srclist overlap message for exposure 1 of trigger 1016881
uvot_overlap.pl vrs. 2010-12-20b fem started at 210112d04h18m59s597973usUT
The observation of trigger 1016881 started 2021-01-12T01:38:53.0
Examining file ./1016881_g109_uvot_sky_srclist.fits
The exposure ID is 632108333
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (219.0046,33.0648) with a roll angle of 116.2
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 (218.9990,33.0700) with a radius of 3.000 arc min
This is 0.421 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 (219.0060,33.0542) with a radius of 0.028 arc min
This is 0.640 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
srclist afterglow message for exposure 1 of trigger 1016881
find_uvot_ag.pl vrs. 2020-10-30 fem started at 210112d04h19m02s763417usUT
Observation start time is 2021-01-12T01:38:53.0
Examining file ./1016881_g109_uvot_catalog_srclist.fits
The exposure ID is 632108333
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 24 detected source(s) for 1016881_g109
Aspect correction adds 0.00112 degrees (0.268 sec of time = 3.37 arc sec) to RA
Aspect correction adds 0.00003 degrees ( 0.09 arcsec) to Dec
Total aspect correction is 3.38 arcsec
Star catalogs centered at 219.0096 , 33.0746 with radius 5.34 arc min.
n_usno: 309 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 21 matched entries is 0.525" for 1016881_g109
Mean and std. dev of mag. difference (MAG_DELTA) are 1.291 and 0.983 for 1016881_g109
Found 4 entries without IDs and 3 entries that are acceptable afterglow candidates for 1016881_g109.
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=218.9990 (14:35:59.76) DEC=33.0700 (+33:04:12.0)
XRT distances are from RA=219.0060 (14:36:01.45) DEC=33.0542 (+33:03:15.0)
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1016881_g109 with 5x5 stamp
ra=219.00638 (14:36:01.53) dec=33.05416 (+33:03:15.0) +/- 1.1" mag=19.77+/-0.35
dist=1.0 REFID=18
src: 0 distr. of nearby unmatched sources: 0 0 0 0 0
Found 0 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)
##### This source remains a candidate #####
It has no entries within 4" or brighter than 13 mag
-----------------
Entry 8 in the list of sources is a candidate afterglow for 1016881_g109 with 5x5 stamp
ra=219.03774 (14:36:09.06) dec=33.08555 (+33:05:08.0) +/- 1.1" mag=20.93+/-0.35
dist=148.0 REFID=24
*** The position of this source is inconsistent with the XRT position.
The position is 129.6 arc sec from the BAT position.
src: 8 distr. of nearby unmatched sources: 0 0 0 0 0
Found 2 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
219.0348 33.0858 8.8 -1 USNO-B1 21.42 20.17 20.73
219.0344 33.0873 11.9 -1 USNO-B1 20.57 19.64 20.06
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 16 in the list of sources is a candidate afterglow for 1016881_g109 with 5x5 stamp
ra=218.93542 (14:35:44.50) dec=33.06906 (+33:04:08.6) +/- 1.1" mag=20.50+/-0.35
dist=219.7 REFID=23
*** The position of this source is inconsistent with the XRT position.
The position is 191.9 arc sec from the BAT position.
src: 16 distr. of nearby unmatched sources: 0 0 0 0 0
Found 0 entries in star catalog(s) within 20.0" of the candidate.
*** If XRT position is correct, then this is NOT the afterglow
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=219.00638 (14:36:01.53) dec=33.05416 (+33:03:15.0) +/- 1.1" mag=19.77+/-0.35 dist=1.0 REFID=18
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 19.22, XRT distances < 5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
srclist paragraph message for exposure 1 of trigger 1016881
------ Start for Possible Stand-alone Circular ----
In response to GRB210112 (Swift/BAT trigger 1016881) at 01:37:03 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 82 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 14:36:01.45 = 219.00606
DEC(J2000) = +33:03:15.4 = 33.05428
with a 90%-confidence error radius of about 0.66 arc sec. This position is 0.4
arc sec. from the center of the XRT error circle. The estimated magnitude is
19.52 with a 1-sigma error of about 0.16. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.014.
------- notes for trigger 1016881 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 210112d04h19m05s720507usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1016881
-expid=632108333 -meonly -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/1016881/
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 632108333.03072 or about 2021:012:01:38:48 UT
Found 305 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 7% of the srclist region. Found 24 sources in
srclist catalog. Found 4 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 5 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
20.81 mag. Found 92 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 8% of the Genie image region.
Found 1 srclist source(s) within 10.0" of the XRT position.
The brightest such source has ra= 219.0064 dec= 33.0542 mag=19.77 sep=1.03".
The closest srclist source has ra= 219.0064 dec= 33.0542 mag=19.77 sep=1.03".
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?
632108333 82 WHITE 219.00638 33.05416 19.77/19.2 1.0 srclist Yes
632108333 82 WHITE 219.00606 33.05428 19.52/20.8 0.4 image Yes
List afterglow candidates for other finding charts.
632108545 294 U srclist found no candidates.
632108545 294 U image found no candidates.
632109122 871 WHITE srclist found no candidates.
632109122 871 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 33.05428
GRB_ERROR: 0.66
GRB_RA: 219.00606
IMAGE_START_TIME: 01:38:48
MAGNITUDE: 19.52
MAG_ERROR: 0.16
MESSAGE_TYPE: ACK
SOURCE: XRT