srclist overlap message for exposure 2 of trigger 1038247
uvot_overlap.pl vrs. 2010-12-20b fem started at 210324d09h57m36s449251usUT
The observation of trigger 1038247 started 2021-03-23T22:07:47.0
Examining file ./1038247_g328_uvot_sky_srclist.fits
The exposure ID is 638230067
The exposure time is undefined.
The filter is U.
The uvot region is centered at (317.9589,25.3764) with a roll angle of 111.5
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 (317.9520,25.3780) with a radius of 3.000 arc min
This is 0.385 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 28.27 sq. arc min or 1.00 of the BAT error circle
The XRT error circle is centered at (317.9467,25.3693) with a radius of 0.027 arc min
This is 0.788 arc min from the center of the uvot region
The area of the XRT error circle is 0.002 sq. arc min
The UVOT/XRT overlap is 0.002 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 2 of trigger 1038247
find_uvot_ag.pl vrs. 2020-10-30 fem started at 210324d09h57m49s785087usUT
Observation start time is 2021-03-23T22:07:47.0
Examining file ./1038247_g328_uvot_catalog_srclist.fits
The exposure ID is 638230067
The exposure is 249.935 sec.
The bin size is 2 pixels
The filter is U
There are 190 detected source(s) for 1038247_g328
*** WARNING -- the sources have filled the available telemetry buffer (190).
srclist_overlap returned: bat_overlap 1.000
srclist_overlap returned: xrt_overlap 1.000
Dimmest detected source in 1038247_g328 has mag 18.30
Aspect correction adds 0.00113 degrees (0.271 sec of time = 3.67 arc sec) to RA
Aspect correction adds -0.00071 degrees (-2.54 arcsec) to Dec
Total aspect correction is 4.47 arcsec
Star catalogs centered at 317.9486 , 25.3764 with radius 8.74 arc min.
n_usno: 1728 n_gsc: 0
*** WARNING -- bright star catalog has 6 entries brighter than 12 mag
The brightest has mag 9.255
RA DEC Mag Color
bright star 0: 317.98206 (21:11:55.69) 25.39626 (+25:23:46.6) 9.25 USNO-V
bright star 1: 318.00687 (21:12:01.65) 25.33339 (+25:20:00.2) 11.69 USNO-V
bright star 2: 318.02569 (21:12:06.17) 25.37693 (+25:22:37.0) 11.63 USNO-V
bright star 3: 317.96048 (21:11:50.52) 25.45308 (+25:27:11.1) 11.48 USNO-V
bright star 4: 318.04293 (21:12:10.30) 25.31007 (+25:18:36.2) 10.34 USNO-V
bright star 5: 318.03915 (21:12:09.40) 25.28093 (+25:16:51.4) 10.80 USNO-V
Mean distance difference (CAT_DELTA) for 141 matched entries is 0.739" for 1038247_g328
Mean and std. dev of mag. difference (MAG_DELTA) are 1.370 and 0.672 for 1038247_g328
Found 50 entries without IDs and 0 entries that are acceptable afterglow candidates for 1038247_g328.
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.
46 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=317.9520 (21:11:48.48) DEC=25.3780 (+25:22:40.8)
XRT distances are from RA=317.9467 (21:11:47.20) DEC=25.3693 (+25:22:09.5)
*** WARNING 26 per cent of entries have no IDs.
Found NO acceptable entries.
Unidentified entry closest to XRT position is no. 8:
ra=317.97709 dec= 25.39238 +/- 1.1" mag=17.59+/-0.35 dist=129.2 REFID=124
Found 0 entries in star catalog(s) within 10" of the XRT position.
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 18.12, XRT distances < 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 1038247
SRCLIST PROBLEM: srclist filled telemetry buffer
------ Start for Possible Stand-alone Circular ----
In response to GRB210323 (Swift/BAT trigger 1038247) at 22:02:18 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
301 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 19.2 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 18.0 mag. No
correction has been made for the expected extinction corresponding to E(B-V) of
0.131.
------- notes for trigger 1038247 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 210324d09h57m53s012558usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1038247
-expid=638230067 -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/1038247/
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 638230067.02134 or about 2021:082:22:07:42 UT
Found 1724 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 15% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 50 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 20 source(s) in Genie image catalog. Found 8 Genie image source(s)
without IDs. There are 0 good candidate(s) in the Genie image catalog. Good
candidates must be brighter than 20.14 mag. Found 177 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
16% of the Genie image region.
Genie image analysis:
Found 27888.4 counts in the large background region of 5537.0 pixels or a rate
of 5.037 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 19.44 mag. for a
4-arcsec aperture.
Found 993.0 counts in the XRT position region of 201.0 pixels or a rate of
4.940 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 0.312 +/- 0.136 (1-sigma) cps or
19.45 mag and a range from 19.06 to 20.07 mag. The 3-sigma UL at the XRT
position is 0.720 cps or 18.55 mag. The number of srclist sources filled the
available telemetry. The weakest source detected was 18.30 mag. The closest
srclist source has ra= 317.9317 dec= 25.3718 mag=17.45 sep=49.43". The closest
Genie source has ra= 317.9534 dec= 25.3675 mag=19.12 sep=22.68".
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?
638230067 301 U srclist found no candidates.
638230067 301 U image found no candidates.
List afterglow candidates for other finding charts.
638229853 87 WHITE srclist found no candidates.
638229853 87 WHITE image found no candidates.
638230643 877 WHITE srclist found no candidates.
638230643 877 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: u
GRB_DEC: 25.36931
GRB_ERROR: 5
GRB_RA: 317.94667
IMAGE_START_TIME: 22:07:42
MAGNITUDE: 18.6
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT