srclist overlap message for exposure 1 of trigger 950330
uvot_overlap.pl vrs. 2010-12-20b fem started at 200122d05h01m35s915738usUT
The observation of trigger 950330 started 2020-01-22T01:42:46.6
Examining file ./950330_g105_uvot_sky_srclist.fits
The exposure ID is 601350166
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (209.9908,27.5664) 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 0.521 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 (210.0181,27.5488) with a radius of 0.028 arc min
This is 1.796 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 1 of trigger 950330
find_uvot_ag.pl vrs. 2017-02-17 fem started at 200122d05h01m39s769835usUT
Observation start time is 2020-01-22T01:42:46.6
Examining file ./950330_g105_uvot_catalog_srclist.fits
The exposure ID is 601350166
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 15 detected source(s) for 950330_g105
Aspect correction adds 0.00158 degrees (0.379 sec of time = 5.04 arc sec) to RA
Aspect correction adds -0.00167 degrees (-6.00 arcsec) to Dec
Total aspect correction is 7.84 arcsec
Star catalogs centered at 209.9821 , 27.5622 with radius 5.43 arc min.
n_usno: 294 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 14 matched entries is 0.572" for 950330_g105
Mean and std. dev of mag. difference (MAG_DELTA) are 1.712 and 1.063 for 950330_g105
Found 1 entries without IDs and 1 entries that are acceptable afterglow candidates for 950330_g105.
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.
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 10 in the list of sources is a candidate afterglow for 950330_g105 with 5x5 stamp
ra=209.95076 (13:59:48.18) dec=27.53377 (+27:32:01.6) +/- 1.1" mag=20.30+/-0.35
dist=221.6 REFID=15
*** The position of this source is inconsistent with the XRT position.
The position is 150.9 arc sec from the BAT position.
src: 10 srclist_match has ID
src: 10 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
209.9523 27.5340 5.0 -1 USNO-B1 99.99 19.60 99.99
209.9514 27.5339 2.0 -1 USNO-B1 19.05 17.45 18.16 *
209.9485 27.5320 9.7 -1 USNO-B1 20.71 19.71 20.16
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 19.22, 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 1 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 150 seconds with the White filter
starting 81 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 19.6 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 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 200122d05h01m42s768457usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=950330
-expid=601350166 -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. XRT position found for Genie image. BAT
position found.
UVOT exposure began at MET 601350166.55966 or about 2020:022:01:42:41 UT
Found 290 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 6% of the srclist region. Found 15 sources in
srclist catalog. Found 1 srclist source(s) without IDs. There are 0 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
19.22 mag.
Found 5 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 20.80 mag. Found 63 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 8% of the
Genie image region.
Genie image analysis:
Found 46153.5 counts in the large background region of 6085.0 pixels or a rate
of 7.585 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 20.25 mag. for a
4-arcsec aperture.
Found 1440.3 counts in the XRT position region of 198.0 pixels or a rate of
7.274 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is -0.559 +/- 0.276 (1-sigma) cps. The
3-sigma UL at the XRT position is 0.827 cps or 19.99 mag. The closest srclist
source has ra= 210.0116 dec= 27.5529 mag=16.53 sep=25.46". The closest Genie
source has ra= 210.0178 dec= 27.5429 mag=19.71 sep=21.49".
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?
601350166 81 WHITE srclist found no candidates.
601350166 81 WHITE image found no candidates.
List afterglow candidates for other finding charts.
601350378 293 U srclist found no candidates.
601350378 293 ? image data are not available.
601350958 873 WHITE srclist found no candidates.
601350958 873 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 27.54883
GRB_ERROR: 5
GRB_RA: 210.01808
IMAGE_START_TIME: 01:42:41
MAGNITUDE: 20.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT