image overlap message for exposure 1 of trigger 1267501
uvot_overlap.pl vrs. 2010-12-20b fem started at 241113d13h44m38s066834usUT
The observation of trigger 1267501 started 2024-11-13T07:50:09.6
Examining file ./1267501_g115_uvot_sky_image.fits
The exposure ID is 753177009
The exposure time is 101.259 (seconds)
The filter is WHITE.
The uvot region is centered at (16.5717,-22.6721) with a roll angle of 220.5
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 (16.5760,-22.6670) with a radius of 3.000 arc min
This is 0.385 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 (16.5652,-22.6716) with a radius of 0.038 arc min
This is 0.362 arc min from the center of the uvot region
The area of the XRT error circle is 0.005 sq. arc min
The UVOT/XRT overlap is 0.005 sq. arc min or 1.00 of the XRT error circle
image afterglow message for exposure 1 of trigger 1267501
find_uvot_ag.pl vrs. 2023-04-25a fem started at 241113d13h44m40s100304usUT
Observation start time is 2024-11-13T07:50:09.6
Examining file ./1267501_g115_uvot_catalog_image.fits
The exposure ID is 753177009
The exposure is 101.259 sec.
The bin size is 2 pixels
The filter is WHITE
There are 7 detected source(s) for 1267501_g115
Aspect correction adds -0.00150 degrees (-0.360 sec of time = -4.98 arc sec) to RA
Aspect correction adds -0.00023 degrees (-0.84 arcsec) to Dec
Total aspect correction is 5.05 arcsec
Star catalogs centered at 16.5782 , -22.6744 with radius 2.80 arc min.
n_usno: 56 n_gsc: 44
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 11.6442
RA DEC Mag Color
bright star 0: 16.57159 (01:06:17.18) -22.70884 (-22:42:31.8) 11.64 GSC-F
Mean distance difference (CAT_DELTA) for 8 matched entries is 0.907" for 1267501_g115
Mean and std. dev of mag. difference (MAG_DELTA) are -0.062 and 2.091 for 1267501_g115
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 1267501_g115.
Acceptable entries have no ID, XRT distances < 5.75", 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=16.5760 (01:06:18.24) DEC=-22.6670 (-22:40:01.2)
XRT distances are from RA=16.5652 (01:06:15.65) DEC=-22.6716 (-22:40:17.9)
Found 1 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
16.5639 -22.6701 7.1 -1 USNO-B1 21.58 21.17 21.35
The closest star is 7.07" away.
List UVOT sources within 10" of the XRT position:
Matched source ra=16.56517 (01:06:15.64) dec=-22.67177 (-22:40:18.4) +/- 0.7" mag=15.87+/-0.14 dist=0.5 REFID=3 flag=0
There are 30323.643 counts in the bkg source region of 6083.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 4.985 counts/pixel (5-sig UL in 4" is 20.05 mag) for 1267501_g115
There are 4714.9473 counts in the xrt source region of 207.00000 pixels.
Rate in xrt region with 8 arcsec radius is 22.778 counts/pixel for 1267501_g115
There are 6221.3105 counts in the xrt_bkg source region of 1253.0000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 4.965 counts/pixel (5-sig UL in 4" is 20.05 mag) for 1267501_g115
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 20.61, XRT distances < 5.75",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 1267501_753177009_241113d13h44m40s100304usUT_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(16.5717,-22.6721,45")
fk5;-circle(16.5812145294221,-22.6766587795365,6")
fk5;-circle(16.5651747501836,-22.6717660859537,6")
Region file: 1267501_753177009_241113d13h44m40s100304usUT_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(16.56521,-22.67164,8")
Region file: 1267501_753177009_241113d13h44m40s100304usUT_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(16.56521,-22.67164,25")
fk5;-circle(16.56521,-22.67164,15")
image paragraph message for exposure 1 of trigger 1267501
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 GRB241113 (Swift/BAT trigger 1267501) at 07:48:13 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 101 seconds with the White filter
starting 81 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.
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
0.030.
------- notes for trigger 1267501 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 241113d13h44m46s059246usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1267501
-expid=753177009 -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/1267501/
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 753177009.57694 or about 2024:318:07:50:04 UT
Found 315 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 6% of the srclist region. Found 13 sources in
srclist catalog. Found 2 srclist source(s) without IDs. There are 0 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
19.01 mag.
Found 7 source(s) in Genie image catalog. 1 source(s) are within 10.0" of the
xrt position. Found 0 Genie image source(s) without IDs. There are 0 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
20.61 mag. Found 52 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 4% of the Genie image region.
Genie image analysis:
Found 30323.6 counts in the large background region of 6083.0 pixels or a rate
of 4.985 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 19.87 mag. for a
4-arcsec aperture.
Found 4714.9 counts in the XRT position region of 207.0 pixels or a rate of
22.777 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 36.506 +/- 0.692 (1-sigma) cps or
15.70 mag and a range from 15.68 to 15.72 mag. The 3-sigma UL at the XRT
position is 38.582 cps or 15.64 mag.
Found 1 srclist source(s) within 10.0" of the XRT position.
The brightest such source has ra= 16.5651 dec= -22.6719 mag=16.83 sep=0.82".
The closest srclist source has ra= 16.5651 dec= -22.6719 mag=16.83 sep=0.82".
Found 1 Genie source(s) within 10.0" of the XRT position. The brightest such
source has ra= 16.5652 dec= -22.6718 mag=15.87 sep=0.47". The closest Genie
source has ra= 16.5652 dec= -22.6718 mag=15.87 sep=0.47".
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 101 seconds with the White filter
starting 81 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 01:06:15.64 = 16.56517
DEC(J2000) = -22:40:18.4 = -22.67177
with a 90%-confidence error radius of about 0.74 arc sec. This position is 0.47
arc sec. from the center of the XRT error circle. The estimated magnitude is
15.87 with a 1-sigma error of about 0.14. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.030.
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?
753177009 80 WHITE srclist found no candidates.
753177009 80 WHITE image found no candidates.
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: -22.67164
GRB_ERROR: 5.75
GRB_RA: 16.56521
IMAGE_START_TIME: 07:50:04
MAGNITUDE: 15.6
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT