image overlap message for exposure 3 of trigger 1015088
uvot_overlap.pl vrs. 2010-12-20b fem started at 201229d14h55m08s201560usUT
The observation of trigger 1015088 started 2020-12-28T11:14:35.6
Examining file ./1015088_g904_uvot_sky_image.fits
The exposure ID is 630933275
The exposure time is 149.868 (seconds)
The filter is WHITE.
The uvot region is centered at (210.7148,48.1951) 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 0.294 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 1.065 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 3 of trigger 1015088
find_uvot_ag.pl vrs. 2020-10-30 fem started at 201229d14h55m38s392183usUT
Observation start time is 2020-12-28T11:14:35.6
Examining file ./1015088_g904_uvot_catalog_image.fits
The exposure ID is 630933275
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 4 detected source(s) for 1015088_g904
Aspect correction adds -0.00069 degrees (-0.166 sec of time = -1.66 arc sec) to RA
Aspect correction adds -0.00134 degrees (-4.83 arcsec) to Dec
Total aspect correction is 5.11 arcsec
Star catalogs centered at 210.6984 , 48.1950 with radius 2.17 arc min.
n_usno: 45 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 3 matched entries is 0.485" for 1015088_g904
Mean and std. dev of mag. difference (MAG_DELTA) are 0.485 and 0.224 for 1015088_g904
Found 1 entries without IDs and 1 entries that are acceptable afterglow candidates for 1015088_g904.
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)
-----------------
Entry 1 in the list of sources is a candidate afterglow for 1015088_g904 with genie
ra=210.68902 (14:02:45.36) dec=48.19815 (+48:11:53.3) +/- 0.8" mag=19.10+/-0.16
dist=2.0 REFID=4 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 8.8 -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=210.68902 (14:02:45.36) dec=48.19815 (+48:11:53.3) +/- 0.8" mag=19.10+/-0.16 dist=2.0 REFID=4 flag=0
There are 78534.805 counts in the bkg source region of 6205.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 12.657 counts/pixel (5-sig UL in 4" is 19.97 mag) for 1015088_g904
There are 936.62244 counts in the src source region of 50.000000 pixels.
Rate in src region with 4 arcsec radius is 18.732 counts/pixel for 1015088_g904
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 20.53, 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_630933275_201229d14h55m38s392183usUT_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(210.7148,48.1951,45")
fk5;-circle(210.706508510239,48.2015222962337,6")
Region file: 1015088_630933275_201229d14h55m38s392183usUT_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(210.689017250686,48.1981475461602,4")
image paragraph message for exposure 3 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 150 seconds with the White filter
starting 878 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 = 210.68902
DEC(J2000) = +48:11:53.3 = 48.19815
with a 90%-confidence error radius of about 0.77 arc sec. This position is 2.0
arc sec. from the center of the XRT error circle. The estimated magnitude is
19.10 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 201229d14h55m43s362883usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1015088
-expid=630933275 -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 630933275.60802 or about 2020:364:11:14:30 UT
Found 486 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 4% of the srclist region. Found 57 sources in
srclist catalog. Found 21 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 4 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
20.53 mag. Found 41 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 6% of the Genie image region. The
closest srclist source has ra= 210.6707 dec= 48.2012 mag=16.87 sep=44.46".
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?
630933275 877 WHITE srclist found no candidates.
630933275 877 WHITE 210.68902 48.19815 19.10/20.5 2.0 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
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
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 48.19815
GRB_ERROR: 0.77
GRB_RA: 210.68902
IMAGE_START_TIME: 11:14:30
MAGNITUDE: 19.10
MAG_ERROR: 0.16
MESSAGE_TYPE: ACK
SOURCE: XRT