srclist overlap message for exposure 1 of trigger 1156572
uvot_overlap.pl vrs. 2010-12-20b fem started at 230228d17h11m05s957383usUT
The observation of trigger 1156572 started 2023-02-28T05:53:23.0
Examining file ./1156572_g699256402_uvot_sky_srclist.fits
The exposure ID is 699256402
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (18.3995,44.4824) with a roll angle of 222.8
It is square with sides of 8.03 arc min. for an area of 64.51 sq arc min
The BAT error circle is centered at (18.4030,44.4890) with a radius of 3.000 arc min
This is 0.422 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 (18.3781,44.4829) with a radius of 0.035 arc min
This is 0.914 arc min from the center of the uvot region
The area of the XRT error circle is 0.004 sq. arc min
The UVOT/XRT overlap is 0.004 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 1 of trigger 1156572
find_uvot_ag.pl vrs. 2020-10-30 fem started at 230228d17h11m08s080441usUT
Observation start time is 2023-02-28T05:56:56.2
Examining file ./1156572_g365_uvot_catalog_srclist.fits
The exposure ID is 699256616
The exposure is 249.935 sec.
The bin size is 2 pixels
The filter is U
There are 190 detected source(s) for 1156572_g365
*** 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 1156572_g365 has mag 18.47
Aspect correction adds -0.00076 degrees (-0.182 sec of time = -1.95 arc sec) to RA
Aspect correction adds -0.00087 degrees (-3.12 arcsec) to Dec
Total aspect correction is 3.68 arcsec
Star catalogs centered at 18.4115 , 44.4790 with radius 8.97 arc min.
n_usno: 1340 n_gsc: 0
*** WARNING -- bright star catalog has 6 entries brighter than 12 mag
The brightest has mag 9.34366
RA DEC Mag Color
bright star 0: 18.33061 (01:13:19.35) 44.44144 (+44:26:29.2) 9.34 USNO-V
bright star 1: 18.48068 (01:13:55.36) 44.52792 (+44:31:40.5) 11.48 USNO-V
bright star 2: 18.33298 (01:13:19.91) 44.43665 (+44:26:11.9) 10.09 USNO-V
bright star 3: 18.51393 (01:14:03.34) 44.49500 (+44:29:42.0) 11.66 USNO-V
bright star 4: 18.38956 (01:13:33.49) 44.39164 (+44:23:29.9) 11.53 USNO-V
bright star 5: 18.34394 (01:13:22.55) 44.61059 (+44:36:38.1) 11.37 USNO-V
Mean distance difference (CAT_DELTA) for 115 matched entries is 0.682" for 1156572_g365
Mean and std. dev of mag. difference (MAG_DELTA) are 1.101 and 0.668 for 1156572_g365
Found 76 entries without IDs and 3 entries that are acceptable afterglow candidates for 1156572_g365.
Acceptable entries have no ID, XRT distances < 5.25", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
59 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=18.4030 (01:13:36.72) DEC=44.4890 (+44:29:20.4)
XRT distances are from RA=18.3781 (01:13:30.75) DEC=44.4829 (+44:28:58.5)
*** WARNING 40 per cent of entries have no IDs.
-----------------
Entry 1 in the list of sources is a candidate afterglow for 1156572_g365 with 1x1 stamp
ra=18.39716 (01:13:35.32) dec=44.49403 (+44:29:38.5) +/- 1.1" mag=18.30+/-0.35
dist=63.2 REFID=181
*** The position of this source is inconsistent with the XRT position.
The position is 23.5 arc sec from the BAT position.
src: 1 distr. of nearby unmatched sources: 0 0 0 0 0
Found 3 entries in star catalog(s) within 20.0" of the candidate.
printing all entries
(Entries within 2 arc sec of a source list entry are considered a match)
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
18.4014 44.4940 10.8 -1 USNO-B1 16.73 15.59 16.10
18.3960 44.4938 3.2 -1 USNO-B1 14.41 13.50 13.90 *
18.3917 44.4946 14.1 -1 USNO-B1 21.11 18.84 19.85
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 7 in the list of sources is a candidate afterglow for 1156572_g365 with 1x1 stamp
ra=18.37527 (01:13:30.06) dec=44.47547 (+44:28:31.7) +/- 1.1" mag=17.89+/-0.35
dist=27.8 REFID=150
*** The position of this source is inconsistent with the XRT position.
The position is 86.3 arc sec from the BAT position.
src: 7 distr. of nearby unmatched sources: 1 0 0 0 0
Found 4 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
18.3820 44.4758 17.2 -1 USNO-B1 14.65 14.14 14.37
18.3789 44.4743 10.3 -1 USNO-B1 20.60 18.37 19.36
18.3783 44.4745 8.4 -1 USNO-B1 19.64 17.95 18.70
18.3745 44.4742 4.9 -1 USNO-B1 12.99 11.59 12.21 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 8 in the list of sources is a candidate afterglow for 1156572_g365 with 1x1 stamp
ra=18.37401 (01:13:29.76) dec=44.47515 (+44:28:30.6) +/- 1.1" mag=18.41+/-0.35
dist=29.9 REFID=168
*** The position of this source is inconsistent with the XRT position.
The position is 89.6 arc sec from the BAT position.
src: 8 distr. of nearby unmatched sources: 1 0 0 0 0
Found 3 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
18.3789 44.4743 13.0 -1 USNO-B1 20.60 18.37 19.36
18.3783 44.4745 11.1 -1 USNO-B1 19.64 17.95 18.70
18.3745 44.4742 3.5 -1 USNO-B1 12.99 11.59 12.21 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
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 < 5.25",
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 1 of trigger 1156572
SRCLIST PROBLEM: srclist filled telemetry buffer
------ Start for Possible Stand-alone Circular ----
In response to GRB230228 (Swift/BAT trigger 1156572) at 05:50:50 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
335 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
0.085.
------- notes for trigger 1156572 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 230228d17h11m11s605128usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1156572
-expid=699256616 -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/1156572/
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 699256616.20048 or about 2023:059:05:56:51 UT
Found 1336 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 11% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 76 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 8 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 20.17 mag. Found 59 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 7% of the
Genie image region.
Genie image analysis:
Found 27631.7 counts in the large background region of 5752.0 pixels or a rate
of 4.804 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 955.8 counts in the XRT position region of 199.0 pixels or a rate of
4.803 counts/pixel in a radius of 8.0 arcsec. The net count rate (using large
background region) at the XRT position is -0.001 +/- 0.126 (1-sigma) cps. The
3-sigma UL at the XRT position is 0.377 cps or 19.22 mag. The number of srclist
sources filled the available telemetry. The weakest source detected was 18.47
mag. The closest srclist source has ra= 18.3753 dec= 44.4755 mag=17.89
sep=27.81". The closest Genie source has ra= 18.3819 dec= 44.4757 mag=14.81
sep=27.91".
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?
699256616 ???? U srclist found no candidates.
699256616 ???? U image found no candidates.
List afterglow candidates for other finding charts.
699256402 ???? WHITE srclist found no candidates.
699256402 ???? WHITE image found no candidates.
699257146 ???? WHITE srclist found no candidates.
699257146 ???? WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: u
GRB_DEC: 44.48292
GRB_ERROR: 5.25
GRB_RA: 18.37813
IMAGE_START_TIME: 05:56:51
MAGNITUDE: 19.2
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT