image overlap message for exposure 1 of trigger 1031728
uvot_overlap.pl vrs. 2010-12-20b fem started at 210210d08h00m57s548603usUT
The observation of trigger 1031728 started 2021-02-10T02:02:19.5
Examining file ./1031728_g111_uvot_sky_image.fits
The exposure ID is 634615339
The exposure time is 149.868 (seconds)
The filter is WHITE.
The uvot region is centered at (262.8146,14.6488) 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 0.216 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 2.696 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 1 of trigger 1031728
find_uvot_ag.pl vrs. 2020-10-30 fem started at 210210d08h01m03s621297usUT
Observation start time is 2021-02-10T02:02:19.5
Examining file ./1031728_g111_uvot_catalog_image.fits
The exposure ID is 634615339
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 20 detected source(s) for 1031728_g111
Aspect correction adds -0.00031 degrees (-0.074 sec of time = -1.08 arc sec) to RA
Aspect correction adds -0.00111 degrees (-4.01 arcsec) to Dec
Total aspect correction is 4.15 arcsec
Star catalogs centered at 262.8112 , 14.6506 with radius 2.53 arc min.
n_usno: 146 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 19 matched entries is 0.338" for 1031728_g111
Mean and std. dev of mag. difference (MAG_DELTA) are 0.660 and 0.386 for 1031728_g111
Found 1 entries without IDs and 1 entries that are acceptable afterglow candidates for 1031728_g111.
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)
-----------------
Entry 8 in the list of sources is a candidate afterglow for 1031728_g111 with genie
ra=262.80554 (17:31:13.33) dec=14.66653 (+14:39:59.5) +/- 0.7" mag=19.83+/-0.18
dist=123.1 REFID=5 major=1.1 minor=1.0 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 69.4 arc sec from the BAT position.
This source is near the edge of image (0.866)
Found 2 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)
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
262.8058 14.6619 16.8 -1 USNO-B1 20.23 19.27 19.70
262.8054 14.6666 0.6 -1 USNO-B1 20.29 19.13 19.65 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 5.25" or brighter than 12 mag
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
There are 65295.051 counts in the bkg source region of 5932.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 11.007 counts/pixel (5-sig UL in 4" is 20.05 mag) for 1031728_g111
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 20.60, 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_634615339_210210d08h01m03s621297usUT_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(262.8146,14.6488,45")
fk5;-circle(262.808273797138,14.6465753122554,6")
fk5;-circle(262.823389382248,14.6465867789,6")
fk5;-circle(262.823179703699,14.6506373464133,6")
fk5;-circle(262.818520189991,14.6354359523253,6")
fk5;-circle(262.8269089119,14.6435693194704,6")
image paragraph message for exposure 1 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 85 seconds after the BAT trigger. There is a candidate afterglow in
the list of sources generated on-board at
RA(J2000) = 17:31:05.00 = 262.77085
DEC(J2000) = +14:39:45.8 = 14.66272
with a 90%-confidence error radius of about 1.10 arc sec. This position is 1.6
arc sec. from the center of the XRT error circle. The estimated magnitude is
17.06. 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 210210d08h01m08s105129usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1031728
-expid=634615339 -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 634615339.50602 or about 2021:041:02:02:14 UT
Found 984 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 16% of the srclist region. Found 134 sources in
srclist catalog. Found 9 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 20 source(s) in Genie image catalog. Found 1 Genie image source(s)
without IDs. There are 0 good candidate(s) in the Genie image catalog. Good
candidates must be brighter than 20.60 mag. Found 142 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
15% of the Genie image region. The closest Genie source has ra= 262.7871 dec=
14.6543 mag=18.41 sep=65.40".
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?
634615339 84 WHITE 262.77085 14.66272 17.06/19.2 1.6 srclist Yes
634615339 84 WHITE image found no candidates.
List afterglow candidates for other finding charts.
634615552 297 U 262.77112 14.66281 16.69/18.1 4.6 srclist Yes
634615552 297 U image found no candidates.
634616132 877 WHITE 262.77086 14.66293 16.97/19.2 3.9 srclist Yes
634616132 877 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: SRCLIST
FILTER: white
GRB_DEC: 14.66272
GRB_ERROR: 1.10
GRB_RA: 262.77085
IMAGE_START_TIME: 02:02:14
MAGNITUDE: 17.06
MAG_ERROR: 0.4
MESSAGE_TYPE: ACK
SOURCE: XRT