image overlap message for exposure 1 of trigger 1236151
uvot_overlap.pl vrs. 2010-12-20b fem started at 260413d19h38m33s593119usUT
The observation of trigger 1236151 started 2024-06-10T07:38:38.9
Examining file 1236151_g121_uvot_sky_image.fits
The exposure ID is 739697918
The exposure time is 149.857 (seconds)
The filter is WHITE.
*** Warning -- found 17004 null pixels in the image.
The uvot region is centered at (117.1287,-67.7509) with a roll angle of 325.2
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 (117.1750,-67.8040) with a radius of 3.000 arc min
This is 3.357 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 at most 0.90 sq. arc min or 0.03 of the BAT error circle
The XRT error circle is centered at (117.1395,-67.7528) with a radius of 0.032 arc min
This is 0.272 arc min from the center of the uvot region
The area of the XRT error circle is 0.003 sq. arc min
The UVOT/XRT overlap is 0.00 sq. arc min or 0.00 of the XRT error circle
image afterglow message for exposure 1 of trigger 1236151
find_uvot_ag.pl vrs. 2023-04-25a fem started at 260413d19h38m34s398225usUT
Observation start time is 2024-06-10T07:38:38.9
Examining file 1236151_g121_uvot_catalog_image.fits
The exposure ID is 739697918
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 2 detected source(s) for 1236151_g121
Aspect correction adds -0.00009 degrees (-0.023 sec of time = -0.13 arc sec) to RA
Aspect correction adds 0.00071 degrees ( 2.55 arcsec) to Dec
Total aspect correction is 2.55 arcsec
Star catalogs centered at 117.1233 , -67.7535 with radius 2.01 arc min.
n_usno: 77 n_gsc: 68
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 10.85
RA DEC Mag Color
bright star 0: 117.12226 (07:48:29.34) -67.78542 (-67:47:07.5) 10.85 USNO-R
Mean distance difference (CAT_DELTA) for 0 matched entries is 0.000" for 1236151_g121
Mean and std. dev of mag. difference (MAG_DELTA) are 0.000 and -1.000 for 1236151_g121
Found 2 entries without IDs and 1 entries that are acceptable afterglow candidates for 1236151_g121.
Acceptable entries have no ID, XRT distances < 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=117.1750 (07:48:42.00) DEC=-67.8040 (-67:48:14.4)
XRT distances are from RA=117.1395 (07:48:33.48) DEC=-67.7528 (-67:45:10.1)
*** WARNING 100 per cent of entries have no IDs.
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1236151_g121 with genie
ra=117.09227 (07:48:22.15) dec=-67.76548 (-67:45:55.7) +/- 0.7" mag=13.69+/-0.14
dist=78.9 REFID=2 major=14.5 minor=11.7 flag=19 (neighbor+blended+aperture_incomplete)
*** The position of this source is inconsistent with the XRT position.
The position is 179.5 arc sec from the BAT position.
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
117.0868 -67.7675 10.5 -1 USNO-B1 16.17 14.65 15.32
117.1033 -67.7651 15.1 -1 GSC2.3 99.99 22.39 99.99
117.0965 -67.7634 9.5 -1 GSC2.3 99.99 22.58 99.99
117.0868 -67.7674 10.3 -1 GSC2.3 14.74 15.88 99.99
*** If XRT position is correct, then this is NOT the afterglow
*** unacceptable major profile of 14.5
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
117.1405 -67.7521 2.7 -1 USNO-B1 99.99 16.43 99.99
117.1404 -67.7521 2.9 -1 GSC2.3 17.11 99.99 99.99
The closest star is 2.73" away.
List UVOT sources within 10" of the XRT position:
There are 16416.738 counts in the bkg source region of 911.00000 pixels.
Rate in bkg region from 0 to 45 arcsec is 18.021 counts/pixel (5-sig UL in 4" is 19.78 mag) for 1236151_g121
There are 0.0000000 counts in the xrt source region of 0.0000000 pixels.
There are 0.0000000 counts in the xrt_bkg source region of 0.0000000 pixels.
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 20.33, XRT distances < 5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 1236151_739697918_260413d19h38m34s398225usUT_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(117.1287,-67.7509,45")
Region file: 1236151_739697918_260413d19h38m34s398225usUT_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(117.13950,-67.75281,8")
Region file: 1236151_739697918_260413d19h38m34s398225usUT_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(117.13950,-67.75281,25")
fk5;-circle(117.13950,-67.75281,15")
image paragraph message for exposure 1 of trigger 1236151
IMAGE PROBLEM: no overlap
------ Start for Possible Stand-alone Circular ----
In response to GRB240610 (Swift/BAT trigger 1236151) at 07:36:36 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 88 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 none of
the XRT error circle. 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 0.126.
------- notes for trigger 1236151 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 260413d19h38m37s942391usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1236151
-expid=739697918 -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/1236151/
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.
*** Warning -- BAT and XRT error circles do NOT overlap.
UVOT exposure began at MET 739697918.86956 or about 2024:162:07:38:33 UT
Found 1196 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 18% of the srclist region. Found 73 sources in
srclist catalog. Found 5 srclist source(s) without IDs. There are 0 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
19.22 mag.
Found 2 source(s) in Genie image catalog. Found 2 Genie image source(s) without
IDs. There are 0 good candidate(s) in the Genie image catalog. Good candidates
must be brighter than 20.33 mag. Found 73 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 12% of the
Genie image region. The Genie image is INCOMPLETE with 17004 null pixels.
Genie image analysis:
Found 16416.7 counts in the large background region of 911.0 pixels or a rate
of 18.021 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 19.61 mag. for a
4-arcsec aperture.
Found 1 srclist source(s) within 10.0" of the XRT position.
The brightest such source has ra= 117.1407 dec= -67.7522 mag=16.86 sep=2.69".
The closest srclist source has ra= 117.1407 dec= -67.7522 mag=16.86 sep=2.69".
The closest Genie source has ra= 117.0879 dec= -67.7447 mag=13.69 sep=76.09".
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 88 seconds after the BAT trigger. There is a candidate afterglow in
the list of sources generated on-board at
RA(J2000) = 07:48:33.78 = 117.14073
DEC(J2000) = -67:45:08.0 = -67.75223
with a 90%-confidence error radius of about 1.10 arc sec. This position is 2.69
arc sec. from the center of the XRT error circle. The estimated magnitude is
16.86 with a 1-sigma error of about 0.35. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.126.
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?
739697918 87 WHITE srclist found no candidates.
739697918 87 WHITE image found no candidates.
List afterglow candidates for other finding charts.
739698709 878 WHITE srclist found no candidates.
739698709 878 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: SRCLIST
FILTER: white
GRB_DEC: -67.75281
GRB_ERROR: 5
GRB_RA: 117.13950
IMAGE_START_TIME: 07:38:33
MAGNITUDE: 18.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT