image overlap message for exposure 2 of trigger 1093611
uvot_overlap.pl vrs. 2010-12-20b fem started at 220118d02h08m45s685245usUT
The observation of trigger 1093611 started 2022-01-17T20:10:19.0
Examining file ./1093611_g290_uvot_sky_image.fits
The exposure ID is 664143019
The exposure time is 42.935 (seconds)
The filter is U.
The uvot region is centered at (191.9569,-28.7464) with a roll angle of 116.6
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 (191.9470,-28.7440) with a radius of 3.000 arc min
This is 0.540 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 (191.9529,-28.7454) with a radius of 0.038 arc min
This is 0.217 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 2 of trigger 1093611
find_uvot_ag.pl vrs. 2020-10-30 fem started at 220118d02h09m00s533848usUT
Observation start time is 2022-01-17T20:10:19.0
Examining file ./1093611_g290_uvot_catalog_image.fits
The exposure ID is 664143019
The exposure is 42.935 sec.
The bin size is 2 pixels
The filter is U
There are 2 detected source(s) for 1093611_g290
Aspect correction adds 0.00312 degrees (0.749 sec of time = 9.85 arc sec) to RA
Aspect correction adds 0.00099 degrees ( 3.56 arcsec) to Dec
Total aspect correction is 10.48 arcsec
Star catalogs centered at 191.9471 , -28.7484 with radius 2.20 arc min.
n_usno: 54 n_gsc: 0
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 11.13488
RA DEC Mag Color
bright star 0: 191.94710 (12:47:47.30) -28.75659 (-28:45:23.7) 11.13 USNO-V
Mean distance difference (CAT_DELTA) for 2 matched entries is 0.476" for 1093611_g290
Mean and std. dev of mag. difference (MAG_DELTA) are 1.206 and 0.751 for 1093611_g290
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 1093611_g290.
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=191.9470 (12:47:47.28) DEC=-28.7440 (-28:44:38.4)
XRT distances are from RA=191.9529 (12:47:48.70) DEC=-28.7454 (-28:44:43.4)
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
There are 16296.157 counts in the bkg source region of 6237.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 2.613 counts/pixel (5-sig UL in 4" is 18.03 mag) for 1093611_g290
There are 496.32886 counts in the xrt source region of 193.00000 pixels.
Rate in xrt region with 8 arcsec radius is 2.572 counts/pixel for 1093611_g290
There are 3264.6804 counts in the xrt_bkg source region of 1244.0000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 2.624 counts/pixel (5-sig UL in 4" is 18.03 mag) for 1093611_g290
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 18.59, 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: 1093611_664143019_220118d02h09m00s533848usUT_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(191.9569,-28.7464,45")
fk5;-circle(191.942954272684,-28.7435467725304,6")
fk5;-circle(191.947205656116,-28.7564840953392,6")
Region file: 1093611_664143019_220118d02h09m00s533848usUT_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(191.95292,-28.74539,8")
Region file: 1093611_664143019_220118d02h09m00s533848usUT_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(191.95292,-28.74539,25")
fk5;-circle(191.95292,-28.74539,15")
image paragraph message for exposure 2 of trigger 1093611
------ Start for Possible Stand-alone Circular ----
In response to GRB220117 (Swift/BAT trigger 1093611) at 20:05:28 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 43 seconds with the U filter starting
262 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 19.2 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 18.0 mag. No
correction has been made for the expected extinction corresponding to E(B-V) of
0.075.
------- notes for trigger 1093611 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 220118d02h09m06s071258usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1093611
-expid=664143019 -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/1093611/
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 664143019.04042 or about 2022:017:20:10:14 UT
Found 220 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 5% of the srclist region. Found 16 sources in
srclist catalog. Found 3 srclist source(s) without IDs. There are 0 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
17.16 mag.
Found 2 source(s) in Genie image catalog. 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 18.59 mag. Found 50 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 7% of the
Genie image region.
Genie image analysis:
Found 16296.2 counts in the large background region of 6237.0 pixels or a rate
of 2.613 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 17.87 mag. for a
4-arcsec aperture.
Found 496.3 counts in the XRT position region of 193.0 pixels or a rate of
2.572 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is -0.237 +/- 0.558 (1-sigma) cps. The
3-sigma UL at the XRT position is 1.673 cps or 17.62 mag. The closest srclist
source has ra= 191.9430 dec= -28.7435 mag=18.74 sep=32.00". The closest Genie
source has ra= 191.9429 dec= -28.7435 mag=16.64 sep=32.15".
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?
664143019 262 U srclist found no candidates.
664143019 262 U image found no candidates.
List afterglow candidates for other finding charts.
664142860 103 WHITE srclist found no candidates.
664142860 103 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: u
GRB_DEC: -28.74539
GRB_ERROR: 5.75
GRB_RA: 191.95292
IMAGE_START_TIME: 20:10:14
MAGNITUDE: 17.6
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT