image overlap message for exposure 1 of trigger 1080859
uvot_overlap.pl vrs. 2010-12-20b fem started at 211024d06h46m00s398728usUT
The observation of trigger 1080859 started 2021-10-23T21:07:57.6
Examining file ./1080859_g124_uvot_sky_image.fits
The exposure ID is 656716077
The exposure time is 149.857 (seconds)
The filter is WHITE.
The uvot region is centered at (170.3084,39.1354) with a roll angle of 136.6
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 (170.3020,39.1370) with a radius of 3.000 arc min
This is 0.313 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 (170.3087,39.1353) with a radius of 0.045 arc min
This is 0.015 arc min from the center of the uvot region
The area of the XRT error circle is 0.006 sq. arc min
The UVOT/XRT overlap is 0.006 sq. arc min or 1.00 of the XRT error circle
image afterglow message for exposure 1 of trigger 1080859
find_uvot_ag.pl vrs. 2020-10-30 fem started at 211024d06h46m05s757307usUT
Observation start time is 2021-10-23T21:07:57.6
Examining file ./1080859_g124_uvot_catalog_image.fits
The exposure ID is 656716077
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 3 detected source(s) for 1080859_g124
Aspect correction adds -0.00056 degrees (-0.134 sec of time = -1.56 arc sec) to RA
Aspect correction adds -0.00073 degrees (-2.64 arcsec) to Dec
Total aspect correction is 3.07 arcsec
Star catalogs centered at 170.2949 , 39.1362 with radius 2.07 arc min.
n_usno: 23 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 2 matched entries is 1.116" for 1080859_g124
Mean and std. dev of mag. difference (MAG_DELTA) are 0.945 and 0.031 for 1080859_g124
Found 1 entries without IDs and 1 entries that are acceptable afterglow candidates for 1080859_g124.
Acceptable entries have no ID, XRT distances < 6.75", 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=170.3020 (11:21:12.48) DEC=39.1370 (+39:08:13.2)
XRT distances are from RA=170.3087 (11:21:14.09) DEC=39.1353 (+39:08:07.2)
*** WARNING 33 per cent of entries have no IDs.
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1080859_g124 with genie
ra=170.30963 (11:21:14.31) dec=39.13578 (+39:08:08.8) +/- 0.8" mag=19.32+/-0.16
dist=3.0 REFID=3 major=1.0 minor=1.0 flag=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)
uvot_check_outside found 13 of 13 good pixels
##### This source remains a candidate #####
It has no entries within 3.5" 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:
Unmatched source ra=170.30963 (11:21:14.31) dec=39.13578 (+39:08:08.8) +/- 0.8" mag=19.32+/-0.16 dist=3.0 REFID=3 flag=0
There are 93230.898 counts in the bkg source region of 6083.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 15.326 counts/pixel (5-sig UL in 4" is 19.87 mag) for 1080859_g124
There are 1045.9548 counts in the src source region of 51.000000 pixels.
Rate in src region with 4 arcsec radius is 20.509 counts/pixel for 1080859_g124
There are 19073.172 counts in the cand_src_bkg source region of 1242.0000 pixels.
Rate in cand_src_bkg region from 15 to 25 arcsec is 15.357 counts/pixel (5-sig UL in 4" is 19.87 mag) for 1080859_g124
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 20.42, XRT distances < 6.75",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 1 good candidate(s) found.
Region file: 1080859_656716077_211024d06h46m05s757307usUT_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(170.3084,39.1354,45")
fk5;-circle(170.309632973781,39.1357794240634,6")
fk5;-circle(170.301885516699,39.1436545334946,6")
Region file: 1080859_656716077_211024d06h46m05s757307usUT_cand_src.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(170.309632973781,39.1357794240634,4")
Region file: 1080859_656716077_211024d06h46m05s757307usUT_cand_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(170.309632973781,39.1357794240634,25")
fk5;-circle(170.309632973781,39.1357794240634,15")
image paragraph message for exposure 1 of trigger 1080859
------ Start for Possible Stand-alone Circular ----
In response to GRB211023 (Swift/BAT trigger 1080859) at 21:05:52 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 97 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 11:21:14.31 = 170.30963
DEC(J2000) = +39:08:08.8 = 39.13578
with a 90%-confidence error radius of about 0.79 arc sec. This position is 3.0
arc sec. from the center of the XRT error circle. The estimated magnitude is
19.32 with a 1-sigma error of about 0.16. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.024.
------- notes for trigger 1080859 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 211024d06h46m09s269160usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1080859
-expid=656716077 -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/1080859/
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 656716077.58564 or about 2021:296:21:07:52 UT
Found 191 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 3% of the srclist region. Found 21 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
19.22 mag.
Found 3 source(s) in Genie image catalog. 1 source(s) are within 10.0" of the
xrt position. Found 1 Genie image source(s) without IDs. There are 1 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
20.42 mag. Found 19 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 3% of the Genie image region. The
closest srclist source has ra= 170.3018 dec= 39.1436 mag=17.74 sep=35.34".
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?
656716077 96 WHITE srclist found no candidates.
656716077 96 WHITE 170.30963 39.13578 19.32/20.4 3.0 image Yes
List afterglow candidates for other finding charts.
656716290 309 U srclist found no candidates.
656716290 309 U image found no candidates.
656716843 862 WHITE srclist found no candidates.
656716843 862 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 39.13578
GRB_ERROR: 0.79
GRB_RA: 170.30963
IMAGE_START_TIME: 21:07:52
MAGNITUDE: 19.32
MAG_ERROR: 0.16
MESSAGE_TYPE: ACK
SOURCE: XRT