srclist overlap message for exposure 1 of trigger 1108208
uvot_overlap.pl vrs. 2010-12-20b fem started at 220527d22h37m38s265941usUT
The observation of trigger 1108208 started 2022-05-27T22:33:40.0
Examining file 1108208_g542_uvot_sky_srclist.fits
The exposure ID is 675383620
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (244.9851,-15.6495) with a roll angle of 2.0
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 (244.9830,-15.6560) with a radius of 3.000 arc min
This is 0.411 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 (244.9768,-15.6424) with a radius of 0.078 arc min
This is 0.643 arc min from the center of the uvot region
The area of the XRT error circle is 0.019 sq. arc min
The UVOT/XRT overlap is 0.019 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 1 of trigger 1108208
find_uvot_ag.pl vrs. 2020-10-30 fem started at 220527d22h37m40s995710usUT
Observation start time is 2022-05-27T22:33:40.0
Examining file 1108208_g542_uvot_catalog_srclist.fits
The exposure ID is 675383620
The exposure is 150.000 sec.
The bin size is 2 pixels
The filter is WHITE
There are 94 detected source(s) for 1108208_g542
Aspect correction adds 0.00221 degrees (0.530 sec of time = 7.65 arc sec) to RA
Aspect correction adds 0.00181 degrees ( 6.51 arcsec) to Dec
Total aspect correction is 10.04 arcsec
Star catalogs centered at 244.9830 , -15.6491 with radius 6.05 arc min.
n_usno: 755 n_gsc: 0
*** WARNING -- bright star catalog has 2 entries brighter than 12 mag
The brightest has mag 11.40336
RA DEC Mag Color
bright star 0: 244.95806 (16:19:49.93) -15.62373 (-15:37:25.4) 11.57 USNO-V
bright star 1: 245.04410 (16:20:10.58) -15.66173 (-15:39:42.2) 11.40 USNO-V
Mean distance difference (CAT_DELTA) for 74 matched entries is 0.802" for 1108208_g542
Mean and std. dev of mag. difference (MAG_DELTA) are 1.555 and 0.375 for 1108208_g542
Found 22 entries without IDs and 11 entries that are acceptable afterglow candidates for 1108208_g542.
Acceptable entries have no ID, XRT distances < 11.75", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
4 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=244.9830 (16:19:55.92) DEC=-15.6560 (-15:39:21.6)
XRT distances are from RA=244.9768 (16:19:54.43) DEC=-15.6424 (-15:38:32.6)
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1108208_g542 with 3x3 stamp
ra=244.97545 (16:19:54.11) dec=-15.64155 (-15:38:29.6) +/- 1.1" mag=19.62+/-0.35
dist=5.6 REFID=90
src: 0 distr. of nearby unmatched sources: 0 0 2 3 1
Found 4 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
244.9790 -15.6424 12.6 -1 USNO-B1 99.99 19.29 99.99
244.9795 -15.6403 14.9 -1 USNO-B1 12.67 12.81 12.75 *
244.9763 -15.6401 6.1 -1 USNO-B1 20.31 19.17 19.68
244.9720 -15.6384 16.5 -1 USNO-B1 20.65 19.70 20.12
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 1 in the list of sources is a candidate afterglow for 1108208_g542 with 3x3 stamp
ra=244.97877 (16:19:54.91) dec=-15.64080 (-15:38:26.9) +/- 1.1" mag=17.26+/-0.35
dist=8.9 REFID=57
src: 1 distr. of nearby unmatched sources: 2 2 3 3 0
Found 5 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
244.9790 -15.6424 5.7 -1 USNO-B1 99.99 19.29 99.99
244.9795 -15.6403 3.3 -1 USNO-B1 12.67 12.81 12.75 *
244.9826 -15.6395 13.9 -1 USNO-B1 20.05 19.37 19.67
244.9822 -15.6393 13.0 -1 USNO-B1 19.99 18.80 19.33
244.9763 -15.6401 8.9 -1 USNO-B1 20.31 19.17 19.68
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 2 in the list of sources is a candidate afterglow for 1108208_g542 with 3x3 stamp
ra=244.97984 (16:19:55.16) dec=-15.64143 (-15:38:29.2) +/- 1.1" mag=18.00+/-0.35
dist=11.1 REFID=69
src: 2 distr. of nearby unmatched sources: 4 0 4 2 0
Found 5 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
244.9790 -15.6424 4.4 -1 USNO-B1 99.99 19.29 99.99
244.9795 -15.6403 4.4 -1 USNO-B1 12.67 12.81 12.75 *
244.9826 -15.6395 11.7 -1 USNO-B1 20.05 19.37 19.67
244.9822 -15.6393 11.1 -1 USNO-B1 19.99 18.80 19.33
244.9763 -15.6401 13.1 -1 USNO-B1 20.31 19.17 19.68
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 3 in the list of sources is a candidate afterglow for 1108208_g542 with 5x5 stamp
ra=244.98030 (16:19:55.27) dec=-15.64046 (-15:38:25.7) +/- 1.1" mag=15.55+/-0.35
dist=14.0 REFID=3
*** The position of this source is inconsistent with the XRT position.
The position is 56.7 arc sec from the BAT position.
src: 3 distr. of nearby unmatched sources: 3 2 4 1 0
Found 5 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
244.9790 -15.6424 8.2 -1 USNO-B1 99.99 19.29 99.99
244.9795 -15.6403 2.8 -1 USNO-B1 12.67 12.81 12.75 *
244.9826 -15.6395 8.5 -1 USNO-B1 20.05 19.37 19.67
244.9822 -15.6393 7.7 -1 USNO-B1 19.99 18.80 19.33
244.9763 -15.6401 13.9 -1 USNO-B1 20.31 19.17 19.68
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 4 in the list of sources is a candidate afterglow for 1108208_g542 with 3x3 stamp
ra=244.98082 (16:19:55.40) dec=-15.64076 (-15:38:26.7) +/- 1.1" mag=19.87+/-0.35
dist=15.1 REFID=94
*** The position of this source is inconsistent with the XRT position.
The position is 55.4 arc sec from the BAT position.
src: 4 distr. of nearby unmatched sources: 3 2 4 1 0
Found 5 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
244.9790 -15.6424 8.6 -1 USNO-B1 99.99 19.29 99.99
244.9795 -15.6403 4.8 -1 USNO-B1 12.67 12.81 12.75 *
244.9826 -15.6395 7.5 -1 USNO-B1 20.05 19.37 19.67
244.9822 -15.6393 7.0 -1 USNO-B1 19.99 18.80 19.33
244.9763 -15.6401 15.8 -1 USNO-B1 20.31 19.17 19.68
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 5 in the list of sources is a candidate afterglow for 1108208_g542 with 3x3 stamp
ra=244.98013 (16:19:55.23) dec=-15.63762 (-15:38:15.4) +/- 1.1" mag=19.46+/-0.35
dist=20.7 REFID=85
*** The position of this source is inconsistent with the XRT position.
The position is 66.9 arc sec from the BAT position.
src: 5 distr. of nearby unmatched sources: 0 2 5 0 3
Found 5 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
244.9790 -15.6424 17.5 -1 USNO-B1 99.99 19.29 99.99
244.9795 -15.6403 9.7 -1 USNO-B1 12.67 12.81 12.75 *
244.9826 -15.6395 10.9 -1 USNO-B1 20.05 19.37 19.67
244.9822 -15.6393 9.4 -1 USNO-B1 19.99 18.80 19.33
244.9763 -15.6401 15.9 -1 USNO-B1 20.31 19.17 19.68
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 6 in the list of sources is a candidate afterglow for 1108208_g542 with 3x3 stamp
ra=244.98262 (16:19:55.83) dec=-15.64368 (-15:38:37.3) +/- 1.1" mag=19.38+/-0.35
dist=20.7 REFID=87
*** The position of this source is inconsistent with the XRT position.
The position is 44.4 arc sec from the BAT position.
src: 6 distr. of nearby unmatched sources: 0 1 4 2 2
Found 4 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
244.9790 -15.6424 13.4 -1 USNO-B1 99.99 19.29 99.99
244.9795 -15.6403 16.3 -1 USNO-B1 12.67 12.81 12.75 *
244.9826 -15.6395 15.0 -1 USNO-B1 20.05 19.37 19.67
244.9822 -15.6393 15.8 -1 USNO-B1 19.99 18.80 19.33
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 7 in the list of sources is a candidate afterglow for 1108208_g542 with 3x3 stamp
ra=244.98309 (16:19:55.94) dec=-15.64064 (-15:38:26.3) +/- 1.1" mag=19.42+/-0.35
dist=22.7 REFID=84
*** The position of this source is inconsistent with the XRT position.
The position is 55.3 arc sec from the BAT position.
src: 7 distr. of nearby unmatched sources: 0 3 6 0 0
Found 5 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
244.9790 -15.6424 15.5 -1 USNO-B1 99.99 19.29 99.99
244.9795 -15.6403 12.4 -1 USNO-B1 12.67 12.81 12.75 *
244.9826 -15.6395 4.4 -1 USNO-B1 20.05 19.37 19.67
244.9822 -15.6393 5.7 -1 USNO-B1 19.99 18.80 19.33
244.9879 -15.6378 19.5 -1 USNO-B1 20.73 19.78 20.20
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 8 in the list of sources is a candidate afterglow for 1108208_g542 with 3x3 stamp
ra=244.98354 (16:19:56.05) dec=-15.64218 (-15:38:31.8) +/- 1.1" mag=19.31+/-0.35
dist=23.4 REFID=83
*** The position of this source is inconsistent with the XRT position.
The position is 49.8 arc sec from the BAT position.
src: 8 distr. of nearby unmatched sources: 0 2 3 3 1
Found 4 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
244.9790 -15.6424 15.8 -1 USNO-B1 99.99 19.29 99.99
244.9795 -15.6403 15.5 -1 USNO-B1 12.67 12.81 12.75 *
244.9826 -15.6395 10.1 -1 USNO-B1 20.05 19.37 19.67
244.9822 -15.6393 11.3 -1 USNO-B1 19.99 18.80 19.33
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 9 in the list of sources is a candidate afterglow for 1108208_g542 with 3x3 stamp
ra=244.98159 (16:19:55.58) dec=-15.63721 (-15:38:14.0) +/- 1.1" mag=19.60+/-0.35
dist=25.0 REFID=77
*** The position of this source is inconsistent with the XRT position.
The position is 67.8 arc sec from the BAT position.
src: 9 distr. of nearby unmatched sources: 0 1 4 3 1
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
244.9795 -15.6403 13.1 -1 USNO-B1 12.67 12.81 12.75 *
244.9826 -15.6395 9.0 -1 USNO-B1 20.05 19.37 19.67
244.9822 -15.6393 7.8 -1 USNO-B1 19.99 18.80 19.33
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 21 in the list of sources is a candidate afterglow for 1108208_g542 with 3x3 stamp
ra=244.97224 (16:19:53.34) dec=-15.67341 (-15:40:24.3) +/- 1.1" mag=19.57+/-0.35
dist=112.7 REFID=88
*** The position of this source is inconsistent with the XRT position.
The position is 72.9 arc sec from the BAT position.
src: 21 srclist_match has ID
src: 21 distr. of nearby unmatched sources: 0 0 0 0 0
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
244.9718 -15.6732 1.7 -1 USNO-B1 17.67 16.44 16.98 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
Found 2 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
244.9790 -15.6424 7.6 -1 USNO-B1 99.99 19.29 99.99
244.9763 -15.6401 8.5 -1 USNO-B1 20.31 19.17 19.68
The closest star is 7.60" away.
List UVOT sources within 10" of the XRT position:
Unmatched source ra=244.97545 (16:19:54.11) dec=-15.64155 (-15:38:29.6) +/- 1.1" mag=19.62+/-0.35 dist=5.6 REFID=90
Unmatched source ra=244.97877 (16:19:54.91) dec=-15.64080 (-15:38:26.9) +/- 1.1" mag=17.26+/-0.35 dist=8.9 REFID=57
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 19.22, XRT distances < 11.75",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: /Home/eud/uvot_tdrss/swift/uvot_gcn/src_1108208_XRT.reg
# Region file format: DS9 version 3.0
# find_uvot_ag.pl vrs. 2020-10-30 fem XRT
global font="helvetica 12 bold" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source=1
fk5;circle(244.9768,-15.6424,4.7") # color=red dash=0
point(244.97901,-15.64059) # point=diamond 10 color=red width=2
srclist paragraph message for exposure 1 of trigger 1108208
------ Start for Possible Stand-alone Circular ----
In response to GRB220527 (Swift/BAT trigger 1108208) at 22:24:37 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of nominal 150.000 seconds with the White
filter starting 512 seconds after the BAT trigger. No credible afterglow
candidate has been found in the initial data products. Data from the 2.7'x2.7'
sub-image are not available at this time. 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 0.344.
------- notes for trigger 1108208 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 220527d22h37m42s838972usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1108208
-expid=675383620 -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/1108208/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
*** Warning -- no exposure found, using srclist assumed value.
XRT position found for srclist. BAT position found.
UVOT exposure began at MET 675383620.00344 or about 2022:147:22:33:35 UT
Found 751 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 14% of the srclist region. Found 94 sources in
srclist catalog. Found 22 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 srclist source(s) within 10.0" of the XRT position.
The brightest such source has ra= 244.9754 dec= -15.6416 mag=19.62 sep=5.59".
The closest srclist source has ra= 244.9754 dec= -15.6416 mag=19.62 sep=5.59".
Report rejected UVOT sources within 10 arcsec XRT position.
Such sources are usually NOT the afterglow.
****THIS SOURCE NEAR XRT POSITION WAS REJECTED--USE WITH CAUTION****
UVOT took a finding chart exposure of nominal 150.000 seconds with the White
filter starting 512 seconds after the BAT trigger. There is a candidate
afterglow in the list of sources generated on-board at
RA(J2000) = 16:19:54.11 = 244.97545
DEC(J2000) = -15:38:29.6 = -15.64155
with a 90%-confidence error radius of about 1.10 arc sec. This position is 5.59
arc sec. from the center of the XRT error circle. The estimated magnitude is
19.62 with a 1-sigma error of about 0.35. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.344.
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?
675383620 512 WHITE srclist found no candidates.
675383620 512 ? image data are not available.
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------
CATALOG_TYPE: SRCLIST
FILTER: white
GRB_DEC: -15.64240
GRB_ERROR: 11.75
GRB_RA: 244.97680
IMAGE_START_TIME: 22:33:35
MAGNITUDE: 18.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT