srclist overlap message for exposure 2 of trigger 1054627
uvot_overlap.pl vrs. 2010-12-20b fem started at 210610d18h10m51s187818usUT
The observation of trigger 1054627 started 2021-06-10T15:09:17.1
Examining file ./1054627_g333_uvot_sky_srclist.fits
The exposure ID is 645030557
The exposure time is undefined.
The filter is U.
The uvot region is centered at (204.2777,14.4823) with a roll angle of 304.2
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 (204.2850,14.4800) with a radius of 3.000 arc min
This is 0.446 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 (204.2821,14.4654) with a radius of 0.038 arc min
This is 1.047 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 1054627
find_uvot_ag.pl vrs. 2020-10-30 fem started at 210610d18h11m04s571628usUT
Observation start time is 2021-06-10T15:09:17.1
Examining file ./1054627_g333_uvot_catalog_srclist.fits
The exposure ID is 645030557
The exposure is 249.935 sec.
The bin size is 2 pixels
The filter is U
There are 36 detected source(s) for 1054627_g333
Aspect correction adds -0.00218 degrees (-0.522 sec of time = -7.58 arc sec) to RA
Aspect correction adds -0.00014 degrees (-0.49 arcsec) to Dec
Total aspect correction is 7.60 arcsec
Star catalogs centered at 204.2828 , 14.4993 with radius 7.96 arc min.
n_usno: 473 n_gsc: 0
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 10.78172
RA DEC Mag Color
bright star 0: 204.26464 (13:37:03.51) 14.52620 (+14:31:34.3) 10.78 USNO-V
Mean distance difference (CAT_DELTA) for 26 matched entries is 0.728" for 1054627_g333
Mean and std. dev of mag. difference (MAG_DELTA) are 1.601 and 0.779 for 1054627_g333
Found 10 entries without IDs and 0 entries that are acceptable afterglow candidates for 1054627_g333.
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.
10 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=204.2850 (13:37:08.40) DEC=14.4800 (+14:28:48.0)
XRT distances are from RA=204.2821 (13:37:07.71) DEC=14.4654 (+14:27:55.4)
*** WARNING 27 per cent of entries have no IDs.
Found NO acceptable entries.
Unidentified entry closest to XRT position is no. 4:
ra=204.26503 dec= 14.52436 +/- 1.1" mag=18.91+/-0.35 dist=220.5 REFID=27
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 < 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 1054627
------ Start for Possible Stand-alone Circular ----
In response to GRB210610 (Swift/BAT trigger 1054627) at 15:03:43 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
306 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
0.032.
------- notes for trigger 1054627 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 210610d18h11m14s454315usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1054627
-expid=645030557 -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/1054627/
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 645030557.12414 or about 2021:161:15:09:12 UT
Found 469 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 5% of the srclist region. Found 36 sources in
srclist catalog. Found 10 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 1 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 20.64 mag. Found 25 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 4% of the
Genie image region.
Genie image analysis:
Found 12750.1 counts in the large background region of 6307.0 pixels or a rate
of 2.022 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 19.93 mag. for a
4-arcsec aperture.
Found 424.1 counts in the XRT position region of 201.0 pixels or a rate of
2.110 counts/pixel in a radius of 8.0 arcsec. The net count rate (using large
background region) at the XRT position is 0.071 +/- 0.084 (1-sigma) cps or
21.06 mag and a range from 20.21 to 99.99 mag. The 3-sigma UL at the XRT
position is 0.322 cps or 19.42 mag. The closest srclist source has ra= 204.3213
dec= 14.4820 mag=18.18 sep=148.92". The closest Genie source has ra= 204.2780
dec= 14.4966 mag=19.85 sep=113.22".
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?
645030557 306 U srclist found no candidates.
645030557 306 U image found no candidates.
List afterglow candidates for other finding charts.
645030344 93 WHITE 204.28155 14.46527 17.68/19.2 2.1 srclist Yes
645030344 93 WHITE 204.28174 14.46528 17.12/20.8 1.4 image Yes
645031111 860 ? srclist data are not available.
645031111 860 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: u
GRB_DEC: 14.46539
GRB_ERROR: 5.75
GRB_RA: 204.28213
IMAGE_START_TIME: 15:09:12
MAGNITUDE: 19.4
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT