image overlap message for exposure 1 of trigger 1030629
uvot_overlap.pl vrs. 2010-12-20b fem started at 210205d14h10m28s045018usUT
The observation of trigger 1030629 started 2021-02-05T11:14:02.3
Examining file ./1030629_g164_uvot_sky_image.fits
The exposure ID is 634216442
The exposure time is 149.857 (seconds)
The filter is WHITE.
The uvot region is centered at (347.2501,56.3110) with a roll angle of 207.7
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 (347.2570,56.3120) with a radius of 3.000 arc min
This is 0.236 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 (347.2191,56.2965) with a radius of 0.033 arc min
This is 1.352 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 0.001 sq. arc min or 0.40 of the XRT error circle
image afterglow message for exposure 1 of trigger 1030629
find_uvot_ag.pl vrs. 2020-10-30 fem started at 210205d14h10m36s604076usUT
Observation start time is 2021-02-05T11:14:02.3
Examining file ./1030629_g164_uvot_catalog_image.fits
The exposure ID is 634216442
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 24 detected source(s) for 1030629_g164
Aspect correction adds -0.00035 degrees (-0.085 sec of time = -0.71 arc sec) to RA
Aspect correction adds 0.00108 degrees ( 3.89 arcsec) to Dec
Total aspect correction is 3.95 arcsec
Star catalogs centered at 347.2500 , 56.3070 with radius 2.61 arc min.
n_usno: 266 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 24 matched entries is 0.390" for 1030629_g164
Mean and std. dev of mag. difference (MAG_DELTA) are 0.933 and 0.284 for 1030629_g164
Found 0 entries without IDs and 0 entries that are acceptable afterglow candidates for 1030629_g164.
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=347.2570 (23:09:01.68) DEC=56.3120 (+56:18:43.2)
XRT distances are from RA=347.2191 (23:08:52.58) DEC=56.2965 (+56:17:47.4)
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
There are 1.1244304E+05 counts in the bkg source region of 5334.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 21.080 counts/pixel (5-sig UL in 4" is 19.69 mag) for 1030629_g164
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 20.25, 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: 1030629_634216442_210205d14h10m36s604076usUT_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(347.2501,56.3110,45")
fk5;-circle(347.257915676966,56.3168529809812,6")
fk5;-circle(347.266860745971,56.3121286223515,6")
fk5;-circle(347.253721159261,56.3052181585518,6")
fk5;-circle(347.269636880704,56.3147671369511,6")
fk5;-circle(347.263829113094,56.3188620073885,6")
fk5;-circle(347.265887262933,56.3207852558434,6")
fk5;-circle(347.266887238757,56.3031796063283,6")
fk5;-circle(347.236994064952,56.3129577570297,6")
fk5;-circle(347.247662831209,56.3219239381888,6")
fk5;-circle(347.255931703021,56.3238956024415,6")
fk5;-circle(347.245764885079,56.3005570547413,6")
image paragraph message for exposure 1 of trigger 1030629
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.
WARNING -- because of the LARGE EXTINCTION, results should be used cautiously.
------ Start for Possible Stand-alone Circular ----
In response to GRB210205 (Swift/BAT trigger 1030629) at 11:11:17 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 138 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 40% 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 large, but uncertain, extinction expected.
------- notes for trigger 1030629 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 210205d14h10m41s017431usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1030629
-expid=634216442 -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/1030629/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
Unreliable extinction found for xrt position. XRT position found for srclist.
XRT position found for Genie image. BAT position found.
UVOT exposure began at MET 634216442.27278 or about 2021:036:11:13:57 UT
Found 1529 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 27 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 24 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 20.25 mag. Found 262 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 112443.0 counts in the large background region of 5334.0 pixels or a rate
of 21.080 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 19.52 mag. for a
4-arcsec aperture. The number of srclist sources filled the available
telemetry. The weakest source detected was 18.98 mag.
Found 1 srclist source(s) within 10.0" of the XRT position.
The brightest such source has ra= 347.2217 dec= 56.2987 mag=17.75 sep=9.54".
The closest srclist source has ra= 347.2217 dec= 56.2987 mag=17.75 sep=9.54".
The closest Genie source has ra= 347.2220 dec= 56.2989 mag=17.02 sep=10.35".
This paragraph is only useful if the XRT position is grossly wrong. There are 1
candidate(s) in the srclist data with mag < 18.66 inside the BAT error region,
but outside the XRT error region. The brightest such source is at RA=347.31795
(23:09:16.31), DEC=56.28103 (+56:16:51.7) (J2000). It has a mag of 17.82. It is
165.1" from the BAT position.
****THIS SOURCE IS OUTSIDE XRT ERROR CIRCLE--USE WITH CAUTION***
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 138 seconds after the BAT trigger. There is a candidate afterglow in
the list of sources generated on-board at
RA(J2000) = 23:09:16.31 = 347.31795
DEC(J2000) = +56:16:51.7 = 56.28103
with a 90%-confidence error radius of about 1.10 arc sec. The estimated
magnitude is 17.82 with a 1-sigma error of about 0.35. No correction has been
made for the large, but uncertain, extinction expected.
Report rejected UVOT sources within 10 arcsec XRT position.
Such sources are usually NOT the afterglow.
****THIS SOURCE NEAR XRT POSITION WAS REJECTED--USE WITH CAUTION****
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 138 seconds after the BAT trigger. There is a candidate afterglow in
the list of sources generated on-board at
RA(J2000) = 23:08:53.21 = 347.22169
DEC(J2000) = +56:17:55.4 = 56.29872
with a 90%-confidence error radius of about 1.10 arc sec. This position is 9.54
arc sec. from the center of the XRT error circle. The estimated magnitude is
17.75 with a 1-sigma error of about 0.35. No correction has been made for the
large, but uncertain, extinction expected.
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?
634216442 137 WHITE srclist found no candidates.
634216442 137 WHITE image found no candidates.
List afterglow candidates for other finding charts.
634216600 295 U srclist found no candidates.
634216600 295 U image found no candidates.
------- Tokens for Quick GCN -------