image overlap message for exposure 1 of trigger 1000452
uvot_overlap.pl vrs. 2010-12-20b fem started at 201016d06h49m47s129090usUT
The observation of trigger 1000452 started 2020-10-15T23:44:16.4
Examining file ./1000452_g3242_uvot_sky_image.fits
The exposure ID is 624498256
The exposure time is 149.879 (seconds)
The filter is WHITE.
The uvot region is centered at (354.3369,53.3946) with a roll angle of 323.8
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 (354.3430,53.3930) with a radius of 3.000 arc min
This is 0.237 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 (354.3186,53.4160) with a radius of 0.028 arc min
This is 1.445 arc min from the center of the uvot region
The area of the XRT error circle is 0.003 sq. arc min
The UVOT/XRT overlap is 0.000 sq. arc min or 0.03 of the XRT error circle
image afterglow message for exposure 1 of trigger 1000452
find_uvot_ag.pl vrs. 2017-02-17 fem started at 201016d06h49m52s198318usUT
Observation start time is 2020-10-15T23:44:16.4
Examining file ./1000452_g3242_uvot_catalog_image.fits
The exposure ID is 624498256
The exposure is 149.879 sec.
The bin size is 2 pixels
The filter is WHITE
There are 29 detected source(s) for 1000452_g3242
Aspect correction adds -0.00230 degrees (-0.551 sec of time = -4.93 arc sec) to RA
Aspect correction adds 0.00147 degrees ( 5.27 arcsec) to Dec
Total aspect correction is 7.22 arcsec
Star catalogs centered at 354.3374 , 53.3948 with radius 2.78 arc min.
n_usno: 302 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 30 matched entries is 0.486" for 1000452_g3242
Mean and std. dev of mag. difference (MAG_DELTA) are 1.033 and 0.314 for 1000452_g3242
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 1000452_g3242.
Acceptable entries have no ID, XRT distances < 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=354.3430 (23:37:22.32) DEC=53.3930 (+53:23:34.8)
XRT distances are from RA=354.3186 (23:37:16.46) DEC=53.4160 (+53:24:57.7)
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
354.3220 53.4167 7.7 -1 USNO-B1 20.47 18.91 19.61
The closest star is 7.72" away.
List UVOT sources within 10" of the XRT position:
There are 71174.586 counts in the bkg source region of 5715.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 12.454 counts/pixel (5-sig UL in 4" is 19.98 mag) for 1000452_g3242
Do not compute counts in XRT region because position is too far from center.
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 20.54, XRT distances < 5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 1000452_624498256_201016d06h49m52s198318usUT_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(354.3369,53.3946,45")
fk5;-circle(354.348086712859,53.3912802646439,6")
fk5;-circle(354.353255874735,53.3903781917188,6")
fk5;-circle(354.349800412424,53.3998965257186,6")
fk5;-circle(354.331152200578,53.3874615055206,6")
fk5;-circle(354.352780488796,53.3855968914588,6")
fk5;-circle(354.355311130939,53.4032296050574,6")
fk5;-circle(354.323159548832,53.4015275148353,6")
image paragraph message for exposure 1 of trigger 1000452
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: partial overlap
SRCLIST PROBLEM: srclist filled telemetry buffer
See notes for more details.
------ Start for Possible Stand-alone Circular ----
In response to GRB201015 (Swift/BAT trigger 1000452) at 22:50:13 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 3217 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
2.5% 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 0.34.
------- notes for trigger 1000452 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 201016d06h49m55s068695usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1000452
-expid=624498256 -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/1000452/
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 624498256.4333 or about 2020:289:23:44:11 UT
Found 1494 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 27% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 33 srclist
source(s) without IDs. There are 0 good candidate(s) in the srclist catalog.
Good candidates must be brighter than 19.22 mag.
Found 29 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 20.54 mag. Found 298 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
26% of the Genie image region.
Genie image analysis:
Found 71174.6 counts in the large background region of 5715.0 pixels or a rate
of 12.454 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 19.98 mag. for a
4-arcsec aperture. The number of srclist sources filled the available
telemetry. The weakest source detected was 19.28 mag. The closest srclist
source has ra= 354.3263 dec= 53.4137 mag=18.14 sep=18.47". The closest Genie
source has ra= 354.3266 dec= 53.4138 mag=17.14 sep=19.04".
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?
624498256 3216 WHITE srclist found no candidates.
624498256 3216 WHITE image found no candidates.
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------