image overlap message for exposure 1 of trigger 1191188
uvot_overlap.pl vrs. 2010-12-20b fem started at 230911d15h17m48s859733usUT
The observation of trigger 1191188 started 2023-09-11T08:49:59.8
Examining file ./1191188_g153_uvot_sky_image.fits
The exposure ID is 716114999
The exposure time is 149.857 (seconds)
The filter is WHITE.
The uvot region is centered at (226.7745,-41.3315) with a roll angle of 296.2
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 (226.7820,-41.3340) with a radius of 3.000 arc min
This is 0.368 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 (226.7985,-41.3302) with a radius of 0.035 arc min
This is 1.084 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 1191188
find_uvot_ag.pl vrs. 2023-04-25a fem started at 230911d15h17m50s036948usUT
Observation start time is 2023-09-11T08:49:59.8
Examining file ./1191188_g153_uvot_catalog_image.fits
The exposure ID is 716114999
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 30 detected source(s) for 1191188_g153
Aspect correction adds -0.00142 degrees (-0.342 sec of time = -3.85 arc sec) to RA
Aspect correction adds 0.00076 degrees ( 2.74 arcsec) to Dec
Total aspect correction is 4.72 arcsec
Star catalogs centered at 226.7749 , -41.3367 with radius 2.59 arc min.
n_usno: 258 n_gsc: 320
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 27 matched entries is 0.706" for 1191188_g153
Mean and std. dev of mag. difference (MAG_DELTA) are 1.089 and 0.667 for 1191188_g153
Found 4 entries without IDs and 4 entries that are acceptable afterglow candidates for 1191188_g153.
Acceptable entries have no ID, XRT distances < 5.25", 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=226.7820 (15:07:07.68) DEC=-41.3340 (-41:20:02.4)
XRT distances are from RA=226.7985 (15:07:11.64) DEC=-41.3302 (-41:19:48.6)
-----------------
Entry 12 in the list of sources is a candidate afterglow for 1191188_g153 with genie
ra=226.78310 (15:07:07.94) dec=-41.35271 (-41:21:09.8) +/- 0.6" mag=18.48+/-0.15
dist=91.2 REFID=26 major=1.0 minor=0.7 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 67.4 arc sec from the BAT position.
This source is near the edge of image (0.949)
Found 14 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
226.7810 -41.3484 16.6 -1 USNO-B1 17.73 16.36 16.97
226.7810 -41.3532 6.0 -1 USNO-B1 20.63 19.24 19.86
226.7840 -41.3536 4.0 -1 USNO-B1 99.99 14.38 99.99 *
226.7842 -41.3540 5.6 -1 USNO-B1 16.19 14.20 15.08
226.7774 -41.3555 18.4 -1 USNO-B1 17.70 17.05 17.34
226.7840 -41.3567 14.5 -1 USNO-B1 20.27 19.16 19.65
226.7809 -41.3484 16.5 -1 GSC2.3 16.35 17.55 99.99
226.7893 -41.3497 19.8 -1 GSC2.3 99.99 21.86 99.99
226.7809 -41.3532 6.3 -1 GSC2.3 19.17 20.59 99.99
226.7838 -41.3531 2.4 -1 GSC2.3 15.74 17.09 99.99 *
226.7773 -41.3555 18.5 -1 GSC2.3 17.97 99.99 99.99
226.7844 -41.3546 7.6 -1 GSC2.3 15.19 16.72 99.99
226.7807 -41.3561 13.9 -1 GSC2.3 99.99 21.05 99.99
226.7839 -41.3567 14.5 -1 GSC2.3 19.22 20.28 99.99
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 17 in the list of sources is a candidate afterglow for 1191188_g153 with genie
ra=226.77607 (15:07:06.26) dec=-41.35572 (-41:21:20.6) +/- 0.6" mag=18.59+/-0.15
dist=110.2 REFID=29 major=1.6 minor=1.1 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 79.8 arc sec from the BAT position.
This source is near the edge of image (0.923)
Found 13 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
226.7741 -41.3520 14.5 -1 USNO-B1 20.42 18.93 19.59
226.7712 -41.3532 15.9 -1 USNO-B1 17.37 15.71 16.45
226.7810 -41.3532 16.1 -1 USNO-B1 20.63 19.24 19.86
226.7774 -41.3555 3.6 -1 USNO-B1 17.70 17.05 17.34 *
226.7693 -41.3552 18.4 -1 USNO-B1 17.49 16.29 16.82
226.7767 -41.3557 1.8 -1 USNO-B1 99.99 16.41 99.99 *
226.7740 -41.3519 14.8 -1 GSC2.3 18.81 20.41 99.99
226.7711 -41.3532 16.0 -1 GSC2.3 15.64 17.07 99.99
226.7809 -41.3532 15.8 -1 GSC2.3 19.17 20.59 99.99
226.7773 -41.3555 3.5 -1 GSC2.3 17.97 99.99 99.99 *
226.7693 -41.3553 18.5 -1 GSC2.3 16.23 17.34 99.99
226.7759 -41.3561 1.5 -1 GSC2.3 17.29 17.31 99.99 *
226.7807 -41.3561 12.6 -1 GSC2.3 99.99 21.05 99.99
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 26 in the list of sources is a candidate afterglow for 1191188_g153 with genie
ra=226.74748 (15:06:59.40) dec=-41.34414 (-41:20:38.9) +/- 0.8" mag=20.23+/-0.22
dist=146.8 REFID=23 major=1.3 minor=0.5 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 100.2 arc sec from the BAT position.
This source is near the edge of image (1.106)
Found 6 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
226.7491 -41.3431 5.8 -1 USNO-B1 18.73 17.48 18.03
226.7453 -41.3389 19.8 -1 USNO-B1 18.91 17.71 18.24
226.7430 -41.3410 16.4 -1 USNO-B1 21.15 19.25 20.09
226.7490 -41.3430 5.8 -1 GSC2.3 17.64 18.77 99.99
226.7452 -41.3389 19.8 -1 GSC2.3 17.70 18.84 99.99
226.7430 -41.3411 16.4 -1 GSC2.3 19.28 20.90 99.99
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 29 in the list of sources is a candidate afterglow for 1191188_g153 with genie
ra=226.76667 (15:07:04.00) dec=-41.36139 (-41:21:41.0) +/- 0.7" mag=20.04+/-0.20
dist=141.5 REFID=3 major=0.7 minor=0.5 flag=16 (aperture_incomplete)
*** The position of this source is inconsistent with the XRT position.
The position is 106.9 arc sec from the BAT position.
This source is near the edge of image (1.024)
Found 10 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
226.7671 -41.3623 3.4 -1 USNO-B1 16.08 14.82 15.38 *
226.7655 -41.3627 5.7 -1 USNO-B1 19.13 17.38 18.15
226.7615 -41.3618 14.1 -1 USNO-B1 18.58 17.50 17.98
226.7717 -41.3643 17.0 -1 USNO-B1 21.08 18.94 19.89
226.7656 -41.3572 15.4 -1 GSC2.3 19.83 21.79 99.99
226.7671 -41.3623 3.5 -1 GSC2.3 14.54 15.59 99.99 *
226.7614 -41.3618 14.3 -1 GSC2.3 17.53 18.56 99.99
226.7714 -41.3641 16.2 -1 GSC2.3 99.99 20.93 99.99
226.7681 -41.3659 16.5 -1 GSC2.3 99.99 21.40 99.99
226.7638 -41.3659 18.1 -1 GSC2.3 99.99 21.33 99.99
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 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
226.7970 -41.3277 9.8 -1 USNO-B1 18.87 18.05 18.41
226.7970 -41.3277 9.8 -1 GSC2.3 18.00 18.89 99.99
The closest star is 9.80" away.
List UVOT sources within 10" of the XRT position:
Matched source ra=226.79704 (15:07:11.29) dec=-41.32786 (-41:19:40.3) +/- 1.1" mag=20.97+/-0.33 dist=9.2 REFID=11 flag=0
There are 82627.266 counts in the bkg source region of 5839.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 14.151 counts/pixel (5-sig UL in 4" is 19.91 mag) for 1191188_g153
There are 2795.1116 counts in the xrt source region of 198.00000 pixels.
Rate in xrt region with 8 arcsec radius is 14.117 counts/pixel for 1191188_g153
XRT source is too far (65.0542984583088") from center -- do not compute local background.
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 20.47, XRT distances < 5.25",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 1191188_716114999_230911d15h17m50s036948usUT_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(226.7745,-41.3315,45")
fk5;-circle(226.782693141449,-41.3281556174954,6")
fk5;-circle(226.780927689998,-41.340747864684,6")
fk5;-circle(226.777791916049,-41.3250450435357,6")
fk5;-circle(226.783790398291,-41.324055738154,6")
fk5;-circle(226.771264160221,-41.3184602404275,6")
Region file: 1191188_716114999_230911d15h17m50s036948usUT_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(226.79850,-41.33017,8")
image paragraph message for exposure 1 of trigger 1191188
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 GRB230911 (Swift/BAT trigger 1191188) at 08:47:25 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 122 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.
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 0.101.
------- notes for trigger 1191188 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 230911d15h17m51s873001usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1191188
-expid=716114999 -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/1191188/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
XRT position found for Genie image. BAT position found.
UVOT exposure began at MET 716114999.84642 or about 2023:254:08:49:54 UT
No information found about the number of stars in the star catalog for srclist
region.
Found 30 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 0 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
20.47 mag. Found 307 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 31% of the Genie image region.
Genie image analysis:
Found 82627.3 counts in the large background region of 5839.0 pixels or a rate
of 14.151 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 19.74 mag. for a
4-arcsec aperture.
Found 2795.1 counts in the XRT position region of 198.0 pixels or a rate of
14.117 counts/pixel in a radius of 8.0 arcsec. The net count rate (using large
background region) at the XRT position is -0.045 +/- 0.358 (1-sigma) cps. The
3-sigma UL at the XRT position is 1.075 cps or 19.53 mag.
Found 1 Genie source(s) within 10.0" of the XRT position. The brightest such
source has ra= 226.7970 dec= -41.3279 mag=20.97 sep=9.22". The closest Genie
source has ra= 226.7970 dec= -41.3279 mag=20.97 sep=9.22".
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 122 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 15:07:11.29 = 226.79704
DEC(J2000) = -41:19:40.3 = -41.32786
with a 90%-confidence error radius of about 1.08 arc sec. This position is 9.22
arc sec. from the center of the XRT error circle. The estimated magnitude is
20.97 with a 1-sigma error of about 0.33. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.101.
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?
716114999 121 WHITE srclist data are not available.
716114999 121 WHITE image found no candidates.
List afterglow candidates for other finding charts.
716115157 279 ? srclist data are not available.
716115157 279 U image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: -41.33017
GRB_ERROR: 5.25
GRB_RA: 226.79850
IMAGE_START_TIME: 08:49:54
MAGNITUDE: 19.5
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT