger 1281241) at 07:33:19 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 136 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 11:06:18.43 = 166.57679
DEC(J2000) = -15:06:41.7 = -15.11159
with a 90%-confidence error radius of about 0.74 arc sec. This position is 2.7
arc sec. from the center of the XRT error circle. The estimated magnitude is
20.35 with a 1-sigma error of about 0.20. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.056.
------- notes for trigger 1281241 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 250114d12h26m02s929267usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1281241
-expid=758532970 -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/1281241/
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 758532970.97484 or about 2025:015:07:36:05 UT
Found 294 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 5% of the srclist region. Found 20 sources in
srclist catalog. Found 1 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 6 source(s) in Genie image catalog. 1 source(s) are within 10.0" of the
xrt position. Found 2 Genie image source(s) without IDs. There are 1 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
20.80 mag. Found 33 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 4% of the Genie image region. The
closest srclist source has ra= 166.5738 dec= -15.1224 mag=19.36 sep=38.54".
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?
758532970 135 WHITE srclist found no candidates.
758532970 135 WHITE 166.57679 -15.11159 20.35/20.8 2.7 image Yes
List afterglow candidates for other finding charts.
758533128 293 U srclist found no candidates.
758533128 293 U image found no candidates.
758533707 872 WHITE srclist found no candidates.
758533707 872 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: -15.11159
GRB_ERROR: 0.74
GRB_RA: 166.57679
IMAGE_START_TIME: 07:36:05
MAGNITUDE: 20.35
MAG_ERROR: 0.20
MESSAGE_TYPE: ACK
SOURCE: XRT