srclist overlap message for exposure 2 of trigger 1061482
uvot_overlap.pl vrs. 2010-12-20b fem started at 210729d15h26m54s157507usUT
The observation of trigger 1061482 started 2021-07-24T20:19:19.4
Examining file ./1061482_g309_uvot_sky_srclist.fits
The exposure ID is 648850759
The exposure time is undefined.
The filter is U.
The uvot region is centered at (227.4021,-6.2742) with a roll angle of 288.7
It is square with sides of 12.05 arc min. for an area of 145.15 sq arc min
The BAT error circle is centered at (227.4246,-6.2786) with a radius of 1.900 arc min
This is 1.364 arc min from the center of the uvot region
The area of the BAT error circle is 11.34 sq. arc min
The UVOT/BAT overlap is 11.34 sq. arc min or 1.00 of the BAT error circle
The XRT error circle is centered at (227.4146,-6.2907) with a radius of 0.050 arc min
This is 1.238 arc min from the center of the uvot region
The area of the XRT error circle is 0.008 sq. arc min
The UVOT/XRT overlap is 0.008 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 2 of trigger 1061482
find_uvot_ag.pl vrs. 2020-10-30 fem started at 210729d15h27m08s397107usUT
Observation start time is 2021-07-24T20:19:19.4
Examining file ./1061482_g309_uvot_catalog_srclist.fits
The exposure ID is 648850759
The exposure is 230.294 sec.
The bin size is 2 pixels
The filter is U
There are 53 detected source(s) for 1061482_g309
Aspect correction adds -0.00120 degrees (-0.288 sec of time = -4.29 arc sec) to RA
Aspect correction adds 0.00093 degrees ( 3.35 arcsec) to Dec
Total aspect correction is 5.44 arcsec
Star catalogs centered at 227.3909 , -6.2662 with radius 7.76 arc min.
n_usno: 474 n_gsc: 0
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 9.29624
RA DEC Mag Color
bright star 0: 227.34825 (15:09:23.58) -6.23651 (-06:14:11.4) 9.30 USNO-V
Mean distance difference (CAT_DELTA) for 43 matched entries is 0.789" for 1061482_g309
Mean and std. dev of mag. difference (MAG_DELTA) are 1.987 and 0.897 for 1061482_g309
Found 10 entries without IDs and 0 entries that are acceptable afterglow candidates for 1061482_g309.
Acceptable entries have no ID, XRT distances < 7.5", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
3 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=227.4246 (15:09:41.90) DEC=-6.2786 (-06:16:42.9)
XRT distances are from RA=227.4146 (15:09:39.51) DEC=-6.2907 (-06:17:26.5)
Found NO acceptable entries.
Unidentified entry closest to XRT position is no. 8:
ra=227.38289 dec= -6.21966 +/- 1.1" mag=19.87+/-0.35 dist=279.8 REFID=53
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
227.4167 -6.2904 7.6 -1 USNO-B1 18.39 17.91 18.12
The closest star is 7.60" away.
List UVOT sources within 10" of the XRT position:
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 18.07, XRT distances < 7.5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
srclist paragraph message for exposure 2 of trigger 1061482
IMAGE PROBLEM: damaged image (negative pixel value)
------ Start for Possible Stand-alone Circular ----
In response to GRB210724 (Swift/BAT trigger 1061482) at 20:14:09 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 230 seconds with the U filter starting
282 seconds after the BAT trigger. No credible afterglow candidate has been
found in the initial data products. The 2.7'x2.7' sub-image processing FAILED
because of damaged image (negative pixel value). 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 0.097.
------- notes for trigger 1061482 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 210729d15h27m11s491082usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1061482
-expid=648850759 -meonly -msg_srclist
Results from standard processing of UVOT TDRSS data for this trigger should be
available at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/1061482/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
The Genie image appears to be DAMAGED with a min. value of -6180.743164.
XRT position found for srclist. XRT position found for Genie image. BAT
position found.
UVOT exposure began at MET 648850759.40742 or about 2021:205:20:19:14 UT
Found 470 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 5% of the srclist region. Found 53 sources in
srclist catalog. Found 10 srclist source(s) without IDs. There are 0 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
18.07 mag.
Found 6 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 20.39 mag. Found 44 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 6% of the
Genie image region. The Genie image is INCOMPLETE with 4826 null pixels.
The closest srclist source has ra= 227.4054 dec= -6.2859 mag=19.01 sep=37.23".
The closest Genie source has ra= 227.4056 dec= -6.2858 mag=18.73 sep=36.91".
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?
648850759 282 U srclist found no candidates.
648850759 282 U image found no candidates.
List afterglow candidates for other finding charts.
648850601 124 WHITE srclist found no candidates.
648850601 124 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: SRCLIST
FILTER: u
GRB_DEC: -6.29069
GRB_ERROR: 7.5
GRB_RA: 227.41463
IMAGE_START_TIME: 20:19:14
MAGNITUDE: 18.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT