image overlap message for exposure 1 of trigger 1120270
uvot_overlap.pl vrs. 2010-12-20b fem started at 220814d02h21m19s359336usUT
The observation of trigger 1120270 started 2022-08-13T19:25:13.5
Examining file ./1120270_g129_uvot_sky_image.fits
The exposure ID is 682111513
The exposure time is 149.868 (seconds)
The filter is WHITE.
The uvot region is centered at (81.5349,-33.0130) with a roll angle of 61.8
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 (81.5010,-32.9850) with a radius of 3.000 arc min
This is 2.396 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 5.06 sq. arc min or 0.18 of the BAT error circle
The XRT error circle is centered at (81.5315,-33.0169) with a radius of 0.033 arc min
This is 0.289 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 0.003 sq. arc min or 1.00 of the XRT error circle
image afterglow message for exposure 1 of trigger 1120270
find_uvot_ag.pl vrs. 2020-10-30 fem started at 220814d02h21m24s618826usUT
Observation start time is 2022-08-13T19:25:13.5
Examining file ./1120270_g129_uvot_catalog_image.fits
The exposure ID is 682111513
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 7 detected source(s) for 1120270_g129
Aspect correction adds 0.00053 degrees (0.127 sec of time = 1.60 arc sec) to RA
Aspect correction adds -0.00010 degrees (-0.38 arcsec) to Dec
Total aspect correction is 1.64 arcsec
Star catalogs centered at 81.5323 , -33.0162 with radius 2.35 arc min.
n_usno: 69 n_gsc: 0
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 11.37116
RA DEC Mag Color
bright star 0: 81.57783 (05:26:18.68) -33.01153 (-33:00:41.5) 11.37 USNO-V
Mean distance difference (CAT_DELTA) for 6 matched entries is 0.624" for 1120270_g129
Mean and std. dev of mag. difference (MAG_DELTA) are 1.344 and 0.730 for 1120270_g129
Found 1 entries without IDs and 1 entries that are acceptable afterglow candidates for 1120270_g129.
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.
0 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=81.5010 (05:26:00.24) DEC=-32.9850 (-32:59:06.0)
XRT distances are from RA=81.5315 (05:26:07.55) DEC=-33.0169 (-33:01:00.8)
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1120270_g129 with genie
ra=81.53155 (05:26:07.57) dec=-33.01636 (-33:00:58.9) +/- 0.7" mag=19.61+/-0.17
dist=1.9 REFID=6 major=1.0 minor=0.8 flag=0
Found 1 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
81.5273 -33.0152 13.6 -1 USNO-B1 20.37 19.88 20.09
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=81.53155 (05:26:07.57) dec=-33.01636 (-33:00:58.9) +/- 0.7" mag=19.61+/-0.17 dist=1.9 REFID=6 flag=0
There are 51250.430 counts in the bkg source region of 5979.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 8.572 counts/pixel (5-sig UL in 4" is 20.18 mag) for 1120270_g129
There are 641.14062 counts in the src source region of 51.000000 pixels.
Rate in src region with 4 arcsec radius is 12.571 counts/pixel for 1120270_g129
There are 9845.9961 counts in the cand_src_bkg source region of 1194.0000 pixels.
Rate in cand_src_bkg region from 15 to 25 arcsec is 8.246 counts/pixel (5-sig UL in 4" is 20.20 mag) for 1120270_g129
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 20.74, XRT distances < 5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 1 good candidate(s) found.
Region file: 1120270_682111513_220814d02h21m24s618826usUT_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(81.5349,-33.0130,45")
fk5;-circle(81.5315512222958,-33.0163590185924,6")
fk5;-circle(81.5392289952399,-33.0188805332382,6")
fk5;-circle(81.5354055077567,-33.0020579851661,6")
Region file: 1120270_682111513_220814d02h21m24s618826usUT_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(81.5315512222958,-33.0163590185924,4")
Region file: 1120270_682111513_220814d02h21m24s618826usUT_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(81.5315512222958,-33.0163590185924,25")
fk5;-circle(81.5315512222958,-33.0163590185924,15")
fk5;-circle(81.5392289952399,-33.0188805332382,6")
image paragraph message for exposure 1 of trigger 1120270
------ Start for Possible Stand-alone Circular ----
In response to GRB220813 (Swift/BAT trigger 1120270) at 19:23:03 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 100 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 05:26:07.57 = 81.53155
DEC(J2000) = -33:00:58.9 = -33.01636
with a 90%-confidence error radius of about 0.67 arc sec. This position is 1.9
arc sec. from the center of the XRT error circle. The estimated magnitude is
19.61 with a 1-sigma error of about 0.17. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.022.
------- notes for trigger 1120270 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 220814d02h21m28s226127usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1120270
-expid=682111513 -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/1120270/
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 682111513.47834 or about 2022:225:19:25:08 UT
Found 605 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 11% of the srclist region. Found 95 sources in
srclist catalog. Found 53 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 7 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
20.74 mag. Found 65 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 8% of the Genie image region.
Found 1 srclist source(s) within 10.0" of the XRT position.
The brightest such source has ra= 81.5315 dec= -33.0166 mag=19.90 sep=0.94".
The closest srclist source has ra= 81.5315 dec= -33.0166 mag=19.90 sep=0.94".
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?
682111513 99 WHITE 81.53153 -33.01664 19.90/19.2 0.9 srclist Yes
682111513 99 WHITE 81.53155 -33.01636 19.61/20.7 1.9 image Yes
List afterglow candidates for other finding charts.
682111671 257 U srclist found no candidates.
682111671 257 U image found no candidates.
682112273 859 WHITE srclist found no candidates.
682112273 859 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: -33.01636
GRB_ERROR: 0.67
GRB_RA: 81.53155
IMAGE_START_TIME: 19:25:08
MAGNITUDE: 19.61
MAG_ERROR: 0.17
MESSAGE_TYPE: ACK
SOURCE: XRT