image overlap message for exposure 2 of trigger 1263718
uvot_overlap.pl vrs. 2010-12-20b fem started at 241030d10h59m49s596809usUT
The observation of trigger 1263718 started 2024-10-30T05:53:33.0
Examining file ./1263718_g328_uvot_sky_image.fits
The exposure ID is 751960412
The exposure time is 249.946 (seconds)
The filter is U.
The uvot region is centered at (343.1083,80.4517) with a roll angle of 305.8
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 (343.0330,80.4390) with a radius of 3.000 arc min
This is 1.068 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 (343.1388,80.4499) with a radius of 0.037 arc min
This is 0.322 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 2 of trigger 1263718
find_uvot_ag.pl vrs. 2023-04-25a fem started at 241030d11h00m10s713724usUT
Observation start time is 2024-10-30T05:53:33.0
Examining file ./1263718_g328_uvot_catalog_image.fits
The exposure ID is 751960412
The exposure is 249.946 sec.
The bin size is 2 pixels
The filter is U
There are 4 detected source(s) for 1263718_g328
Aspect correction adds -0.00122 degrees (-0.293 sec of time = -0.73 arc sec) to RA
Aspect correction adds 0.00125 degrees ( 4.50 arcsec) to Dec
Total aspect correction is 4.56 arcsec
Star catalogs centered at 343.1353 , 80.4502 with radius 2.03 arc min.
n_usno: 110 n_gsc: 77
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 11.8692
RA DEC Mag Color
bright star 0: 343.10626 (22:52:25.50) 80.43473 (+80:26:05.0) 11.87 USNO-V
Mean distance difference (CAT_DELTA) for 3 matched entries is 0.587" for 1263718_g328
Mean and std. dev of mag. difference (MAG_DELTA) are 1.794 and 0.028 for 1263718_g328
Found 1 entries without IDs and 1 entries that are acceptable afterglow candidates for 1263718_g328.
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.
0 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=343.0330 (22:52:07.92) DEC=80.4390 (+80:26:20.4)
XRT distances are from RA=343.1388 (22:52:33.30) DEC=80.4499 (+80:26:59.6)
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1263718_g328 with genie
ra=343.14015 (22:52:33.64) dec=80.44996 (+80:26:59.9) +/- 0.7" mag=12.71+/-0.14
dist=0.9 REFID=3 major=0.9 minor=0.9 flag=0
Found 4 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
343.1301 80.4504 6.2 -1 USNO-B1 22.06 19.82 20.81
343.1183 80.4496 13.1 -1 USNO-B1 99.99 19.36 99.99
343.1306 80.4507 6.3 -1 GSC2.3 20.49 99.99 99.99
343.1128 80.4488 16.9 -1 GSC2.3 20.00 99.99 99.99
uvot_check_outside found 13 of 13 good pixels
##### This source remains a candidate #####
It has no entries within 3.5" or brighter than 12 mag
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
343.1301 80.4504 5.4 -1 USNO-B1 22.06 19.82 20.81
343.1306 80.4507 5.7 -1 GSC2.3 20.49 99.99 99.99
The closest star is 5.44" away.
List UVOT sources within 10" of the XRT position:
Unmatched source ra=343.14015 (22:52:33.64) dec=80.44996 (+80:26:59.9) +/- 0.7" mag=12.71+/-0.14 dist=0.9 REFID=3 flag=0
There are 15475.585 counts in the bkg source region of 6202.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 2.495 counts/pixel (5-sig UL in 4" is 19.97 mag) for 1263718_g328
There are 15315.160 counts in the src source region of 50.000000 pixels.
Rate in src region with 4 arcsec radius is 306.303 counts/pixel for 1263718_g328
There are 3838.3589 counts in the cand_src_bkg source region of 1247.0000 pixels.
Rate in cand_src_bkg region from 15 to 25 arcsec is 3.078 counts/pixel (5-sig UL in 4" is 19.85 mag) for 1263718_g328
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 20.52, XRT distances < 5.5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 1 good candidate(s) found.
Region file: 1263718_751960412_241030d11h00m10s713724usUT_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(343.1083,80.4517,45")
fk5;-circle(343.140147088304,80.4499623828687,6")
Region file: 1263718_751960412_241030d11h00m10s713724usUT_cand_src.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(343.140147088304,80.4499623828687,4")
Region file: 1263718_751960412_241030d11h00m10s713724usUT_cand_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(343.140147088304,80.4499623828687,25")
fk5;-circle(343.140147088304,80.4499623828687,15")
image paragraph message for exposure 2 of trigger 1263718
------ Start for Possible Stand-alone Circular ----
In response to GRB241030 (Swift/BAT trigger 1263718) at 05:48:03 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
295 seconds after the BAT trigger. There is a candidate afterglow in the
rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 22:52:33.64 = 343.14015
DEC(J2000) = +80:26:59.9 = 80.44996
with a 90%-confidence error radius of about 0.74 arc sec. This position is 0.9
arc sec. from the center of the XRT error circle. The estimated magnitude is
12.71 with a 1-sigma error of about 0.14. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.131.
------- notes for trigger 1263718 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 241030d11h00m15s920199usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1263718
-expid=751960412 -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/1263718/
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 751960412.98752 or about 2024:304:05:53:27 UT
Found 871 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 16% of the srclist region. Found 115 sources in
srclist catalog. Found 58 srclist source(s) without IDs. There are 1 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
18.12 mag.
Found 4 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 1 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
20.52 mag. Found 106 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 17% of the Genie image region.
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?
751960412 294 U 343.13970 80.45002 13.31/18.1 0.7 srclist Yes
751960412 294 U 343.14688 80.45018 18.42/18.1 5.0 srclist Yes
751960412 294 U 343.14015 80.44996 12.71/20.5 0.9 image Yes
List afterglow candidates for other finding charts.
751960200 82 WHITE 343.13972 80.45001 15.87/19.2 0.7 srclist Yes
751960200 82 WHITE 343.13987 80.44996 15.42/20.9 0.7 image Yes
751960991 873 WHITE 343.13946 80.44996 *15.0/19.2 6.3 srclist Yes
751960991 873 WHITE 343.13967 80.44982 14.50/20.4 5.8 image Yes
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: u
GRB_DEC: 80.44996
GRB_ERROR: 0.74
GRB_RA: 343.14015
IMAGE_START_TIME: 05:53:27
MAGNITUDE: 12.71
MAG_ERROR: 0.14
MESSAGE_TYPE: ACK
SOURCE: XRT