srclist overlap message for exposure 2 of trigger 950330
uvot_overlap.pl vrs. 2010-12-20b fem started at 200122d05h01m36s628706usUT
The observation of trigger 950330 started 2020-01-22T01:46:18.6
Examining file ./950330_g317_uvot_sky_srclist.fits
The exposure ID is 601350378
The exposure time is undefined.
The filter is U.
The uvot region is centered at (210.0212,27.5506) with a roll angle of 106.2
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 (209.9810,27.5660) with a radius of 3.000 arc min
This is 2.330 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 24.53 sq. arc min or 0.87 of the BAT error circle
The XRT error circle is centered at (210.0181,27.5488) with a radius of 0.028 arc min
This is 0.197 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 0.003 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 2 of trigger 950330
find_uvot_ag.pl vrs. 2017-02-17 fem started at 200122d05h01m46s290171usUT
Observation start time is 2020-01-22T01:46:18.6
Examining file ./950330_g317_uvot_catalog_srclist.fits
The exposure ID is 601350378
The exposure is 249.950 sec.
The bin size is 2 pixels
The filter is U
There are 13 detected source(s) for 950330_g317
Aspect correction adds 0.00257 degrees (0.618 sec of time = 8.22 arc sec) to RA
Aspect correction adds -0.00113 degrees (-4.05 arcsec) to Dec
Total aspect correction is 9.16 arcsec
Star catalogs centered at 210.0426 , 27.5506 with radius 5.64 arc min.
n_usno: 318 n_gsc: 0
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 11.63
RA DEC Mag Color
bright star 0: 210.07504 (14:00:18.01) 27.60917 (+27:36:33.0) 11.63 USNO-B
Mean distance difference (CAT_DELTA) for 11 matched entries is 0.754" for 950330_g317
Mean and std. dev of mag. difference (MAG_DELTA) are 1.861 and 0.601 for 950330_g317
Found 2 entries without IDs and 1 entries that are acceptable afterglow candidates for 950330_g317.
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.
0 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=209.9810 (13:59:55.44) DEC=27.5660 (+27:33:57.6)
XRT distances are from RA=210.0181 (14:00:04.34) DEC=27.5488 (+27:32:55.8)
-----------------
Entry 2 in the list of sources is a candidate afterglow for 950330_g317 with 5x5 stamp
ra=210.03643 (14:00:08.74) dec=27.57499 (+27:34:30.0) +/- 1.1" mag=19.26+/-0.35
dist=110.9 REFID=10
*** The position of this source is inconsistent with the XRT position.
The position is 179.8 arc sec from the BAT position.
src: 2 distr. of nearby unmatched sources: 0 1 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
210.0370 27.5756 3.0 -1 USNO-B1 15.45 13.81 14.54 *
210.0375 27.5760 5.1 -1 USNO-B1 11.67 13.61 12.75 *
210.0383 27.5773 10.3 -1 USNO-B1 16.14 14.74 15.36
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",
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 950330
------ Start for Possible Stand-alone Circular ----
In response to GRB200122 (Swift/BAT trigger 950330) at 01:41:00 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
293 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 expected
extinction corresponding to E(B-V) of 0.03.
------- notes for trigger 950330 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 200122d05h01m47s223602usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=950330
-expid=601350378 -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/950330/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
XRT position found for srclist. BAT position found.
UVOT exposure began at MET 601350378.59032 or about 2020:022:01:46:13 UT
Found 314 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 6% of the srclist region. Found 13 sources in
srclist catalog. Found 2 srclist source(s) without IDs. There are 0 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
18.12 mag.
The closest srclist source has ra= 210.0117 dec= 27.5531 mag=16.91 sep=25.49".
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?
601350378 293 U srclist found no candidates.
601350378 293 ? image data are not available.
List afterglow candidates for other finding charts.
601350166 81 WHITE srclist found no candidates.
601350166 81 WHITE image found no candidates.
601350958 873 WHITE srclist found no candidates.
601350958 873 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: SRCLIST
FILTER: u
GRB_DEC: 27.54883
GRB_ERROR: 5
GRB_RA: 210.01808
IMAGE_START_TIME: 01:46:13
MAGNITUDE: 18.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT