srclist overlap message for exposure 1 of trigger 952164
uvot_overlap.pl vrs. 2010-12-20b fem started at 200125d14h54m43s732246usUT
The observation of trigger 952164 started 2020-01-25T11:35:02.6
Examining file ./952164_g202_uvot_sky_srclist.fits
The exposure ID is 601644902
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (228.0526,-8.1511) with a roll angle of 107.8
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 (228.0470,-8.1480) with a radius of 3.000 arc min
This is 0.382 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 (228.0480,-8.1445) with a radius of 0.042 arc min
This is 0.480 arc min from the center of the uvot region
The area of the XRT error circle is 0.005 sq. arc min
The UVOT/XRT overlap is 0.005 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 1 of trigger 952164
find_uvot_ag.pl vrs. 2017-02-17 fem started at 200125d14h54m46s821880usUT
Observation start time is 2020-01-25T11:35:02.6
Examining file ./952164_g202_uvot_catalog_srclist.fits
The exposure ID is 601644902
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 33 detected source(s) for 952164_g202
Aspect correction adds 0.00065 degrees (0.156 sec of time = 2.32 arc sec) to RA
Aspect correction adds -0.00118 degrees (-4.26 arcsec) to Dec
Total aspect correction is 4.85 arcsec
Star catalogs centered at 228.0599 , -8.1387 with radius 5.94 arc min.
n_usno: 606 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 29 matched entries is 0.520" for 952164_g202
Mean and std. dev of mag. difference (MAG_DELTA) are 1.041 and 1.371 for 952164_g202
Found 6 entries without IDs and 2 entries that are acceptable afterglow candidates for 952164_g202.
Acceptable entries have no ID, XRT distances < 6.25", 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=228.0470 (15:12:11.28) DEC=-8.1480 (-08:08:52.8)
XRT distances are from RA=228.0480 (15:12:11.52) DEC=-8.1445 (-08:08:40.3)
-----------------
Entry 0 in the list of sources is a candidate afterglow for 952164_g202 with 5x5 stamp
ra=228.04902 (15:12:11.76) dec=-8.12246 (-08:07:20.9) +/- 1.1" mag=19.19+/-0.35
dist=79.5 REFID=30
*** The position of this source is inconsistent with the XRT position.
The position is 92.2 arc sec from the BAT position.
src: 0 distr. of nearby unmatched sources: 0 0 0 0 0
Found 1 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
228.0536 -8.1198 18.8 -1 USNO-B1 21.04 20.49 20.73
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 10 in the list of sources is a candidate afterglow for 952164_g202 with 5x5 stamp
ra=228.08348 (15:12:20.03) dec=-8.11731 (-08:07:02.3) +/- 1.1" mag=19.15+/-0.35
dist=160.0 REFID=28
*** The position of this source is inconsistent with the XRT position.
The position is 170.6 arc sec from the BAT position.
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.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
228.0866 -8.1218 19.5 -1 USNO-B1 18.24 15.68 16.82
228.0853 -8.1182 7.3 -1 USNO-B1 19.56 99.99 99.99
228.0861 -8.1179 9.5 -1 USNO-B1 19.02 99.99 99.99
*** If XRT position is correct, then this is NOT the afterglow
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 19.22, XRT distances < 6.25",
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 952164
------ Start for Possible Stand-alone Circular ----
In response to GRB200125 (Swift/BAT trigger 952164) at 11:31:39 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 179 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
0.08.
------- notes for trigger 952164 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 200125d14h54m50s626211usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=952164
-expid=601644902 -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/952164/
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 601644902.64336 or about 2020:025:11:34:57 UT
Found 602 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 11% of the srclist region. Found 33 sources in
srclist catalog. Found 6 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 2 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 19.97 mag. Found 54 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 9% of the
Genie image region.
Genie image analysis:
Found 220459.5 counts in the large background region of 6305.0 pixels or a rate
of 34.966 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 19.42 mag. for a
4-arcsec aperture.
Found 6890.6 counts in the XRT position region of 196.0 pixels or a rate of
35.156 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 0.320 +/- 0.595 (1-sigma) cps or
21.02 mag and a range from 19.88 to 99.99 mag. The 3-sigma UL at the XRT
position is 2.105 cps or 18.97 mag. The closest srclist source has ra= 228.0490
dec= -8.1225 mag=19.19 sep=79.52". The closest Genie source has ra= 228.0534
dec= -8.1667 mag=18.66 sep=82.07".
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?
601644902 178 WHITE srclist found no candidates.
601644902 178 WHITE image found no candidates.
List afterglow candidates for other finding charts.
601645060 336 U srclist found no candidates.
601645060 336 U image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: -8.14453
GRB_ERROR: 6.25
GRB_RA: 228.04800
IMAGE_START_TIME: 11:34:57
MAGNITUDE: 19.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT