image overlap message for exposure 1 of trigger 1141030
uvot_overlap.pl vrs. 2010-12-20b fem started at 221121d19h21m52s844451usUT
The observation of trigger 1141030 started 2022-11-20T21:35:08.9
Examining file ./1141030_g690672908_uvot_sky_image.fits
The exposure ID is 690672908
The exposure time is 249.946 (seconds)
The filter is U.
The uvot region is centered at (41.3389,43.2075) with a roll angle of 327.1
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 (41.3380,43.1900) with a radius of 3.000 arc min
This is 1.049 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 (41.3388,43.2431) with a radius of 0.500 arc min
This is 2.141 arc min from the center of the uvot region
The area of the XRT error circle is 0.785 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 1141030
find_uvot_ag.pl vrs. 2020-10-30 fem started at 221121d19h22m00s877628usUT
Observation start time is 2022-11-20T21:35:08.9
Examining file ./1141030_g690672908_uvot_catalog_image.fits
The exposure ID is 690672908
The exposure is 249.946 sec.
The bin size is 2 pixels
The filter is U
There are 15 detected source(s) for 1141030_g690672908
Aspect correction adds -0.00143 degrees (-0.342 sec of time = -3.74 arc sec) to RA
Aspect correction adds 0.00160 degrees ( 5.75 arcsec) to Dec
Total aspect correction is 6.86 arcsec
Star catalogs centered at 41.3358 , 43.2040 with radius 2.70 arc min.
n_usno: 179 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 15 matched entries is 0.372" for 1141030_g690672908
Mean and std. dev of mag. difference (MAG_DELTA) are -0.035 and 0.244 for 1141030_g690672908
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 1141030_g690672908.
Acceptable entries have no ID, XRT distances < 15", 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=41.3380 (02:45:21.12) DEC=43.1900 (+43:11:24.0)
XRT distances are from RA=41.3388 (02:45:21.31) DEC=43.2431 (+43:14:35.3)
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
There are 14983.592 counts in the bkg source region of 5979.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 2.506 counts/pixel (5-sig UL in 4" is 19.97 mag) for 1141030_g690672908
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 20.52, XRT distances < 15",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 1141030_690672908_221121d19h22m00s877628usUT_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(41.3389,43.2075,45")
fk5;-circle(41.3344969472273,43.2028660526614,6")
fk5;-circle(41.3265941856064,43.210332046661,6")
fk5;-circle(41.3308645969803,43.2125480727715,6")
image paragraph message for exposure 1 of trigger 1141030
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: no overlap
SRCLIST PROBLEM: srclist filled telemetry buffer
See notes for more details.
------ Start for Possible Stand-alone Circular ----
In response to GRB221120 (Swift/BAT trigger 1141030) at 21:31:10 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
207 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 18.0 mag. No correction has been made for the expected extinction
corresponding to E(B-V) of 0.093.
------- notes for trigger 1141030 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 221121d19h22m05s784725usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1141030
-expid=690672908 -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/1141030/
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.
*** Warning -- BAT and XRT error circles do NOT overlap.
UVOT exposure began at MET 690672908.9327 or about 2022:324:21:35:03 UT
Found 1952 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 15% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 40 srclist
source(s) without IDs. There are 0 good candidate(s) in the srclist catalog.
Good candidates must be brighter than 18.12 mag.
Found 15 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 20.52 mag. Found 175 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
16% of the Genie image region.
Genie image analysis:
Found 14983.6 counts in the large background region of 5979.0 pixels or a rate
of 2.506 counts/pixel in a radius of 45.0 arcsec. Based on this background, the
typical 5-sigma UL at a random point in the Genie image is 19.79 mag. for a
4-arcsec aperture. The number of srclist sources filled the available
telemetry. The weakest source detected was 18.67 mag. The closest srclist
source has ra= 41.3362 dec= 43.2515 mag=18.67 sep=30.78". The closest Genie
source has ra= 41.3190 dec= 43.2266 mag=16.75 sep=79.05".
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?
690672908 207 U srclist found no candidates.
690672908 207 U image found no candidates.
List afterglow candidates for other finding charts.
690672696 ???? WHITE srclist found no candidates.
690672696 ???? WHITE image found no candidates.
690673461 760 WHITE srclist found no candidates.
690673461 760 WHITE image found no candidates.
------- Tokens for Quick GCN -------