image overlap message for exposure 1 of trigger 1202386
uvot_overlap.pl vrs. 2010-12-20b fem started at 231215d00h54m52s982115usUT
The observation of trigger 1202386 started 2023-12-14T20:32:23.2
Examining file ./1202386_g474_uvot_sky_image.fits
The exposure ID is 724278743
The exposure time is 38.817 (seconds)
The filter is WHITE.
The uvot region is centered at (305.7120,-72.4345) with a roll angle of 308.8
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 (305.7360,-72.4360) with a radius of 3.000 arc min
This is 0.444 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 (305.6853,-72.4328) with a radius of 0.037 arc min
This is 0.494 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 1202386
find_uvot_ag.pl vrs. 2023-04-25a fem started at 231215d00h54m56s029076usUT
Observation start time is 2023-12-14T20:32:23.2
Examining file ./1202386_g474_uvot_catalog_image.fits
The exposure ID is 724278743
The exposure is 38.817 sec.
The bin size is 2 pixels
The filter is WHITE
There are 15 detected source(s) for 1202386_g474
Aspect correction adds -0.00710 degrees (-1.704 sec of time = -7.69 arc sec) to RA
Aspect correction adds 0.00065 degrees ( 2.35 arcsec) to Dec
Total aspect correction is 8.04 arcsec
Star catalogs centered at 305.7161 , -72.4370 with radius 2.78 arc min.
n_usno: 154 n_gsc: 97
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 15 matched entries is 0.567" for 1202386_g474
Mean and std. dev of mag. difference (MAG_DELTA) are 0.919 and 0.314 for 1202386_g474
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 1202386_g474.
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=305.7360 (20:22:56.64) DEC=-72.4360 (-72:26:09.6)
XRT distances are from RA=305.6853 (20:22:44.47) DEC=-72.4328 (-72:25:58.2)
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
There are 15627.218 counts in the bkg source region of 5978.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 2.614 counts/pixel (5-sig UL in 4" is 19.36 mag) for 1202386_g474
There are 520.60260 counts in the xrt source region of 200.00000 pixels.
Rate in xrt region with 8 arcsec radius is 2.603 counts/pixel for 1202386_g474
There are 3081.6311 counts in the xrt_bkg source region of 1162.0000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 2.652 counts/pixel (5-sig UL in 4" is 19.35 mag) for 1202386_g474
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 19.92, 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: 1202386_724278743_231215d00h54m56s029076usUT_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(305.7120,-72.4345,45")
fk5;-circle(305.73228041063,-72.4385310420596,6")
fk5;-circle(305.711376914682,-72.4274803309459,6")
fk5;-circle(305.711192213616,-72.4481263256893,6")
fk5;-circle(305.687219216645,-72.438929383971,6")
Region file: 1202386_724278743_231215d00h54m56s029076usUT_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(305.68529,-72.43283,8")
Region file: 1202386_724278743_231215d00h54m56s029076usUT_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(305.68529,-72.43283,25")
fk5;-circle(305.68529,-72.43283,15")
fk5;-circle(305.687219216645,-72.438929383971,6")
image paragraph message for exposure 1 of trigger 1202386
------ Start for Possible Stand-alone Circular ----
In response to GRB231214 (Swift/BAT trigger 1202386) at 20:24:28 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 39 seconds with the White filter
starting 442 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 1202386 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 231215d00h54m59s927961usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1202386
-expid=724278743 -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/1202386/
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 724278743.17682 or about 2023:348:20:32:18 UT
Found 681 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 14% of the srclist region. Found 43 sources in
srclist catalog. Found 2 srclist source(s) without IDs. There are 0 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
18.49 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 19.92 mag. Found 150 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
13% of the Genie image region.
Genie image analysis:
Found 15627.2 counts in the large background region of 5978.0 pixels or a rate
of 2.614 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 19.19 mag. for a
4-arcsec aperture.
Found 520.6 counts in the XRT position region of 200.0 pixels or a rate of
2.603 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is -0.251 +/- 0.634 (1-sigma) cps. The
3-sigma UL at the XRT position is 1.903 cps or 18.91 mag. The closest srclist
source has ra= 305.6879 dec= -72.4389 mag=19.32 sep=22.10". The closest Genie
source has ra= 305.6872 dec= -72.4389 mag=16.80 sep=22.06".
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?
724278743 442 WHITE srclist found no candidates.
724278743 442 WHITE image found no candidates.
List afterglow candidates for other finding charts.
724282263 3962 WHITE srclist found no candidates.
724282263 3962 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: -72.43283
GRB_ERROR: 5.5
GRB_RA: 305.68529
IMAGE_START_TIME: 20:32:18
MAGNITUDE: 18.9
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT