srclist overlap message for exposure 2 of trigger 1150107
uvot_overlap.pl vrs. 2010-12-20b fem started at 230121d05h58m21s419954usUT
The observation of trigger 1150107 started 2023-01-21T05:49:29.5
Examining file 1150107_g311_uvot_sky_srclist.fits
The exposure ID is 695972969
The exposure time is undefined.
The filter is U.
The uvot region is centered at (70.2428,44.5292) with a roll angle of 281.6
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 (70.2670,44.5250) with a radius of 3.000 arc min
This is 1.067 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 (70.2493,44.5309) with a radius of 0.083 arc min
This is 0.296 arc min from the center of the uvot region
The area of the XRT error circle is 0.022 sq. arc min
The UVOT/XRT overlap is 0.022 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 2 of trigger 1150107
find_uvot_ag.pl vrs. 2020-10-30 fem started at 230121d05h58m22s538670usUT
Observation start time is 2023-01-21T05:49:29.5
Examining file 1150107_g311_uvot_catalog_srclist.fits
The exposure ID is 695972969
The exposure is 250.000 sec.
The bin size is 2 pixels
The filter is U
There are 103 detected source(s) for 1150107_g311
Aspect correction adds -0.00080 degrees (-0.192 sec of time = -2.05 arc sec) to RA
Aspect correction adds -0.00077 degrees (-2.77 arcsec) to Dec
Total aspect correction is 3.45 arcsec
Star catalogs centered at 70.2343 , 44.5300 with radius 6.21 arc min.
n_usno: 1033 n_gsc: 0
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 10.54854
RA DEC Mag Color
bright star 0: 70.24719 (04:40:59.33) 44.53037 (+44:31:49.3) 10.55 USNO-V
Mean distance difference (CAT_DELTA) for 40 matched entries is 0.774" for 1150107_g311
Mean and std. dev of mag. difference (MAG_DELTA) are 2.241 and 0.640 for 1150107_g311
Found 64 entries without IDs and 3 entries that are acceptable afterglow candidates for 1150107_g311.
Acceptable entries have no ID, XRT distances < 12.5", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
56 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=70.2670 (04:41:04.08) DEC=44.5250 (+44:31:30.0)
XRT distances are from RA=70.2493 (04:40:59.83) DEC=44.5309 (+44:31:51.2)
*** WARNING 62 per cent of entries have no IDs.
-----------------
Entry 61 in the list of sources is a candidate afterglow for 1150107_g311 with 3x3 stamp
ra=70.24834 (04:40:59.60) dec=44.50427 (+44:30:15.4) +/- 1.1" mag=19.23+/-0.35
dist=95.9 REFID=98
*** The position of this source is inconsistent with the XRT position.
The position is 90.1 arc sec from the BAT position.
src: 61 distr. of nearby unmatched sources: 0 0 0 0 0
Found 2 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
70.2439 44.5051 11.8 -1 USNO-B1 20.05 17.18 18.45
70.2484 44.5027 5.6 -1 USNO-B1 14.41 13.32 13.80
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 65 in the list of sources is a candidate afterglow for 1150107_g311 with 3x3 stamp
ra=70.23281 (04:40:55.87) dec=44.50167 (+44:30:06.0) +/- 1.1" mag=18.87+/-0.35
dist=113.4 REFID=60
*** The position of this source is inconsistent with the XRT position.
The position is 123.3 arc sec from the BAT position.
src: 65 srclist_match has ID
src: 65 distr. of nearby unmatched sources: 1 0 0 0 0
Found 2 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
70.2284 44.5035 13.2 -1 USNO-B1 20.01 18.34 19.08
70.2331 44.5013 1.5 -1 USNO-B1 15.60 13.55 14.46 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 74 in the list of sources is a candidate afterglow for 1150107_g311 with 3x3 stamp
ra=70.27181 (04:41:05.23) dec=44.57906 (+44:34:44.6) +/- 1.1" mag=19.17+/-0.35
dist=182.7 REFID=97
*** The position of this source is inconsistent with the XRT position.
The position is 194.9 arc sec from the BAT position.
src: 74 distr. of nearby unmatched sources: 0 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
70.2689 44.5755 15.0 -1 USNO-B1 18.76 16.96 17.76
70.2712 44.5779 4.3 -1 USNO-B1 15.50 14.07 14.70
70.2750 44.5796 8.5 -1 USNO-B1 20.12 17.96 18.92
*** If XRT position is correct, then this is NOT the afterglow
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
70.2472 44.5304 5.7 -1 USNO-B1 10.98 10.20 10.55
The closest star is 5.73" away.
List UVOT sources within 10" of the XRT position:
Unmatched source ra=70.24951 (04:40:59.88) dec=44.53195 (+44:31:55.0) +/- 1.1" mag=18.42+/-0.35 dist=3.8 REFID=44
Unmatched source ra=70.24946 (04:40:59.87) dec=44.53215 (+44:31:55.7) +/- 1.1" mag=18.60+/-0.35 dist=4.5 REFID=24
Matched source ra=70.24696 (04:40:59.27) dec=44.53045 (+44:31:49.6) +/- 1.1" mag=11.91+/-0.35 dist=6.2 REFID=1
Unmatched source ra=70.25134 (04:41:00.32) dec=44.52994 (+44:31:47.8) +/- 1.1" mag=18.71+/-0.35 dist=6.3 REFID=73
Unmatched source ra=70.25194 (04:41:00.46) dec=44.53087 (+44:31:51.1) +/- 1.1" mag=18.12+/-0.35 dist=6.8 REFID=51
Unmatched source ra=70.25052 (04:41:00.13) dec=44.53299 (+44:31:58.8) +/- 1.1" mag=18.03+/-0.35 dist=8.2 REFID=18
Unmatched source ra=70.24909 (04:40:59.78) dec=44.52870 (+44:31:43.3) +/- 1.1" mag=18.87+/-0.35 dist=8.0 REFID=63
Unmatched source ra=70.24606 (04:40:59.05) dec=44.52994 (+44:31:47.8) +/- 1.1" mag=17.97+/-0.35 dist=9.0 REFID=41
Unmatched source ra=70.25271 (04:41:00.65) dec=44.53168 (+44:31:54.1) +/- 1.1" mag=18.36+/-0.35 dist=9.2 REFID=33
Unmatched source ra=70.25158 (04:41:00.38) dec=44.52887 (+44:31:43.9) +/- 1.1" mag=18.44+/-0.35 dist=9.4 REFID=37
Matched source ra=70.25287 (04:41:00.69) dec=44.53014 (+44:31:48.5) +/- 1.1" mag=18.47+/-0.35 dist=9.6 REFID=56
Unmatched source ra=70.25251 (04:41:00.60) dec=44.52943 (+44:31:46.0) +/- 1.1" mag=18.71+/-0.35 dist=9.8 REFID=49
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 18.12, XRT distances < 12.5",
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 1150107
WARNING -- because of the LARGE EXTINCTION, results should be used cautiously.
------ Start for Possible Stand-alone Circular ----
In response to GRB230121 (Swift/BAT trigger 1150107) at 05:44:17 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of nominal 250.000 seconds with the U filter
starting 281 seconds after the BAT trigger. No credible afterglow candidate has
been found in the initial data products. Data from the 2.7'x2.7' sub-image are
not available at this time. 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 large, but
uncertain, extinction expected.
------- notes for trigger 1150107 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 230121d05h58m23s846386usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1150107
-expid=695972969 -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/1150107/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
Unreliable extinction found for bat position. Unreliable extinction found for
xrt position.
*** Warning -- no exposure found, using srclist assumed value.
XRT position found for srclist. BAT position found.
UVOT exposure began at MET 695972969.46698 or about 2023:021:05:49:24 UT
Found 1029 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 18% of the srclist region. Found 103 sources in
srclist catalog. Found 64 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 12 srclist source(s) within 10.0" of the XRT position.
The brightest such source has ra= 70.2495 dec= 44.5320 mag=18.42 sep=3.83".
The closest srclist source has ra= 70.2495 dec= 44.5320 mag=18.42 sep=3.83".
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 nominal 250.000 seconds with the U filter
starting 281 seconds after the BAT trigger. There is a candidate afterglow in
the list of sources generated on-board at
RA(J2000) = 04:40:59.88 = 70.24951
DEC(J2000) = +44:31:55.0 = 44.53195
with a 90%-confidence error radius of about 1.10 arc sec. This position is 3.83
arc sec. from the center of the XRT error circle. The estimated magnitude is
18.42 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?
695972969 281 U srclist found no candidates.
695972969 281 ? image data are not available.
List afterglow candidates for other finding charts.
695972811 123 WHITE srclist found no candidates.
695972811 123 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: SRCLIST
FILTER: u
GRB_DEC: 44.53090
GRB_ERROR: 12.5
GRB_RA: 70.24930
IMAGE_START_TIME: 05:49:24
MAGNITUDE: 18.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT