image overlap message for exposure 3 of trigger 1031728
uvot_overlap.pl vrs. 2010-12-20b fem started at 210210d08h00m59s062922usUT
The observation of trigger 1031728 started 2021-02-10T02:15:32.2
Examining file ./1031728_g904_uvot_sky_image.fits
The exposure ID is 634616132
The exposure time is 149.846 (seconds)
The filter is WHITE.
*** Warning -- found 22038 null pixels in the image.
The uvot region is centered at (262.8156,14.6463) with a roll angle of 112.9
It is square with sides of 2.68 arc min. for an area of 7.17 sq arc min
The BAT error circle is centered at (262.8110,14.6480) with a radius of 3.000 arc min
This is 0.286 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 7.17 sq. arc min or 0.25 of the BAT error circle
The XRT error circle is centered at (262.7704,14.6626) with a radius of 0.028 arc min
This is 2.798 arc min from the center of the uvot region
The area of the XRT error circle is 0.003 sq. arc min
The UVOT/XRT overlap is 0.000 sq. arc min or 0.00 of the XRT error circle
image afterglow message for exposure 3 of trigger 1031728
find_uvot_ag.pl vrs. 2020-10-30 fem started at 210210d08h01m22s911163usUT
Observation start time is 2021-02-10T02:15:32.2
Examining file ./1031728_g904_uvot_catalog_image.fits
The exposure ID is 634616132
The exposure is 149.846 sec.
The bin size is 2 pixels
The filter is WHITE
There are 5 detected source(s) for 1031728_g904
Aspect correction adds -0.00012 degrees (-0.028 sec of time = -0.40 arc sec) to RA
Aspect correction adds -0.00109 degrees (-3.92 arcsec) to Dec
Total aspect correction is 3.94 arcsec
Star catalogs centered at 262.8156 , 14.6559 with radius 2.17 arc min.
n_usno: 108 n_gsc: 0
*** WARNING -- XRT position is outside star catalog search region.
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 5 matched entries is 0.558" for 1031728_g904
Mean and std. dev of mag. difference (MAG_DELTA) are 0.627 and 0.121 for 1031728_g904
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 1031728_g904.
Acceptable entries have no ID, XRT distances < 5", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
Magnitude criteria will be applied later.
BAT distances are from RA=262.8110 (17:31:14.64) DEC=14.6480 (+14:38:52.8)
XRT distances are from RA=262.7704 (17:31:04.90) DEC=14.6626 (+14:39:45.2)
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
There are 0.0000000 counts in the bkg source region of 0.0000000 pixels.
Do not compute counts in XRT region because position is too far from center.
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 19.42, XRT distances < 5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 1031728_634616132_210210d08h01m22s911163usUT_bkg.region
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(262.8156,14.6463,45")
image paragraph message for exposure 3 of trigger 1031728
------ Start for Possible Stand-alone Circular ----
In response to GRB210210 (Swift/BAT trigger 1031728) at 02:00:27 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 877 seconds after the BAT trigger. There is a candidate afterglow in
the list of sources generated on-board at
RA(J2000) = 17:31:05.01 = 262.77086
DEC(J2000) = +14:39:46.5 = 14.66293
with a 90%-confidence error radius of about 1.10 arc sec. This position is 2.0
arc sec. from the center of the XRT error circle. The estimated magnitude is
16.97. No correction has been made for the expected extinction corresponding to
E(B-V) of 0.097.
------- notes for trigger 1031728 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 210210d08h01m26s356261usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1031728
-expid=634616132 -meonly -msg_image
Results from standard processing of UVOT TDRSS data for this trigger should be
available at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/1031728/
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 634616132.17718 or about 2021:041:02:15:27 UT
Found 1940 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 17% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 6 srclist
source(s) without IDs. There are 1 good candidate(s) in the srclist catalog.
Good candidates must be brighter than 19.22 mag.
Found 5 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 19.42 mag. Found 104 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 15% of the
Genie image region. The XRT position was OUTSIDE the star catalog search
region. The Genie image is INCOMPLETE with 22038 null pixels.
The closest Genie source has ra= 262.8186 dec= 14.6746 mag=19.52 sep=173.30".
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?
634616132 877 WHITE 262.77086 14.66293 16.97/19.2 2.0 srclist Yes
634616132 877 WHITE image found no candidates.
List afterglow candidates for other finding charts.
634615339 84 WHITE 262.77085 14.66272 17.06/19.2 1.6 srclist Yes
634615339 84 WHITE image found no candidates.
634615552 297 U 262.77112 14.66281 16.69/18.1 2.6 srclist Yes
634615552 297 U image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: SRCLIST
FILTER: white
GRB_DEC: 14.66293
GRB_ERROR: 1.10
GRB_RA: 262.77086
IMAGE_START_TIME: 02:15:27
MAGNITUDE: 16.97
MAG_ERROR: 0.4
MESSAGE_TYPE: ACK
SOURCE: XRT