image overlap message for exposure 1 of trigger 1199764
uvot_overlap.pl vrs. 2010-12-20b fem started at 231129d21h05m34s287519usUT
The observation of trigger 1199764 started 2023-11-29T05:08:31.8
Examining file ./1199764_g151_uvot_sky_image.fits
The exposure ID is 722927311
The exposure time is 149.857 (seconds)
The filter is WHITE.
The uvot region is centered at (317.5360,41.5176) with a roll angle of 242.8
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 (317.5360,41.5440) with a radius of 3.000 arc min
This is 1.585 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 7.03 sq. arc min or 0.25 of the BAT error circle
The XRT error circle is centered at (317.5438,41.5221) with a radius of 0.037 arc min
This is 0.440 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 1199764
find_uvot_ag.pl vrs. 2023-04-25a fem started at 231129d21h05m36s937753usUT
Observation start time is 2023-11-29T05:08:31.8
Examining file ./1199764_g151_uvot_catalog_image.fits
The exposure ID is 722927311
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 16 detected source(s) for 1199764_g151
Aspect correction adds -0.00409 degrees (-0.983 sec of time = -11.04 arc sec) to RA
Aspect correction adds -0.00267 degrees (-9.62 arcsec) to Dec
Total aspect correction is 14.64 arcsec
Star catalogs centered at 317.5406 , 41.5169 with radius 2.42 arc min.
n_usno: 223 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 15 matched entries is 0.533" for 1199764_g151
Mean and std. dev of mag. difference (MAG_DELTA) are 1.494 and 0.220 for 1199764_g151
Found 1 entries without IDs and 1 entries that are acceptable afterglow candidates for 1199764_g151.
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=317.5360 (21:10:08.64) DEC=41.5440 (+41:32:38.4)
XRT distances are from RA=317.5438 (21:10:10.51) DEC=41.5221 (+41:31:19.4)
-----------------
Entry 7 in the list of sources is a candidate afterglow for 1199764_g151 with genie
ra=317.56525 (21:10:15.66) dec=41.53093 (+41:31:51.3) +/- 0.6" mag=18.74+/-0.15
dist=66.1 REFID=4 major=0.8 minor=0.5 flag=16 (aperture_incomplete)
*** The position of this source is inconsistent with the XRT position.
The position is 91.8 arc sec from the BAT position.
This source is near the edge of image (0.964)
Found 2 entries in star catalog(s) within 20.0" of the candidate.
printing all entries
(Entries within 2 arc sec of a source list entry are considered a match)
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
317.5644 41.5266 15.6 -1 USNO-B1 20.20 19.05 19.56
317.5663 41.5307 3.0 -1 USNO-B1 17.17 14.64 15.76 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 5.25" or brighter than 12 mag
Found 3 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
317.5453 41.5198 9.2 -1 USNO-B1 19.34 17.00 18.03
317.5415 41.5218 6.3 -1 USNO-B1 99.99 18.56 99.99
317.5417 41.5235 7.7 -1 USNO-B1 99.99 18.77 99.99
The closest star is 6.26" away.
List UVOT sources within 10" of the XRT position:
Matched source ra=317.54566 (21:10:10.96) dec=41.51968 (+41:31:10.8) +/- 0.7" mag=19.46+/-0.16 dist=10.0 REFID=11 flag=2
There are 60350.090 counts in the bkg source region of 5739.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 10.516 counts/pixel (5-sig UL in 4" is 20.07 mag) for 1199764_g151
There are 2142.2961 counts in the xrt source region of 200.00000 pixels.
Rate in xrt region with 8 arcsec radius is 10.711 counts/pixel for 1199764_g151
There are 11857.811 counts in the xrt_bkg source region of 1095.0000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 10.829 counts/pixel (5-sig UL in 4" is 20.06 mag) for 1199764_g151
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 20.63, 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: 1199764_722927311_231129d21h05m36s937753usUT_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(317.5360,41.5176,45")
fk5;-circle(317.545664212312,41.5196779044849,6")
fk5;-circle(317.544652696748,41.5260120613229,6")
fk5;-circle(317.547064727777,41.5269685921884,6")
fk5;-circle(317.533271943919,41.517663017609,6")
fk5;-circle(317.540399829046,41.5041459005068,6")
fk5;-circle(317.527917261907,41.5087768202929,6")
fk5;-circle(317.532920603944,41.5054704831097,6")
fk5;-circle(317.519301414628,41.5223040554378,6")
Region file: 1199764_722927311_231129d21h05m36s937753usUT_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(317.54379,41.52206,8")
Region file: 1199764_722927311_231129d21h05m36s937753usUT_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(317.54379,41.52206,25")
fk5;-circle(317.54379,41.52206,15")
fk5;-circle(317.545664212312,41.5196779044849,6")
fk5;-circle(317.544652696748,41.5260120613229,6")
fk5;-circle(317.547064727777,41.5269685921884,6")
fk5;-circle(317.55408144188,41.524542944547,6")
image paragraph message for exposure 1 of trigger 1199764
WARNING -- because of the LARGE EXTINCTION, results should be used cautiously.
1 source(s) near the XRT position were rejected as afterglow candidate(s). See
notes for details.
------ Start for Possible Stand-alone Circular ----
In response to GRB231129 (Swift/BAT trigger 1199764) at 05:05:59 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 120 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.
Results from the list of sources generated on-board are not available at this
time. No correction has been made for the large, but uncertain, extinction
expected.
------- notes for trigger 1199764 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 231129d21h06m09s160897usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1199764
-expid=722927311 -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/1199764/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
Unreliable extinction found for xrt position. XRT position found for Genie
image. BAT position found.
UVOT exposure began at MET 722927311.81166 or about 2023:333:05:08:26 UT
No information found about the number of stars in the star catalog for srclist
region.
Found 16 source(s) in Genie image catalog. 1 source(s) are within 10.0" of the
xrt position. Found 1 Genie image source(s) without IDs. There are 0 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
20.63 mag. Found 219 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 25% of the Genie image region.
Genie image analysis:
Found 60350.1 counts in the large background region of 5739.0 pixels or a rate
of 10.516 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 19.90 mag. for a
4-arcsec aperture.
Found 2142.3 counts in the XRT position region of 200.0 pixels or a rate of
10.712 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is -0.157 +/- 0.336 (1-sigma) cps. The
3-sigma UL at the XRT position is 1.008 cps or 19.60 mag.
Found 1 Genie source(s) within 10.0" of the XRT position. The brightest such
source has ra= 317.5457 dec= 41.5197 mag=19.46 sep=9.95". The closest Genie
source has ra= 317.5457 dec= 41.5197 mag=19.46 sep=9.95".
Report rejected UVOT sources within 10 arcsec XRT position.
Such sources are usually NOT the afterglow.
****THIS SOURCE NEAR XRT POSITION WAS REJECTED--USE WITH CAUTION****
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 120 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 21:10:10.96 = 317.54566
DEC(J2000) = +41:31:10.8 = 41.51968
with a 90%-confidence error radius of about 0.66 arc sec. This position is 9.95
arc sec. from the center of the XRT error circle. The estimated magnitude is
19.46 with a 1-sigma error of about 0.16. No correction has been made for the
large, but uncertain, extinction expected.
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?
722927311 119 WHITE srclist data are not available.
722927311 119 WHITE image found no candidates.
List afterglow candidates for other finding charts.
722927524 332 ? srclist data are not available.
722927524 332 U image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 41.52206
GRB_ERROR: 5.5
GRB_RA: 317.54379
IMAGE_START_TIME: 05:08:26
MAGNITUDE: 19.6
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT