image overlap message for exposure 1 of trigger 1205899
uvot_overlap.pl vrs. 2010-12-20b fem started at 240103d10h06m37s948319usUT
The observation of trigger 1205899 started 2024-01-02T17:40:21.8
Examining file ./1205899_g725910021_uvot_sky_image.fits
The exposure ID is 725910021
The exposure time is 249.935 (seconds)
The filter is U.
The uvot region is centered at (96.8415,-20.0450) with a roll angle of 188.1
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 (96.8380,-20.0410) with a radius of 3.000 arc min
This is 0.311 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 (96.8393,-20.0410) with a radius of 0.037 arc min
This is 0.273 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 0.004 sq. arc min or 1.00 of the XRT error circle
image afterglow message for exposure 1 of trigger 1205899
find_uvot_ag.pl vrs. 2023-04-25a fem started at 240103d10h06m45s221425usUT
Observation start time is 2024-01-02T17:40:21.8
Examining file ./1205899_g725910021_uvot_catalog_image.fits
The exposure ID is 725910021
The exposure is 249.935 sec.
The bin size is 2 pixels
The filter is U
There are 14 detected source(s) for 1205899_g725910021
Aspect correction adds -0.00224 degrees (-0.538 sec of time = -7.58 arc sec) to RA
Aspect correction adds -0.00158 degrees (-5.67 arcsec) to Dec
Total aspect correction is 9.47 arcsec
Star catalogs centered at 96.8412 , -20.0319 with radius 2.99 arc min.
n_usno: 160 n_gsc: 186
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 14 matched entries is 0.614" for 1205899_g725910021
Mean and std. dev of mag. difference (MAG_DELTA) are -0.546 and 0.408 for 1205899_g725910021
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 1205899_g725910021.
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=96.8380 (06:27:21.12) DEC=-20.0410 (-20:02:27.6)
XRT distances are from RA=96.8393 (06:27:21.43) DEC=-20.0410 (-20:02:27.5)
Found 2 entries in star catalog(s) within 10" of the XRT position.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
96.8382 -20.0431 8.5 -1 USNO-B1 21.13 20.70 20.89
96.8382 -20.0430 8.3 -1 GSC2.3 19.64 21.22 99.99
The closest star is 8.32" away.
List UVOT sources within 10" of the XRT position:
There are 16919.576 counts in the bkg source region of 5735.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 2.950 counts/pixel (5-sig UL in 4" is 19.88 mag) for 1205899_g725910021
There are 444.67368 counts in the xrt source region of 199.00000 pixels.
Rate in xrt region with 8 arcsec radius is 2.235 counts/pixel for 1205899_g725910021
There are 2963.5195 counts in the xrt_bkg source region of 1179.0000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 2.514 counts/pixel (5-sig UL in 4" is 19.96 mag) for 1205899_g725910021
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 20.43, 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: 1205899_725910021_240103d10h06m45s221425usUT_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(96.8415,-20.0450,45")
fk5;-circle(96.8471264190109,-20.035534959061,6")
fk5;-circle(96.83149588634,-20.0455297350298,6")
fk5;-circle(96.8438089366104,-20.0459865985703,6")
fk5;-circle(96.8504014010599,-20.0417908097979,6")
fk5;-circle(96.8538001443797,-20.0383945320631,6")
fk5;-circle(96.8489354523654,-20.0487292616469,6")
Region file: 1205899_725910021_240103d10h06m45s221425usUT_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(96.83929,-20.04097,8")
Region file: 1205899_725910021_240103d10h06m45s221425usUT_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(96.83929,-20.04097,25")
fk5;-circle(96.83929,-20.04097,15")
fk5;-circle(96.8438089366104,-20.0459865985703,6")
image paragraph message for exposure 1 of trigger 1205899
------ Start for Possible Stand-alone Circular ----
In response to GRB240102 (Swift/BAT trigger 1205899) at 17:38:07 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
101 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 100% of the
XRT error circle. The typical 3-sigma upper limit has been about 19.2 mag.
Results from the list of sources generated on-board are not available at this
time. No correction has been made for the expected extinction corresponding to
E(B-V) of 0.175.
------- notes for trigger 1205899 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 240103d10h06m47s965636usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1205899
-expid=725910021 -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/1205899/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
XRT position found for Genie image. BAT position found.
UVOT exposure began at MET 725910021.84036 or about 2024:002:17:40:16 UT
No information found about the number of stars in the star catalog for srclist
region.
Found 14 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 20.43 mag. Found 186 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
14% of the Genie image region.
Genie image analysis:
Found 16919.6 counts in the large background region of 5735.0 pixels or a rate
of 2.950 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 19.69 mag. for a
4-arcsec aperture.
Found 444.7 counts in the XRT position region of 199.0 pixels or a rate of
2.235 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is -0.222 +/- 0.092 (1-sigma) cps. The
3-sigma UL at the XRT position is 0.276 cps or 19.55 mag. The closest Genie
source has ra= 96.8438 dec= -20.0460 mag=17.44 sep=23.66".
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?
725910021 101 U srclist data are not available.
725910021 101 U image found no candidates.
List afterglow candidates for other finding charts.
725909863 ???? WHITE srclist found no candidates.
725909863 ???? WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: u
GRB_DEC: -20.04097
GRB_ERROR: 5.5
GRB_RA: 96.83929
IMAGE_START_TIME: 17:40:16
MAGNITUDE: 19.6
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT