image overlap message for exposure 2 of trigger 1009679
uvot_overlap.pl vrs. 2010-12-20b fem started at 201128d16h03m44s758230usUT
The observation of trigger 1009679 started 2020-11-28T06:33:13.1
Examining file ./1009679_g314_uvot_sky_image.fits
The exposure ID is 628237993
The exposure time is 249.924 (seconds)
The filter is U.
The uvot region is centered at (223.1390,26.6744) with a roll angle of 154.5
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 (223.1360,26.6780) with a radius of 3.000 arc min
This is 0.271 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 (223.1077,26.6850) with a radius of 0.033 arc min
This is 1.796 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 0.00 of the XRT error circle
image afterglow message for exposure 2 of trigger 1009679
find_uvot_ag.pl vrs. 2020-10-30 fem started at 201128d16h03m57s669060usUT
Observation start time is 2020-11-28T06:33:13.1
Examining file ./1009679_g314_uvot_catalog_image.fits
The exposure ID is 628237993
The exposure is 249.924 sec.
The bin size is 2 pixels
The filter is U
There are 2 detected source(s) for 1009679_g314
Aspect correction adds -0.00015 degrees (-0.037 sec of time = -0.49 arc sec) to RA
Aspect correction adds -0.00062 degrees (-2.22 arcsec) to Dec
Total aspect correction is 2.27 arcsec
Star catalogs centered at 223.1416 , 26.6764 with radius 2.21 arc min.
n_usno: 39 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 2 matched entries is 0.138" for 1009679_g314
Mean and std. dev of mag. difference (MAG_DELTA) are 1.071 and 0.577 for 1009679_g314
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 1009679_g314.
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=223.1360 (14:52:32.64) DEC=26.6780 (+26:40:40.8)
XRT distances are from RA=223.1077 (14:52:25.84) DEC=26.6850 (+26:41:06.1)
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
There are 72948.039 counts in the bkg source region of 6305.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 11.570 counts/pixel (5-sig UL in 4" is 19.14 mag) for 1009679_g314
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 19.69, 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: 1009679_628237993_201128d16h03m57s669060usUT_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(223.1390,26.6744,45")
image paragraph message for exposure 2 of trigger 1009679
IMAGE PROBLEM: no overlap
------ Start for Possible Stand-alone Circular ----
In response to GRB201128 (Swift/BAT trigger 1009679) at 06:27:58 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
288 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 none of the
XRT error circle. 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 0.03.
------- notes for trigger 1009679 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 201128d16h04m01s703179usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1009679
-expid=628237993 -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/1009679/
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 628237993.06672 or about 2020:333:06:33:08 UT
Found 557 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 6% of the srclist region. Found 25 sources in
srclist catalog. Found 1 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 19.69 mag. Found 35 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 4% of the
Genie image region.
Genie image analysis:
Found 72948.0 counts in the large background region of 6305.0 pixels or a rate
of 11.570 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 18.99 mag. for a
4-arcsec aperture. The closest srclist source has ra= 223.1298 dec= 26.6931
mag=15.15 sep=76.84". The closest Genie source has ra= 223.1298 dec= 26.6931
mag=14.70 sep=76.71".
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?
628237993 288 U srclist found no candidates.
628237993 288 U image found no candidates.
List afterglow candidates for other finding charts.
628237834 129 WHITE srclist found no candidates.
628237834 129 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: SRCLIST
FILTER: u
GRB_DEC: 26.68503
GRB_ERROR: 5
GRB_RA: 223.10767
IMAGE_START_TIME: 06:33:08
MAGNITUDE: 18.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT