image overlap message for exposure 2 of trigger 1274039
uvot_overlap.pl vrs. 2010-12-20b fem started at 241213d11h35m11s590905usUT
The observation of trigger 1274039 started 2024-12-13T02:34:06.2
Examining file ./1274039_g905_uvot_sky_image.fits
The exposure ID is 755750046
The exposure time is 73.504 (seconds)
The filter is WHITE.
The uvot region is centered at (116.1792,35.2835) with a roll angle of 78.1
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 (116.1480,35.2800) with a radius of 3.000 arc min
This is 1.544 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 7.00 sq. arc min or 0.25 of the BAT error circle
The XRT error circle is centered at (116.1700,35.2788) with a radius of 0.057 arc min
This is 0.531 arc min from the center of the uvot region
The area of the XRT error circle is 0.010 sq. arc min
The UVOT/XRT overlap is 0.010 sq. arc min or 1.00 of the XRT error circle
image afterglow message for exposure 2 of trigger 1274039
find_uvot_ag.pl vrs. 2023-04-25a fem started at 241213d11h35m26s112954usUT
Observation start time is 2024-12-13T02:34:06.2
Examining file ./1274039_g905_uvot_catalog_image.fits
The exposure ID is 755750046
The exposure is 73.504 sec.
The bin size is 2 pixels
The filter is WHITE
There are 5 detected source(s) for 1274039_g905
Aspect correction adds 0.00151 degrees (0.362 sec of time = 4.44 arc sec) to RA
Aspect correction adds -0.00044 degrees (-1.60 arcsec) to Dec
Total aspect correction is 4.72 arcsec
Star catalogs centered at 116.1759 , 35.2833 with radius 2.45 arc min.
n_usno: 57 n_gsc: 59
*** WARNING -- bright star catalog has 2 entries brighter than 12 mag
The brightest has mag 11.05
RA DEC Mag Color
bright star 0: 116.20026 (07:44:48.06) 35.30630 (+35:18:22.7) 11.05 USNO-R
bright star 1: 116.20227 (07:44:48.55) 35.30682 (+35:18:24.6) 11.44 USNO-V
Mean distance difference (CAT_DELTA) for 5 matched entries is 0.391" for 1274039_g905
Mean and std. dev of mag. difference (MAG_DELTA) are 1.197 and 0.584 for 1274039_g905
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 1274039_g905.
Acceptable entries have no ID, XRT distances < 8.5", 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=116.1480 (07:44:35.52) DEC=35.2800 (+35:16:48.0)
XRT distances are from RA=116.1700 (07:44:40.80) DEC=35.2788 (+35:16:43.8)
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
There are 82302.141 counts in the bkg source region of 6246.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 13.177 counts/pixel (5-sig UL in 4" is 19.18 mag) for 1274039_g905
There are 2578.8108 counts in the xrt source region of 195.00000 pixels.
Rate in xrt region with 8 arcsec radius is 13.225 counts/pixel for 1274039_g905
There are 16478.936 counts in the xrt_bkg source region of 1242.0000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 13.268 counts/pixel (5-sig UL in 4" is 19.17 mag) for 1274039_g905
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 19.73, XRT distances < 8.5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 1274039_755750046_241213d11h35m26s112954usUT_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(116.1792,35.2835,45")
fk5;-circle(116.18924977345,35.2742525577334,6")
Region file: 1274039_755750046_241213d11h35m26s112954usUT_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(116.17000,35.27883,8")
Region file: 1274039_755750046_241213d11h35m26s112954usUT_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(116.17000,35.27883,25")
fk5;-circle(116.17000,35.27883,15")
image paragraph message for exposure 2 of trigger 1274039
------ Start for Possible Stand-alone Circular ----
In response to GRB241213 (Swift/BAT trigger 1274039) at 02:19:00 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 74 seconds with the White filter
starting 871 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 19.6 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
0.060.
------- notes for trigger 1274039 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 241213d11h35m32s456761usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1274039
-expid=755750046 -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/1274039/
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 755750046.20866 or about 2024:348:02:34:01 UT
Found 690 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 5% of the srclist region. Found 70 sources in
srclist catalog. Found 7 srclist source(s) without IDs. There are 0 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
18.83 mag.
Found 5 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 19.73 mag. Found 59 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 6% of the
Genie image region.
Genie image analysis:
Found 82302.1 counts in the large background region of 6246.0 pixels or a rate
of 13.177 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 19.01 mag. for a
4-arcsec aperture.
Found 2578.8 counts in the XRT position region of 195.0 pixels or a rate of
13.225 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is -0.114 +/- 0.738 (1-sigma) cps. The
3-sigma UL at the XRT position is 2.215 cps or 18.74 mag. The closest srclist
source has ra= 116.1564 dec= 35.2763 mag=16.26 sep=40.97". The closest Genie
source has ra= 116.1565 dec= 35.2762 mag=14.69 sep=40.65".
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?
755750046 871 WHITE srclist found no candidates.
755750046 871 WHITE image found no candidates.
List afterglow candidates for other finding charts.
755749493 318 U srclist found no candidates.
755749493 318 U image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 35.27883
GRB_ERROR: 8.5
GRB_RA: 116.17000
IMAGE_START_TIME: 02:34:01
MAGNITUDE: 18.7
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT