image overlap message for exposure 1 of trigger 1191994
uvot_overlap.pl vrs. 2010-12-20b fem started at 230914d08h32m45s837907usUT
The observation of trigger 1191994 started 2023-09-14T08:28:47.9
Examining file 1191994_g1007_uvot_sky_image.fits
The exposure ID is 716372927
The exposure time is 25.282 (seconds)
The filter is WHITE.
The uvot region is centered at (263.4096,-15.6330) with a roll angle of 272.9
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 (263.4180,-15.6320) with a radius of 3.000 arc min
This is 0.490 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
Could not find the location of an XRT error circle
image afterglow message for exposure 1 of trigger 1191994
find_uvot_ag.pl vrs. 2023-04-25a fem started at 230914d08h32m47s044553usUT
Observation start time is 2023-09-14T08:28:47.9
Examining file 1191994_g1007_uvot_catalog_image.fits
The exposure ID is 716372927
The exposure is 25.282 sec.
The bin size is 2 pixels
The filter is WHITE
There are 24 detected source(s) for 1191994_g1007
Aspect correction adds -0.00078 degrees (-0.187 sec of time = -2.70 arc sec) to RA
Aspect correction adds -0.00010 degrees (-0.35 arcsec) to Dec
Total aspect correction is 2.72 arcsec
Star catalogs centered at 263.4146 , -15.6336 with radius 2.51 arc min.
n_usno: 1104 n_gsc: 808
Bright star catalog has no entries brighter than 12 mag
*** WARNING -- no XRT distances are available.
Mean distance difference (CAT_DELTA) for 29 matched entries is 0.762" for 1191994_g1007
Mean and std. dev of mag. difference (MAG_DELTA) are 1.910 and 0.787 for 1191994_g1007
Found 1 entries without IDs and 1 entries that are acceptable afterglow candidates for 1191994_g1007.
Acceptable entries have no ID, BAT distance < 200" or XRT distance < 10", 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=263.4180 (17:33:40.32) DEC=-15.6320 (-15:37:55.2)
XRT distances are as reported in catalog file.
-----------------
Entry 11 in the list of sources is a candidate afterglow for 1191994_g1007 with genie
ra=263.43551 (17:33:44.52) dec=-15.63297 (-15:37:58.7) +/- 0.8" mag=18.75+/-0.21
dist=60.8 REFID=17 major=1.2 minor=0.6 flag=0
This source is near the edge of image (0.948)
Found 33 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
263.4315 -15.6312 15.5 -1 USNO-B1 18.79 18.03 18.37
263.4320 -15.6350 14.2 -1 USNO-B1 18.86 17.90 18.33
263.4320 -15.6313 13.7 -1 USNO-B1 20.48 20.19 20.32
263.4324 -15.6293 17.1 -1 USNO-B1 20.45 19.60 19.98
263.4337 -15.6354 10.8 -1 USNO-B1 19.94 18.71 19.26
263.4341 -15.6338 5.6 -1 USNO-B1 17.58 16.62 17.05
263.4344 -15.6313 7.2 -1 USNO-B1 20.30 19.43 19.82
263.4349 -15.6368 13.9 -1 USNO-B1 18.75 17.46 18.03
263.4359 -15.6362 11.8 -1 USNO-B1 18.20 16.73 17.38
263.4361 -15.6331 2.2 -1 USNO-B1 16.33 15.25 15.73 *
263.4354 -15.6276 19.3 -1 USNO-B1 21.19 20.33 20.71
263.4366 -15.6353 9.3 -1 USNO-B1 20.61 18.66 19.53
263.4366 -15.6313 7.1 -1 USNO-B1 16.70 99.99 99.99
263.4369 -15.6315 7.0 -1 USNO-B1 17.11 14.96 15.91
263.4385 -15.6353 13.3 -1 USNO-B1 19.53 19.55 19.54
263.4392 -15.6358 16.4 -1 USNO-B1 17.09 16.13 16.56
263.4391 -15.6297 17.1 -1 USNO-B1 16.25 14.91 15.50
263.4403 -15.6320 16.9 -1 USNO-B1 20.64 99.99 99.99
263.4410 -15.6321 19.3 -1 USNO-B1 15.54 14.46 14.94
263.4314 -15.6311 15.7 -1 GSC2.3 18.19 19.23 99.99
263.4319 -15.6350 14.4 -1 GSC2.3 17.90 19.13 99.99
263.4324 -15.6294 16.9 -1 GSC2.3 19.01 20.61 99.99
263.4336 -15.6353 10.9 -1 GSC2.3 18.69 20.31 99.99
263.4341 -15.6337 5.7 -1 GSC2.3 17.29 18.40 17.74
263.4343 -15.6313 7.4 -1 GSC2.3 19.06 20.81 99.99
263.4347 -15.6370 14.7 -1 GSC2.3 18.21 19.79 99.99
263.4359 -15.6332 1.5 -1 GSC2.3 16.17 16.74 16.91 *
263.4352 -15.6276 19.2 -1 GSC2.3 19.28 21.50 99.99
263.4359 -15.6361 11.5 -1 GSC2.3 17.08 18.53 17.85
263.4368 -15.6314 7.3 -1 GSC2.3 16.48 17.02 17.30
263.4391 -15.6359 16.3 -1 GSC2.3 17.31 17.12 99.99
263.4390 -15.6298 16.6 -1 GSC2.3 15.63 16.41 16.33
263.4411 -15.6322 19.6 -1 GSC2.3 15.42 15.96 16.26
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 5.25" or brighter than 12 mag
There are 16590.184 counts in the bkg source region of 5539.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 2.995 counts/pixel (5-sig UL in 4" is 18.82 mag) for 1191994_g1007
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 18.82, BAT distances < 200",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 1191994_716372927_230914d08h32m47s044553usUT_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(263.4096,-15.6330,45")
fk5;-circle(263.420065886931,-15.6314078191507,6")
fk5;-circle(263.413289038983,-15.6302878995376,6")
fk5;-circle(263.412977165686,-15.6262134465268,6")
fk5;-circle(263.414986102035,-15.6412010507431,6")
fk5;-circle(263.402540082467,-15.6323774263877,6")
fk5;-circle(263.402764636188,-15.6387771795525,6")
fk5;-circle(263.399945482322,-15.6260018570158,6")
image paragraph message for exposure 1 of trigger 1191994
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: high density of stars, partial overlap
SRCLIST PROBLEM: no srclist afterglow info
See notes for more details.
------ Start for Possible Stand-alone Circular ----
In response to GRB230914 (Swift/BAT trigger 1191994) at 08:11:59 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 25 seconds with the White filter
starting 975 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 25% of
the BAT error circle. Because of the density of catalogued stars, further
analysis is required to report an upper limit for any afterglow in the
sub-image. 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 0.386.
------- notes for trigger 1191994 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 230914d08h32m50s426034usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1191994
-expid=716372927 -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/1191994/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
No XRT position found for Genie image. BAT position found.
UVOT exposure began at MET 716372927.85226 or about 2023:257:08:28:42 UT
No information found about the number of stars in the star catalog for srclist
region.
Found 24 source(s) in Genie image catalog. 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 18.82 mag. Found 1100 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
121% of the Genie image region.
Genie image analysis:
Found 16590.2 counts in the large background region of 5539.0 pixels or a rate
of 2.995 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 18.63 mag. for a
4-arcsec aperture.
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?
716372927 975 WHITE srclist data are not available.
716372927 975 WHITE image found no candidates.
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------