image overlap message for exposure 3 of trigger 1054681
uvot_overlap.pl vrs. 2010-12-20b fem started at 210611d04h13m21s303725usUT
The observation of trigger 1054681 started 2021-06-10T20:06:13.0
Examining file ./1054681_g885_uvot_sky_image.fits
The exposure ID is 645048373
The exposure time is 149.868 (seconds)
The filter is WHITE.
The uvot region is centered at (243.9152,14.4027) with a roll angle of 337.9
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 (243.9390,14.3910) with a radius of 3.000 arc min
This is 1.552 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 7.01 sq. arc min or 0.25 of the BAT error circle
The XRT error circle is centered at (243.9188,14.3988) with a radius of 0.037 arc min
This is 0.315 arc min from the center of the uvot region
The area of the XRT error circle is 0.004 sq. arc min
The UVOT/XRT overlap is 0.004 sq. arc min or 1.00 of the XRT error circle
image afterglow message for exposure 3 of trigger 1054681
find_uvot_ag.pl vrs. 2020-10-30 fem started at 210611d04h13m42s166056usUT
Observation start time is 2021-06-10T20:06:13.0
Examining file ./1054681_g885_uvot_catalog_image.fits
The exposure ID is 645048373
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 8 detected source(s) for 1054681_g885
Aspect correction adds 0.00032 degrees (0.076 sec of time = 1.10 arc sec) to RA
Aspect correction adds 0.00094 degrees ( 3.38 arcsec) to Dec
Total aspect correction is 3.56 arcsec
Star catalogs centered at 243.9166 , 14.3992 with radius 2.45 arc min.
n_usno: 66 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 7 matched entries is 0.474" for 1054681_g885
Mean and std. dev of mag. difference (MAG_DELTA) are 0.775 and 0.560 for 1054681_g885
Found 2 entries without IDs and 2 entries that are acceptable afterglow candidates for 1054681_g885.
Acceptable entries have no ID, XRT distances < 5.5", 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=243.9390 (16:15:45.36) DEC=14.3910 (+14:23:27.6)
XRT distances are from RA=243.9188 (16:15:40.52) DEC=14.3988 (+14:23:55.7)
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1054681_g885 with genie
ra=243.91834 (16:15:40.40) dec=14.39912 (+14:23:56.8) +/- 0.6" mag=15.30+/-0.14
dist=2.0 REFID=5 major=1.0 minor=0.9 flag=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
243.9183 14.3979 4.5 -1 USNO-B1 21.20 20.09 20.59
243.9189 14.4037 16.6 -1 USNO-B1 20.45 19.74 20.05
243.9216 14.3952 18.2 -1 USNO-B1 99.99 20.25 99.99
uvot_check_outside found 11 of 11 good pixels
##### This source remains a candidate #####
It has no entries within 3.5" or brighter than 12 mag
-----------------
Entry 8 in the list of sources is a candidate afterglow for 1054681_g885 with genie
ra=243.89746 (16:15:35.39) dec=14.38368 (+14:23:01.2) +/- 0.8" mag=20.84+/-0.24
dist=92.3 REFID=7 major=1.3 minor=0.6 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 147.2 arc sec from the BAT position.
This source is near the edge of image (0.932)
Found 1 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
243.8972 14.3824 4.6 -1 USNO-B1 17.39 16.82 17.08 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 5.25" or brighter than 12 mag
Found 1 entries in star catalog(s) within 10" of the XRT position.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
243.9183 14.3979 3.8 -1 USNO-B1 21.20 20.09 20.59
The closest star is 3.79" away.
List UVOT sources within 10" of the XRT position:
Unmatched source ra=243.91834 (16:15:40.40) dec=14.39912 (+14:23:56.8) +/- 0.6" mag=15.30+/-0.14 dist=2.0 REFID=5 flag=0
There are 40881.672 counts in the bkg source region of 5972.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 6.846 counts/pixel (5-sig UL in 4" is 20.31 mag) for 1054681_g885
There are 7670.9971 counts in the src source region of 49.000000 pixels.
Rate in src region with 4 arcsec radius is 156.551 counts/pixel for 1054681_g885
There are 8218.0146 counts in the cand_src_bkg source region of 1162.0000 pixels.
Rate in cand_src_bkg region from 15 to 25 arcsec is 7.072 counts/pixel (5-sig UL in 4" is 20.29 mag) for 1054681_g885
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 20.86, XRT distances < 5.5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 1 good candidate(s) found.
Region file: 1054681_645048373_210611d04h13m42s166056usUT_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(243.9152,14.4027,45")
fk5;-circle(243.918338519888,14.3991153395691,6")
fk5;-circle(243.918829943064,14.4038050136881,6")
fk5;-circle(243.916076823729,14.4122651490895,6")
Region file: 1054681_645048373_210611d04h13m42s166056usUT_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(243.918338519888,14.3991153395691,4")
Region file: 1054681_645048373_210611d04h13m42s166056usUT_cand_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(243.918338519888,14.3991153395691,25")
fk5;-circle(243.918338519888,14.3991153395691,15")
fk5;-circle(243.918829943064,14.4038050136881,6")
image paragraph message for exposure 3 of trigger 1054681
Catalogued source 3.8" from XRT position may affect AG photometry.
------ Start for Possible Stand-alone Circular ----
In response to GRB210610 (Swift/BAT trigger 1054681) at 19:51:27 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 858 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 16:15:40.40 = 243.91834
DEC(J2000) = +14:23:56.8 = 14.39912
with a 90%-confidence error radius of about 0.61 arc sec. This position is 2.0
arc sec. from the center of the XRT error circle. The estimated magnitude is
15.30 with a 1-sigma error of about 0.14. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.044.
------- notes for trigger 1054681 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 210611d04h13m47s271495usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1054681
-expid=645048373 -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/1054681/
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 645048373.03694 or about 2021:161:20:06:08 UT
Found 916 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 8% of the srclist region. Found 111 sources in
srclist catalog. Found 15 srclist source(s) without IDs. There are 1 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
19.22 mag.
Found 8 source(s) in Genie image catalog. 1 source(s) are within 10.0" of the
xrt position. Found 2 Genie image source(s) without IDs. There are 1 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
20.86 mag. Found 62 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 7% of the Genie image region.
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?
645048373 858 WHITE 243.91843 14.39908 15.84/19.2 1.7 srclist Yes
645048373 858 WHITE 243.91834 14.39912 15.30/20.9 2.0 image Yes
List afterglow candidates for other finding charts.
645047606 91 WHITE 243.91843 14.39906 13.86/19.2 1.7 srclist Yes
645047606 91 WHITE 243.91836 14.39909 13.70/20.8 1.9 image Yes
645047818 303 U 243.91836 14.39924 14.46/18.1 2.3 srclist Yes
645047818 303 U 243.91973 14.39910 19.59/18.1 3.3 srclist Yes
645047818 303 U 243.91834 14.39913 13.73/20.6 2.1 image Yes
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 14.39912
GRB_ERROR: 0.61
GRB_RA: 243.91834
IMAGE_START_TIME: 20:06:08
MAGNITUDE: 15.30
MAG_ERROR: 0.14
MESSAGE_TYPE: ACK
SOURCE: XRT