srclist overlap message for exposure 2 of trigger 1088376
uvot_overlap.pl vrs. 2010-12-20b fem started at 211208d00h03m36s327680usUT
The observation of trigger 1088376 started 2021-12-07T20:58:21.0
Examining file ./1088376_g324_uvot_sky_srclist.fits
The exposure ID is 660603501
The exposure time is undefined.
The filter is U.
The uvot region is centered at (149.6310,-24.3527) with a roll angle of 116.8
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 (149.6250,-24.3520) with a radius of 3.000 arc min
This is 0.332 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 (149.6238,-24.3597) with a radius of 0.038 arc min
This is 0.575 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 1088376
find_uvot_ag.pl vrs. 2020-10-30 fem started at 211208d00h03m53s810168usUT
Observation start time is 2021-12-07T20:58:21.0
Examining file ./1088376_g324_uvot_catalog_srclist.fits
The exposure ID is 660603501
The exposure is 249.935 sec.
The bin size is 2 pixels
The filter is U
There are 190 detected source(s) for 1088376_g324
*** WARNING -- the sources have filled the available telemetry buffer (190).
srclist_overlap returned: bat_overlap 1.000
srclist_overlap returned: xrt_overlap 1.000
Dimmest detected source in 1088376_g324 has mag 18.65
Aspect correction adds -0.00023 degrees (-0.054 sec of time = -0.74 arc sec) to RA
Aspect correction adds 0.00066 degrees ( 2.38 arcsec) to Dec
Total aspect correction is 2.50 arcsec
Star catalogs centered at 149.6336 , -24.3555 with radius 9.17 arc min.
n_usno: 869 n_gsc: 0
*** WARNING -- bright star catalog has 5 entries brighter than 12 mag
The brightest has mag 8.07252
RA DEC Mag Color
bright star 0: 149.64403 (09:58:34.57) -24.33615 (-24:20:10.1) 8.07 USNO-V
bright star 1: 149.67206 (09:58:41.29) -24.40719 (-24:24:25.9) 11.10 USNO-V
bright star 2: 149.71169 (09:58:50.80) -24.29741 (-24:17:50.7) 11.62 USNO-V
bright star 3: 149.69807 (09:58:47.54) -24.26885 (-24:16:07.9) 11.16 USNO-V
bright star 4: 149.76741 (09:59:04.18) -24.39987 (-24:23:59.5) 10.98 USNO-V
Mean distance difference (CAT_DELTA) for 85 matched entries is 0.820" for 1088376_g324
Mean and std. dev of mag. difference (MAG_DELTA) are 1.896 and 0.803 for 1088376_g324
Found 106 entries without IDs and 1 entries that are acceptable afterglow candidates for 1088376_g324.
Acceptable entries have no ID, XRT distances < 5.75", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
99 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=149.6250 (09:58:30.00) DEC=-24.3520 (-24:21:07.2)
XRT distances are from RA=149.6238 (09:58:29.71) DEC=-24.3597 (-24:21:34.8)
*** WARNING 55 per cent of entries have no IDs.
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1088376_g324 with 1x1 stamp
ra=149.62412 (09:58:29.79) dec=-24.35901 (-24:21:32.4) +/- 1.1" mag=18.21+/-0.35
dist=2.6 REFID=118
src: 0 distr. of nearby unmatched sources: 0 0 0 0 0
Found 0 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)
##### This source remains a candidate #####
It has no entries 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:
Unmatched source ra=149.62412 (09:58:29.79) dec=-24.35901 (-24:21:32.4) +/- 1.1" mag=18.21+/-0.35 dist=2.6 REFID=118
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 < 5.75",
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 1088376
------ Start for Possible Stand-alone Circular ----
In response to GRB211207 (Swift/BAT trigger 1088376) at 20:52:56 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
296 seconds after the BAT trigger. There is a candidate afterglow in the
rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 09:58:29.76 = 149.62399
DEC(J2000) = -24:21:31.4 = -24.35872
with a 90%-confidence error radius of about 0.65 arc sec. This position is 3.5
arc sec. from the center of the XRT error circle. The estimated magnitude is
18.16 with a 1-sigma error of about 0.16. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.050.
------- notes for trigger 1088376 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 211208d00h03m57s920444usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1088376
-expid=660603501 -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/1088376/
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 660603501.04652 or about 2021:341:20:58:16 UT
Found 865 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 7% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 106 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 10 source(s) in Genie image catalog. 1 source(s) are within 10.0" of the
xrt position. Found 4 Genie image source(s) without IDs. There are 1 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
20.22 mag. Found 87 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 10% of the Genie image region.
Found 1 srclist source(s) within 10.0" of the XRT position.
The brightest such source has ra= 149.6241 dec= -24.3590 mag=18.21 sep=2.63".
The closest srclist source has ra= 149.6241 dec= -24.3590 mag=18.21 sep=2.63".
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?
660603501 296 U 149.62412 -24.35901 18.21/18.1 2.6 srclist Yes
660603501 296 U 149.62399 -24.35872 18.16/20.2 3.5 image Yes
List afterglow candidates for other finding charts.
660603289 84 WHITE 149.62419 -24.35877 18.12/19.2 3.5 srclist Yes
660603289 84 WHITE 149.62408 -24.35863 17.45/20.6 3.9 image Yes
660604080 875 WHITE srclist found no candidates.
660604080 875 WHITE 149.62399 -24.35858 19.74/20.4 4.3 image Yes
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: u
GRB_DEC: -24.35872
GRB_ERROR: 0.65
GRB_RA: 149.62399
IMAGE_START_TIME: 20:58:16
MAGNITUDE: 18.16
MAG_ERROR: 0.16
MESSAGE_TYPE: ACK
SOURCE: XRT