image overlap message for exposure 2 of trigger 1150429
uvot_overlap.pl vrs. 2010-12-20b fem started at 230123d16h45m44s111593usUT
The observation of trigger 1150429 started 2023-01-23T10:25:19.9
Examining file ./1150429_g334_uvot_sky_image.fits
The exposure ID is 696162319
The exposure time is 249.935 (seconds)
The filter is U.
The uvot region is centered at (40.9254,-65.6789) with a roll angle of 256.8
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 (40.9370,-65.6760) with a radius of 3.000 arc min
This is 0.337 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 (40.8584,-65.6865) with a radius of 0.068 arc min
This is 1.715 arc min from the center of the uvot region
The area of the XRT error circle is 0.015 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 2 of trigger 1150429
find_uvot_ag.pl vrs. 2020-10-30 fem started at 230123d16h45m56s897767usUT
Observation start time is 2023-01-23T10:25:19.9
Examining file ./1150429_g334_uvot_catalog_image.fits
The exposure ID is 696162319
The exposure is 249.935 sec.
The bin size is 2 pixels
The filter is U
There are 1 detected source(s) for 1150429_g334
Aspect correction adds -0.00323 degrees (-0.776 sec of time = -4.79 arc sec) to RA
Aspect correction adds -0.00073 degrees (-2.61 arcsec) to Dec
Total aspect correction is 5.46 arcsec
Star catalogs centered at 40.8941 , -65.6663 with radius 2.00 arc min.
n_usno: 36 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 1 matched entries is 0.758" for 1150429_g334
Mean and std. dev of mag. difference (MAG_DELTA) are 0.908 and 0.000 for 1150429_g334
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 1150429_g334.
Acceptable entries have no ID, XRT distances < 10.25", 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=40.9370 (02:43:44.88) DEC=-65.6760 (-65:40:33.6)
XRT distances are from RA=40.8584 (02:43:26.02) DEC=-65.6865 (-65:41:11.3)
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
There are 9397.7178 counts in the bkg source region of 6307.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 1.490 counts/pixel (5-sig UL in 4" is 20.25 mag) for 1150429_g334
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 20.80, XRT distances < 10.25",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 1150429_696162319_230123d16h45m56s897767usUT_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(40.9254,-65.6789,45")
image paragraph message for exposure 2 of trigger 1150429
IMAGE PROBLEM: partial overlap
------ Start for Possible Stand-alone Circular ----
In response to GRB230123 (Swift/BAT trigger 1150429) at 10:19:44 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 859 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 0.17%
of the XRT error circle. The typical 3-sigma upper limit has been about 19.6
mag. 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 0.022.
------- notes for trigger 1150429 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 230123d16h46m11s250282usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1150429
-expid=696162875 -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/1150429/
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 696162875.43408 or about 2023:023:10:34:30 UT
Found 680 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 5% of the srclist region. Found 161 sources in
srclist catalog. Found 74 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 4 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 20.97 mag. Found 41 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 4% of the
Genie image region.
Genie image analysis:
Found 35387.8 counts in the large background region of 6307.0 pixels or a rate
of 5.611 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 20.24 mag. for a
4-arcsec aperture. The closest srclist source has ra= 40.8323 dec= -65.6834
mag=18.61 sep=40.28". The closest Genie source has ra= 40.8984 dec= -65.6622
mag=19.66 sep=105.64".
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?
696162875 859 WHITE srclist found no candidates.
696162875 859 WHITE image found no candidates.
List afterglow candidates for other finding charts.
696162107 91 WHITE srclist found no candidates.
696162107 91 WHITE image found no candidates.
696162319 303 U srclist found no candidates.
696162319 303 U image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: SRCLIST
FILTER: white
GRB_DEC: -65.68647
GRB_ERROR: 10.25
GRB_RA: 40.85842
IMAGE_START_TIME: 10:34:30
MAGNITUDE: 18.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT