srclist overlap message for exposure 3 of trigger 1076121
uvot_overlap.pl vrs. 2010-12-20b fem started at 211001d01h21m15s174941usUT
The observation of trigger 1076121 started 2021-10-01T00:58:09.7
Examining file 1076121_g889_uvot_sky_srclist.fits
The exposure ID is 654742689
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (71.4769,12.0410) with a roll angle of 87.7
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 (71.4700,12.0400) with a radius of 3.000 arc min
This is 0.410 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
Could not find the location of an XRT error circle
srclist afterglow message for exposure 3 of trigger 1076121
find_uvot_ag.pl vrs. 2020-10-30 fem started at 211001d01h21m17s251527usUT
Observation start time is 2021-10-01T00:58:09.7
Examining file 1076121_g889_uvot_catalog_srclist.fits
The exposure ID is 654742689
The exposure is 150.000 sec.
The bin size is 2 pixels
The filter is WHITE
There are 108 detected source(s) for 1076121_g889
Aspect correction adds 0.00129 degrees (0.309 sec of time = 4.53 arc sec) to RA
Aspect correction adds -0.00024 degrees (-0.86 arcsec) to Dec
Total aspect correction is 4.61 arcsec
Star catalogs centered at 71.4747 , 12.0483 with radius 8.47 arc min.
n_usno: 605 n_gsc: 0
*** WARNING -- bright star catalog has 2 entries brighter than 12 mag
The brightest has mag 10.2424
RA DEC Mag Color
bright star 0: 71.53966 (04:46:09.52) 12.09052 (+12:05:25.9) 11.84 USNO-V
bright star 1: 71.36574 (04:45:27.78) 12.07257 (+12:04:21.2) 10.24 USNO-V
*** WARNING -- no XRT distances are available.
Mean distance difference (CAT_DELTA) for 100 matched entries is 0.754" for 1076121_g889
Mean and std. dev of mag. difference (MAG_DELTA) are 1.663 and 0.432 for 1076121_g889
Found 8 entries without IDs and 0 entries that are acceptable afterglow candidates for 1076121_g889.
Acceptable entries have no ID, BAT distance < 200" or XRT distance < 10", 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=71.4700 (04:45:52.80) DEC=12.0400 (+12:02:24.0)
XRT distances are as reported in catalog file.
Found NO acceptable entries.
Unidentified entry closest to BAT position is no. 31:
ra= 71.51539 dec= 12.07756 +/- 1.1" mag=20.10+/-0.35 dist=209.3 REFID=106
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 18.66, BAT distances < 200",
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 1076121
------ Start for Possible Stand-alone Circular ----
In response to GRB211001 (Swift/BAT trigger 1076121) at 00:43:19 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of nominal 150.000 seconds with the White
filter starting 862 seconds after the BAT trigger. No credible afterglow
candidate has been found in the initial data products. Data from the 2.7'x2.7'
sub-image are not available at this time. The 8'x8' region for the list of
sources generated on-board covers 100% of the BAT 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 0.411.
------- notes for trigger 1076121 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 211001d01h21m19s602257usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1076121
-expid=654742689 -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/1076121/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
*** Warning -- no exposure found, using srclist assumed value.
No XRT position found for srclist. BAT position found.
UVOT exposure began at MET 654742689.65406 or about 2021:274:00:58:04 UT
Found 601 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 5% of the srclist region. Found 108 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
18.66 mag.
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?
654742689 861 WHITE srclist found no candidates.
654742689 861 ? image data are not available.
List afterglow candidates for other finding charts.
654741900 72 WHITE 71.44878 12.07608 19.31/18.7 149.8 srclist Yes
654741900 72 WHITE image found no candidates.
654742111 283 U srclist found no candidates.
654742111 283 U image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: SRCLIST
FILTER: white
GRB_DEC: 12.04000
GRB_ERROR: 200
GRB_RA: 71.47000
IMAGE_START_TIME: 00:58:04
MAGNITUDE: 18.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: BAT