image overlap message for exposure 2 of trigger 1093592
uvot_overlap.pl vrs. 2010-12-20b fem started at 220117d23h37m40s592153usUT
The observation of trigger 1093592 started 2022-01-17T16:24:40.5
Examining file ./1093592_g348_uvot_sky_image.fits
The exposure ID is 664129480
The exposure time is 249.935 (seconds)
The filter is U.
The uvot region is centered at (91.5697,-28.4396) with a roll angle of 212.0
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 (91.5780,-28.4100) with a radius of 3.000 arc min
This is 1.827 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 6.59 sq. arc min or 0.23 of the BAT error circle
The XRT error circle is centered at (91.5722,-28.4376) with a radius of 0.038 arc min
This is 0.173 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 1093592
find_uvot_ag.pl vrs. 2020-10-30 fem started at 220117d23h38m01s150019usUT
Observation start time is 2022-01-17T16:24:40.5
Examining file ./1093592_g348_uvot_catalog_image.fits
The exposure ID is 664129480
The exposure is 249.935 sec.
The bin size is 2 pixels
The filter is U
There are 2 detected source(s) for 1093592_g348
Aspect correction adds -0.00107 degrees (-0.257 sec of time = -3.39 arc sec) to RA
Aspect correction adds -0.00032 degrees (-1.16 arcsec) to Dec
Total aspect correction is 3.58 arcsec
Star catalogs centered at 91.5720 , -28.4345 with radius 2.58 arc min.
n_usno: 76 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 2 matched entries is 0.545" for 1093592_g348
Mean and std. dev of mag. difference (MAG_DELTA) are 1.344 and 0.583 for 1093592_g348
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 1093592_g348.
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.
Magnitude criteria will be applied later.
BAT distances are from RA=91.5780 (06:06:18.72) DEC=-28.4100 (-28:24:36.0)
XRT distances are from RA=91.5722 (06:06:17.32) DEC=-28.4376 (-28:26:15.5)
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
There are 9918.2520 counts in the bkg source region of 6308.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 1.572 counts/pixel (5-sig UL in 4" is 20.22 mag) for 1093592_g348
There are 333.55841 counts in the xrt source region of 199.00000 pixels.
Rate in xrt region with 8 arcsec radius is 1.676 counts/pixel for 1093592_g348
There are 1937.0851 counts in the xrt_bkg source region of 1246.0000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 1.555 counts/pixel (5-sig UL in 4" is 20.23 mag) for 1093592_g348
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 20.77, 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: 1093592_664129480_220117d23h38m01s150019usUT_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(91.5697,-28.4396,45")
Region file: 1093592_664129480_220117d23h38m01s150019usUT_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(91.57217,-28.43764,8")
Region file: 1093592_664129480_220117d23h38m01s150019usUT_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(91.57217,-28.43764,25")
fk5;-circle(91.57217,-28.43764,15")
image paragraph message for exposure 2 of trigger 1093592
SRCLIST PROBLEM: srclist filled telemetry buffer
------ Start for Possible Stand-alone Circular ----
In response to GRB220117 (Swift/BAT trigger 1093592) at 16:18:51 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
320 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
0.028.
------- notes for trigger 1093592 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 220117d23h38m06s335938usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1093592
-expid=664129480 -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/1093592/
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 664129480.50222 or about 2022:017:16:24:35 UT
Found 436 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 9% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 142 srclist
source(s) without IDs. There are 0 good candidate(s) in the srclist catalog.
Good candidates must be brighter than 18.12 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 20.77 mag. Found 72 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 9918.3 counts in the large background region of 6308.0 pixels or a rate
of 1.572 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 20.06 mag. for a
4-arcsec aperture.
Found 333.6 counts in the XRT position region of 199.0 pixels or a rate of
1.676 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 0.097 +/- 0.078 (1-sigma) cps or
20.71 mag and a range from 20.07 to 22.50 mag. The 3-sigma UL at the XRT
position is 0.332 cps or 19.38 mag. The number of srclist sources filled the
available telemetry. The weakest source detected was 18.83 mag. The closest
srclist source has ra= 91.5523 dec= -28.4241 mag=18.21 sep=79.50". The closest
Genie source has ra= 91.5525 dec= -28.4240 mag=17.38 sep=79.22".
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?
664129480 320 U srclist found no candidates.
664129480 320 U image found no candidates.
List afterglow candidates for other finding charts.
664129321 161 WHITE srclist found no candidates.
664129321 161 WHITE image found no candidates.
664130036 876 WHITE srclist found no candidates.
664130036 876 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: u
GRB_DEC: -28.43764
GRB_ERROR: 5.75
GRB_RA: 91.57217
IMAGE_START_TIME: 16:24:35
MAGNITUDE: 19.4
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT