image overlap message for exposure 1 of trigger 1098132
uvot_overlap.pl vrs. 2010-12-20b fem started at 220320d07h21m56s760383usUT
The observation of trigger 1098132 started 2022-03-19T17:42:47.0
Examining file ./1098132_g132_uvot_sky_image.fits
The exposure ID is 669404566
The exposure time is 149.857 (seconds)
The filter is WHITE.
The uvot region is centered at (218.2139,61.2962) with a roll angle of 42.9
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 (218.2070,61.2890) with a radius of 3.000 arc min
This is 0.476 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 (218.2242,61.2950) with a radius of 0.037 arc min
This is 0.306 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 1098132
find_uvot_ag.pl vrs. 2020-10-30 fem started at 220320d07h22m00s048824usUT
Observation start time is 2022-03-19T17:42:47.0
Examining file ./1098132_g132_uvot_catalog_image.fits
The exposure ID is 669404566
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 7 detected source(s) for 1098132_g132
Aspect correction adds -0.00022 degrees (-0.052 sec of time = -0.38 arc sec) to RA
Aspect correction adds 0.00222 degrees ( 8.00 arcsec) to Dec
Total aspect correction is 8.01 arcsec
Star catalogs centered at 218.2105 , 61.2932 with radius 2.28 arc min.
n_usno: 47 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 8 matched entries is 0.657" for 1098132_g132
Mean and std. dev of mag. difference (MAG_DELTA) are 0.785 and 0.520 for 1098132_g132
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 1098132_g132.
Acceptable entries have no ID, XRT distances < 5.5", 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=218.2070 (14:32:49.68) DEC=61.2890 (+61:17:20.4)
XRT distances are from RA=218.2242 (14:32:53.81) DEC=61.2950 (+61:17:41.9)
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
There are 32517.549 counts in the bkg source region of 6098.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 5.332 counts/pixel (5-sig UL in 4" is 20.44 mag) for 1098132_g132
There are 1065.8481 counts in the xrt source region of 200.00000 pixels.
Rate in xrt region with 8 arcsec radius is 5.329 counts/pixel for 1098132_g132
There are 6601.5112 counts in the xrt_bkg source region of 1237.0000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 5.337 counts/pixel (5-sig UL in 4" is 20.44 mag) for 1098132_g132
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 21.00, XRT distances < 5.5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 1098132_669404566_220320d07h22m00s048824usUT_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(218.2139,61.2962,45")
fk5;-circle(218.226882214902,61.2976455086112,6")
fk5;-circle(218.199731364476,61.3052933923599,6")
Region file: 1098132_669404566_220320d07h22m00s048824usUT_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(218.22421,61.29497,8")
Region file: 1098132_669404566_220320d07h22m00s048824usUT_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(218.22421,61.29497,25")
fk5;-circle(218.22421,61.29497,15")
fk5;-circle(218.226882214902,61.2976455086112,6")
image paragraph message for exposure 1 of trigger 1098132
------ Start for Possible Stand-alone Circular ----
In response to GRB220319 (Swift/BAT trigger 1098132) at 17:40:33 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 104 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.
Data 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 0.010.
------- notes for trigger 1098132 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 220320d07h22m09s108930usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1098132
-expid=669404566 -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/1098132/
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 669404566.9613 or about 2022:078:17:42:41 UT
No information found about the number of stars in the star catalog for srclist
region.
Found 7 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 21.00 mag. Found 43 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 5% of the
Genie image region.
Genie image analysis:
Found 32517.5 counts in the large background region of 6098.0 pixels or a rate
of 5.332 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 20.27 mag. for a
4-arcsec aperture.
Found 1065.8 counts in the XRT position region of 200.0 pixels or a rate of
5.329 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is -0.010 +/- 0.235 (1-sigma) cps. The
3-sigma UL at the XRT position is 0.704 cps or 19.99 mag. The closest Genie
source has ra= 218.2269 dec= 61.2976 mag=19.75 sep=10.68".
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?
669404566 103 ? srclist data are not available.
669404566 103 WHITE image found no candidates.
List afterglow candidates for other finding charts.
669404779 316 U srclist found no candidates.
669404779 316 U image found no candidates.
669405333 870 WHITE srclist found no candidates.
669405333 870 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 61.29497
GRB_ERROR: 5.5
GRB_RA: 218.22421
IMAGE_START_TIME: 17:42:41
MAGNITUDE: 20.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT