srclist overlap message for exposure 2 of trigger 1248132
uvot_overlap.pl vrs. 2010-12-20b fem started at 250910d14h11m08s983936usUT
The observation of trigger 1248132 started 2024-08-11T14:13:21.8
Examining file 1248132_g347_uvot_sky_srclist.fits
The exposure ID is 745078401
The exposure time is undefined.
The filter is U.
The uvot region is centered at (226.3588,28.8935) with a roll angle of 280.8
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 (226.3283,28.8840) with a radius of 1.800 arc min
This is 1.700 arc min from the center of the uvot region
The area of the BAT error circle is 10.18 sq. arc min
The UVOT/BAT overlap is 10.18 sq. arc min or 1.00 of the BAT error circle
The XRT error circle is centered at (226.3623,28.8961) with a radius of 0.040 arc min
This is 0.242 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 2 of trigger 1248132
find_uvot_ag.pl vrs. 2023-04-25a fem started at 250910d14h11m09s656695usUT
Observation start time is 2024-08-11T14:13:21.8
Examining file 1248132_g347_uvot_catalog_srclist.fits
The exposure ID is 745078401
The exposure is 249.924 sec.
The bin size is 2 pixels
The filter is U
There are 74 detected source(s) for 1248132_g347
Aspect correction adds -0.00060 degrees (-0.144 sec of time = -1.89 arc sec) to RA
Aspect correction adds -0.00000 degrees (-0.02 arcsec) to Dec
Total aspect correction is 1.89 arcsec
Star catalogs centered at 226.3494 , 28.8940 with radius 5.50 arc min.
n_usno: 241 n_gsc: 227
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 10.77914
RA DEC Mag Color
bright star 0: 226.29102 (15:05:09.85) 28.87741 (+28:52:38.7) 10.78 USNO-V
Mean distance difference (CAT_DELTA) for 27 matched entries is 0.945" for 1248132_g347
Mean and std. dev of mag. difference (MAG_DELTA) are 1.163 and 1.381 for 1248132_g347
Found 48 entries without IDs and 0 entries that are acceptable afterglow candidates for 1248132_g347.
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.
46 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=226.3283 (15:05:18.80) DEC=28.8840 (+28:53:02.5)
XRT distances are from RA=226.3623 (15:05:26.96) DEC=28.8961 (+28:53:46.1)
*** WARNING 64 per cent of entries have no IDs.
Found NO acceptable entries.
Unidentified entry closest to XRT position is no. 12:
ra=226.31231 dec= 28.93423 +/- 1.1" mag=19.36+/-0.35 dist=208.9 REFID=59
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 18.12, 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 2 of trigger 1248132
------ Start for Possible Stand-alone Circular ----
In response to GRB240811 (Swift/BAT trigger 1248132) at 14:07:33 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
314 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 19.2 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 18.0 mag. No
correction has been made for the expected extinction corresponding to E(B-V) of
0.023.
------- notes for trigger 1248132 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 250910d14h11m10s702709usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1248132
-expid=745078401 -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/1248132/
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 745078401.78062 or about 2024:224:14:13:16 UT
Found 237 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 5% of the srclist region. Found 74 sources in
srclist catalog. Found 48 srclist source(s) without IDs. There are 0 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
18.12 mag.
Found 2 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 20.73 mag. Found 37 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 5% of the
Genie image region.
Genie image analysis:
Found 10658.0 counts in the large background region of 6261.0 pixels or a rate
of 1.702 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 19.98 mag. for a
4-arcsec aperture.
Found 319.1 counts in the XRT position region of 198.0 pixels or a rate of
1.612 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is -0.111 +/- 0.077 (1-sigma) cps. The
3-sigma UL at the XRT position is 0.232 cps or 19.73 mag. The closest srclist
source has ra= 226.3637 dec= 28.9064 mag=19.43 sep=37.31". The closest Genie
source has ra= 226.3639 dec= 28.9065 mag=19.25 sep=37.54".
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?
745078401 313 U srclist found no candidates.
745078401 313 U image found no candidates.
List afterglow candidates for other finding charts.
745078189 101 WHITE srclist found no candidates.
745078189 101 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: u
GRB_DEC: 28.89614
GRB_ERROR: 6
GRB_RA: 226.36233
IMAGE_START_TIME: 14:13:16
MAGNITUDE: 19.7
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT