image overlap message for exposure 1 of trigger 1262165
uvot_overlap.pl vrs. 2010-12-20b fem started at 241025d09h24m54s517548usUT
The observation of trigger 1262165 started 2024-10-25T01:39:30.7
Examining file ./1262165_g159_uvot_sky_image.fits
The exposure ID is 751513170
The exposure time is 149.669 (seconds)
The filter is WHITE.
The uvot region is centered at (333.5991,83.5795) with a roll angle of 302.0
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 (333.3300,83.5660) with a radius of 3.000 arc min
This is 1.980 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 6.05 sq. arc min or 0.21 of the BAT error circle
The XRT error circle is centered at (333.6577,83.5759) with a radius of 0.037 arc min
This is 0.450 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 1262165
find_uvot_ag.pl vrs. 2023-04-25a fem started at 241025d09h24m58s962785usUT
Observation start time is 2024-10-25T01:39:30.7
Examining file ./1262165_g159_uvot_catalog_image.fits
The exposure ID is 751513170
The exposure is 149.669 sec.
The bin size is 2 pixels
The filter is WHITE
There are 8 detected source(s) for 1262165_g159
Aspect correction adds -0.00382 degrees (-0.918 sec of time = -1.54 arc sec) to RA
Aspect correction adds 0.00148 degrees ( 5.34 arcsec) to Dec
Total aspect correction is 5.56 arcsec
Star catalogs centered at 333.5801 , 83.5799 with radius 2.72 arc min.
n_usno: 96 n_gsc: 59
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 5 matched entries is 0.474" for 1262165_g159
Mean and std. dev of mag. difference (MAG_DELTA) are 1.224 and 0.207 for 1262165_g159
Found 4 entries without IDs and 4 entries that are acceptable afterglow candidates for 1262165_g159.
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=333.3300 (22:13:19.20) DEC=83.5660 (+83:33:57.6)
XRT distances are from RA=333.6577 (22:14:37.85) DEC=83.5759 (+83:34:33.2)
*** WARNING 50 per cent of entries have no IDs.
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1262165_g159 with genie
ra=333.65379 (22:14:36.91) dec=83.57565 (+83:34:32.3) +/- 0.6" mag=17.56+/-0.14
dist=1.8 REFID=8 major=0.9 minor=0.8 flag=0
Found 0 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)
uvot_check_outside found 14 of 14 good pixels
##### This source remains a candidate #####
It has no entries within 3.5" or brighter than 12 mag
-----------------
Entry 6 in the list of sources is a candidate afterglow for 1262165_g159 with genie
ra=333.42402 (22:13:41.77) dec=83.59201 (+83:35:31.2) +/- 0.6" mag=18.80+/-0.15
dist=110.4 REFID=4 major=2.1 minor=2.0 flag=2 (blended)
*** The position of this source is inconsistent with the XRT position.
The position is 101.0 arc sec from the BAT position.
This source is near the edge of image (0.911)
Found 7 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
333.4586 83.5954 18.4 -1 USNO-B1 20.90 19.83 20.31
333.4103 83.5926 5.9 -1 USNO-B1 99.99 18.45 99.99
333.4170 83.5948 10.4 -1 USNO-B1 99.99 18.57 99.99
333.3974 83.5949 14.8 -1 USNO-B1 14.11 11.14 12.45 *
333.4098 83.5970 18.8 -1 USNO-B1 99.99 17.96 99.99
333.4592 83.5952 18.2 -1 GSC2.3 20.09 99.99 99.99
333.3974 83.5948 14.8 -1 GSC2.3 11.25 13.71 12.18 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 5.25" or brighter than 12 mag
-----------------
Entry 7 in the list of sources is a candidate afterglow for 1262165_g159 with genie
ra=333.40384 (22:13:36.92) dec=83.58940 (+83:35:21.8) +/- 1.3" mag=21.72+/-0.40
dist=113.0 REFID=5 major=1.2 minor=0.9 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 89.3 arc sec from the BAT position.
This source is near the edge of image (0.859)
Found 3 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
333.4103 83.5926 11.9 -1 USNO-B1 99.99 18.45 99.99
333.3974 83.5949 19.8 -1 USNO-B1 14.11 11.14 12.45 *
333.3974 83.5948 19.8 -1 GSC2.3 11.25 13.71 12.18 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 5.25" or brighter than 12 mag
-----------------
Entry 8 in the list of sources is a candidate afterglow for 1262165_g159 with genie
ra=333.40383 (22:13:36.92) dec=83.59124 (+83:35:28.5) +/- 0.8" mag=20.85+/-0.24
dist=116.0 REFID=3 major=2.0 minor=1.0 flag=2 (blended)
*** The position of this source is inconsistent with the XRT position.
The position is 95.6 arc sec from the BAT position.
This source is near the edge of image (0.931)
Found 5 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
333.4103 83.5926 5.6 -1 USNO-B1 99.99 18.45 99.99
333.4170 83.5948 13.8 -1 USNO-B1 99.99 18.57 99.99
333.3974 83.5949 13.3 -1 USNO-B1 14.11 11.14 12.45 *
333.3825 83.5951 16.5 -1 USNO-B1 99.99 18.54 99.99
333.3974 83.5948 13.3 -1 GSC2.3 11.25 13.71 12.18 *
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 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
Unmatched source ra=333.65379 (22:14:36.91) dec=83.57565 (+83:34:32.3) +/- 0.6" mag=17.56+/-0.14 dist=1.8 REFID=8 flag=0
There are 36393.426 counts in the bkg source region of 6004.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 6.062 counts/pixel (5-sig UL in 4" is 20.37 mag) for 1262165_g159
There are 1650.9510 counts in the src source region of 49.000000 pixels.
Rate in src region with 4 arcsec radius is 33.693 counts/pixel for 1262165_g159
There are 6999.0342 counts in the cand_src_bkg source region of 1143.0000 pixels.
Rate in cand_src_bkg region from 15 to 25 arcsec is 6.123 counts/pixel (5-sig UL in 4" is 20.36 mag) for 1262165_g159
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 20.92, 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: 1262165_751513170_241025d09h24m58s962785usUT_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(333.5991,83.5795,45")
fk5;-circle(333.65379403839,83.5756501335003,6")
fk5;-circle(333.618949429911,83.5799607619376,6")
fk5;-circle(333.573600771506,83.5679774451255,6")
Region file: 1262165_751513170_241025d09h24m58s962785usUT_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(333.65379403839,83.5756501335003,4")
Region file: 1262165_751513170_241025d09h24m58s962785usUT_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(333.65379403839,83.5756501335003,25")
fk5;-circle(333.65379403839,83.5756501335003,15")
fk5;-circle(333.618949429911,83.5799607619376,6")
image paragraph message for exposure 1 of trigger 1262165
------ Start for Possible Stand-alone Circular ----
In response to GRB241025 (Swift/BAT trigger 1262165) at 01:36:50 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 125 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 22:14:36.91 = 333.65379
DEC(J2000) = +83:34:32.3 = 83.57565
with a 90%-confidence error radius of about 0.62 arc sec. This position is 1.8
arc sec. from the center of the XRT error circle. The estimated magnitude is
17.56 with a 1-sigma error of about 0.14. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.250.
------- notes for trigger 1262165 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 241025d09h25m22s719958usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1262165
-expid=751513170 -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/1262165/
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 751513170.67352 or about 2024:299:01:39:25 UT
Found 605 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 9% of the srclist region. Found 58 sources in
srclist catalog. Found 8 srclist source(s) without IDs. There are 1 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
19.22 mag.
Found 8 source(s) in Genie image catalog. 1 source(s) are within 10.0" of the
xrt position. Found 4 Genie image source(s) without IDs. There are 1 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
20.92 mag. Found 92 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 8% 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?
751513170 125 WHITE 333.65326 83.57560 17.86/19.2 2.1 srclist Yes
751513170 125 WHITE 333.65379 83.57565 17.56/20.9 1.8 image Yes
List afterglow candidates for other finding charts.
751513384 339 U srclist found no candidates.
751513384 339 U image found no candidates.
751513919 874 WHITE srclist found no candidates.
751513919 874 WHITE 333.65472 83.57572 21.06/20.9 0.7 image Yes
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 83.57565
GRB_ERROR: 0.62
GRB_RA: 333.65379
IMAGE_START_TIME: 01:39:25
MAGNITUDE: 17.56
MAG_ERROR: 0.14
MESSAGE_TYPE: ACK
SOURCE: XRT