image overlap message for exposure 2 of trigger 1015088
uvot_overlap.pl vrs. 2010-12-20b fem started at 201229d14h55m07s495783usUT
The observation of trigger 1015088 started 2020-12-28T11:04:31.9
Examining file ./1015088_g300_uvot_sky_image.fits
The exposure ID is 630932671
The exposure time is 249.935 (seconds)
The filter is U.
The uvot region is centered at (210.7147,48.1959) with a roll angle of 121.2
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 (210.7080,48.1970) with a radius of 3.000 arc min
This is 0.276 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 7.17 sq. arc min or 0.25 of the BAT error circle
The XRT error circle is centered at (210.6885,48.1977) with a radius of 0.028 arc min
This is 1.056 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
image afterglow message for exposure 2 of trigger 1015088
find_uvot_ag.pl vrs. 2020-10-30 fem started at 201229d14h55m23s283642usUT
Observation start time is 2020-12-28T11:04:31.9
Examining file ./1015088_g300_uvot_catalog_image.fits
The exposure ID is 630932671
The exposure is 249.935 sec.
The bin size is 2 pixels
The filter is U
There are 3 detected source(s) for 1015088_g300
Aspect correction adds -0.00007 degrees (-0.016 sec of time = -0.16 arc sec) to RA
Aspect correction adds -0.00103 degrees (-3.70 arcsec) to Dec
Total aspect correction is 3.71 arcsec
Star catalogs centered at 210.6985 , 48.1937 with radius 2.19 arc min.
n_usno: 48 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 2 matched entries is 0.531" for 1015088_g300
Mean and std. dev of mag. difference (MAG_DELTA) are 0.937 and 0.213 for 1015088_g300
Found 1 entries without IDs and 1 entries that are acceptable afterglow candidates for 1015088_g300.
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=210.7080 (14:02:49.92) DEC=48.1970 (+48:11:49.2)
XRT distances are from RA=210.6885 (14:02:45.23) DEC=48.1977 (+48:11:51.9)
*** WARNING 33 per cent of entries have no IDs.
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1015088_g300 with genie
ra=210.68900 (14:02:45.36) dec=48.19813 (+48:11:53.3) +/- 0.8" mag=18.11+/-0.16
dist=1.9 REFID=3 major=1.1 minor=0.9 flag=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
210.6914 48.2000 8.9 -1 USNO-B1 21.38 19.88 20.55
uvot_check_outside found 13 of 13 good pixels
##### This source remains a candidate #####
It has no entries 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:
Unmatched source ra=210.68900 (14:02:45.36) dec=48.19813 (+48:11:53.3) +/- 0.8" mag=18.11+/-0.16 dist=1.9 REFID=3 flag=0
There are 12367.561 counts in the bkg source region of 6320.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 1.957 counts/pixel (5-sig UL in 4" is 20.10 mag) for 1015088_g300
There are 326.95264 counts in the src source region of 51.000000 pixels.
Rate in src region with 4 arcsec radius is 6.411 counts/pixel for 1015088_g300
source too far from center -- do not compute local background.
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 20.66, XRT distances < 5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 1 good candidate(s) found.
Region file: 1015088_630932671_201229d14h55m23s283642usUT_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(210.7147,48.1959,45")
Region file: 1015088_630932671_201229d14h55m23s283642usUT_cand_src.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(210.689004243761,48.1981283045342,4")
image paragraph message for exposure 2 of trigger 1015088
------ Start for Possible Stand-alone Circular ----
In response to GRB201229 (Swift/BAT trigger 1015088) at 10:59:30 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
274 seconds after the BAT trigger. There is a candidate afterglow in the
rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 14:02:45.36 = 210.68900
DEC(J2000) = +48:11:53.3 = 48.19813
with a 90%-confidence error radius of about 0.77 arc sec. This position is 1.9
arc sec. from the center of the XRT error circle. The estimated magnitude is
18.11 with a 1-sigma error of about 0.16. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.01.
------- notes for trigger 1015088 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 201229d14h55m28s657835usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1015088
-expid=630932671 -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/1015088/
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 630932671.9198 or about 2020:364:11:04:26 UT
Found 452 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 5% of the srclist region. Found 42 sources in
srclist catalog. Found 15 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 3 source(s) in Genie image catalog. 1 source(s) are within 10.0" of the
xrt position. Found 1 Genie image source(s) without IDs. There are 1 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
20.66 mag. Found 44 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 6% of the Genie image region.
Found 1 srclist source(s) within 10.0" of the XRT position.
The brightest such source has ra= 210.6889 dec= 48.1982 mag=18.52 sep=1.94".
The closest srclist source has ra= 210.6889 dec= 48.1982 mag=18.52 sep=1.94".
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?
630932671 273 U 210.68893 48.19819 18.52/18.1 1.9 srclist Yes
630932671 273 U 210.68900 48.19813 18.11/20.7 1.9 image Yes
List afterglow candidates for other finding charts.
630932513 115 WHITE 210.68908 48.19812 18.59/19.2 2.0 srclist Yes
630932513 115 WHITE 210.68921 48.19828 18.19/20.9 2.6 image Yes
630933275 877 WHITE srclist found no candidates.
630933275 877 WHITE 210.68902 48.19815 19.10/20.5 2.1 image Yes
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: u
GRB_DEC: 48.19813
GRB_ERROR: 0.77
GRB_RA: 210.68900
IMAGE_START_TIME: 11:04:26
MAGNITUDE: 18.11
MAG_ERROR: 0.16
MESSAGE_TYPE: ACK
SOURCE: XRT