image overlap message for exposure 1 of trigger 977310
uvot_overlap.pl vrs. 2010-12-20b fem started at 200612d20h13m27s888402usUT
The observation of trigger 977310 started 2020-06-12T04:41:37.8
Examining file ./977310_g119_uvot_sky_image.fits
The exposure ID is 613629697
The exposure time is 149.846 (seconds)
The filter is WHITE.
The uvot region is centered at (302.7104,-45.3366) with a roll angle of 109.1
It is square with sides of 2.68 arc min. for an area of 7.17 sq arc min
The BAT error circle is centered at (302.6810,-45.3570) with a radius of 3.000 arc min
This is 1.744 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 6.68 sq. arc min or 0.24 of the BAT error circle
The XRT error circle is centered at (302.7020,-45.3355) with a radius of 0.025 arc min
This is 0.361 arc min from the center of the uvot region
The area of the XRT error circle is 0.002 sq. arc min
The UVOT/XRT overlap is 0.002 sq. arc min or 1.00 of the XRT error circle
image afterglow message for exposure 1 of trigger 977310
find_uvot_ag.pl vrs. 2017-02-17 fem started at 200612d20h13m36s572323usUT
Observation start time is 2020-06-12T04:41:37.8
Examining file ./977310_g119_uvot_catalog_image.fits
The exposure ID is 613629697
The exposure is 149.846 sec.
The bin size is 2 pixels
The filter is WHITE
There are 14 detected source(s) for 977310_g119
Aspect correction adds 0.00161 degrees (0.386 sec of time = 4.07 arc sec) to RA
Aspect correction adds -0.00062 degrees (-2.23 arcsec) to Dec
Total aspect correction is 4.64 arcsec
Star catalogs centered at 302.7096 , -45.3365 with radius 2.61 arc min.
n_usno: 121 n_gsc: 0
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 10.6974
RA DEC Mag Color
bright star 0: 302.75555 (20:11:01.33) -45.31954 (-45:19:10.3) 10.70 USNO-V
Mean distance difference (CAT_DELTA) for 13 matched entries is 0.638" for 977310_g119
Mean and std. dev of mag. difference (MAG_DELTA) are 1.332 and 0.393 for 977310_g119
Found 1 entries without IDs and 1 entries that are acceptable afterglow candidates for 977310_g119.
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=302.6810 (20:10:43.44) DEC=-45.3570 (-45:21:25.2)
XRT distances are from RA=302.7020 (20:10:48.49) DEC=-45.3355 (-45:20:07.8)
-----------------
Entry 2 in the list of sources is a candidate afterglow for 977310_g119 with genie
ra=302.69389 (20:10:46.53) dec=-45.34472 (-45:20:41.0) +/- 0.6" mag=17.71+/-0.14
dist=39.1 REFID=13 major=1.2 minor=0.9 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 54.9 arc sec from the BAT position.
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
302.6932 -45.3437 4.2 -1 USNO-B1 19.17 16.29 17.57
302.6936 -45.3443 1.8 -1 USNO-B1 17.14 15.33 16.13 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 3.5" or brighter than 12 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 1.1385379E+05 counts in the bkg source region of 5771.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 19.729 counts/pixel (5-sig UL in 4" is 19.73 mag) for 977310_g119
There are 3940.9016 counts in the xrt source region of 199.00000 pixels.
Rate in xrt region with 8 arcsec radius is 19.804 counts/pixel for 977310_g119
There are 22861.916 counts in the xrt_bkg source region of 1155.0000 pixels.
Rate in xrt_bkg region from 15 to 25 arcsec is 19.794 counts/pixel (5-sig UL in 4" is 19.73 mag) for 977310_g119
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 20.29, XRT distances < 5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 977310_613629697_200612d20h13m36s572323usUT_bkg.region
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(302.7104,-45.3366,45")
fk5;-circle(302.701645419157,-45.3306740056555,6")
fk5;-circle(302.715906631922,-45.3405833027344,6")
fk5;-circle(302.693892956207,-45.3447245817273,6")
fk5;-circle(302.721382756338,-45.3345235655913,6")
fk5;-circle(302.716148269767,-45.3433376197289,6")
fk5;-circle(302.721796739339,-45.3458164333866,6")
fk5;-circle(302.728989057413,-45.3360648204154,6")
Region file: 977310_613629697_200612d20h13m36s572323usUT_xrt.region
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(302.70204,-45.33550,8")
Region file: 977310_613629697_200612d20h13m36s572323usUT_xrt_bkg.region
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(302.70204,-45.33550,25")
fk5;-circle(302.70204,-45.33550,15")
fk5;-circle(302.701645419157,-45.3306740056555,6")
image paragraph message for exposure 1 of trigger 977310
------ Start for Possible Stand-alone Circular ----
In response to GRB200612 (Swift/BAT trigger 977310) at 04:39:37 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 95 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 977310 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 200612d20h13m41s278659usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=977310
-expid=613629697 -meonly -msg_image
Results from standard processing of UVOT TDRSS data for this trigger should be
available at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/977310/
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 613629697.76682 or about 2020:164:04:41:32 UT
Found 594 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 11% of the srclist region. Found 81 sources in
srclist catalog. Found 30 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 14 source(s) in Genie image catalog. Found 1 Genie image source(s)
without IDs. There are 0 good candidate(s) in the Genie image catalog. Good
candidates must be brighter than 20.29 mag. Found 117 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
11% of the Genie image region.
Genie image analysis:
Found 113853.8 counts in the large background region of 5771.0 pixels or a rate
of 19.729 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 19.73 mag. for a
4-arcsec aperture.
Found 3940.9 counts in the XRT position region of 199.0 pixels or a rate of
19.804 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 0.013 +/- 0.453 (1-sigma) cps or
24.51 mag and a range from 20.61 to 99.99 mag. The 3-sigma UL at the XRT
position is 1.372 cps or 19.44 mag. The closest srclist source has ra= 302.7014
dec= -45.3309 mag=17.39 sep=16.73". The closest Genie source has ra= 302.7016
dec= -45.3307 mag=16.61 sep=17.40".
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?
613629697 94 WHITE srclist found no candidates.
613629697 94 WHITE image found no candidates.
List afterglow candidates for other finding charts.
613629909 306 U srclist found no candidates.
613629909 306 U image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: -45.33550
GRB_ERROR: 5
GRB_RA: 302.70204
IMAGE_START_TIME: 04:41:32
MAGNITUDE: 19.4
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT