image overlap message for exposure 2 of trigger 1125809
uvot_overlap.pl vrs. 2010-12-20b fem started at 220930d15h37m53s636721usUT
The observation of trigger 1125809 started 2022-09-30T11:26:52.1
Examining file ./1125809_g899_uvot_sky_image.fits
The exposure ID is 686230012
The exposure time is 149.879 (seconds)
The filter is WHITE.
*** Warning -- found 21296 null pixels in the image.
The uvot region is centered at (64.7214,13.3523) with a roll angle of 85.0
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 (64.7370,13.3520) with a radius of 3.000 arc min
This is 0.913 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 at most 6.24 sq. arc min or 0.22 of the BAT error circle
The XRT error circle is centered at (64.7172,13.3490) with a radius of 0.037 arc min
This is 0.314 arc min from the center of the uvot region
The area of the XRT error circle is 0.004 sq. arc min
The UVOT/XRT overlap is 0.00 sq. arc min or 0.00 of the XRT error circle
image afterglow message for exposure 2 of trigger 1125809
find_uvot_ag.pl vrs. 2020-10-30 fem started at 220930d15h38m02s817719usUT
Observation start time is 2022-09-30T11:26:52.1
Examining file ./1125809_g899_uvot_catalog_image.fits
The exposure ID is 686230012
The exposure is 149.879 sec.
The bin size is 2 pixels
The filter is WHITE
There are 3 detected source(s) for 1125809_g899
Aspect correction adds 0.00143 degrees (0.343 sec of time = 5.01 arc sec) to RA
Aspect correction adds -0.00014 degrees (-0.52 arcsec) to Dec
Total aspect correction is 5.03 arcsec
Star catalogs centered at 64.7198 , 13.3609 with radius 2.61 arc min.
n_usno: 49 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 2 matched entries is 0.300" for 1125809_g899
Mean and std. dev of mag. difference (MAG_DELTA) are 1.421 and 0.047 for 1125809_g899
Found 1 entries without IDs and 1 entries that are acceptable afterglow candidates for 1125809_g899.
Acceptable entries have no ID, XRT distances < 5.5", 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=64.7370 (04:18:56.88) DEC=13.3520 (+13:21:07.2)
XRT distances are from RA=64.7172 (04:18:52.12) DEC=13.3490 (+13:20:56.5)
*** WARNING 33 per cent of entries have no IDs.
-----------------
Entry 1 in the list of sources is a candidate afterglow for 1125809_g899 with genie
ra=64.73600 (04:18:56.64) dec=13.36719 (+13:22:01.9) +/- 1.2" mag=21.14+/-0.34
dist=92.9 REFID=3 major=1.1 minor=0.8 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 54.8 arc sec from the BAT position.
This source is near the edge of image (0.855)
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
64.7408 13.3653 18.0 -1 USNO-B1 21.55 19.57 20.45
*** If XRT position is correct, then this is NOT the afterglow
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.
There are 0.0000000 counts in the xrt source region of 0.0000000 pixels.
There are 0.0000000 counts in the xrt_bkg source region of 0.0000000 pixels.
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 19.42, XRT distances < 5.5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 1125809_686230012_220930d15h38m02s817719usUT_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(64.7214,13.3523,45")
Region file: 1125809_686230012_220930d15h38m02s817719usUT_xrt.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(64.71717,13.34903,8")
Region file: 1125809_686230012_220930d15h38m02s817719usUT_xrt_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(64.71717,13.34903,25")
fk5;-circle(64.71717,13.34903,15")
image paragraph message for exposure 2 of trigger 1125809
IMAGE PROBLEM: no overlap
------ Start for Possible Stand-alone Circular ----
In response to GRB220930 (Swift/BAT trigger 1125809) at 11:11:52 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 870 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 none of
the XRT error circle. 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 mag. No correction has been made for the expected
extinction corresponding to E(B-V) of 0.639.
------- notes for trigger 1125809 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 220930d15h38m06s545650usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1125809
-expid=686230012 -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/1125809/
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 686230012.11272 or about 2022:273:11:26:47 UT
Found 473 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 4% of the srclist region. Found 51 sources in
srclist catalog. Found 3 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. 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 19.42 mag. Found 45 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 4% of the
Genie image region. The Genie image is INCOMPLETE with 21296 null pixels.
Found no Genie image background information. The closest srclist source has ra=
64.7241 dec= 13.3462 mag=19.51 sep=26.19". The closest Genie source has ra=
64.7360 dec= 13.3672 mag=21.14 sep=92.88".
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?
686230012 869 WHITE srclist found no candidates.
686230012 869 WHITE image found no candidates.
List afterglow candidates for other finding charts.
686229321 178 WHITE srclist found no candidates.
686229321 178 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: SRCLIST
FILTER: white
GRB_DEC: 13.34903
GRB_ERROR: 5.5
GRB_RA: 64.71717
IMAGE_START_TIME: 11:26:47
MAGNITUDE: 18.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT