srclist overlap message for exposure 1 of trigger 1033144
uvot_overlap.pl vrs. 2010-12-20b fem started at 210217d08h23m24s367997usUT
The observation of trigger 1033144 started 2021-02-17T08:13:04.7
Examining file 1033144_g102_uvot_sky_srclist.fits
The exposure ID is 635242384
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (277.6527,-6.7334) with a roll angle of 99.8
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 (277.6460,-6.7350) 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 (277.6728,-6.7544) with a radius of 0.070 arc min
This is 1.733 arc min from the center of the uvot region
The area of the XRT error circle is 0.015 sq. arc min
The UVOT/XRT overlap is 0.015 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 1 of trigger 1033144
find_uvot_ag.pl vrs. 2020-10-30 fem started at 210217d08h23m26s071433usUT
Observation start time is 2021-02-17T08:13:04.7
Examining file 1033144_g102_uvot_catalog_srclist.fits
The exposure ID is 635242384
The exposure is 149.870 sec.
The bin size is 2 pixels
The filter is WHITE
There are 190 detected source(s) for 1033144_g102
*** WARNING -- the sources have filled the available telemetry buffer (190).
srclist_overlap returned: bat_overlap 1.000
srclist_overlap returned: xrt_overlap 1.000
Dimmest detected source in 1033144_g102 has mag 18.66
Aspect correction adds 0.00088 degrees (0.211 sec of time = 3.15 arc sec) to RA
Aspect correction adds 0.00060 degrees ( 2.15 arcsec) to Dec
Total aspect correction is 3.81 arcsec
Star catalogs centered at 277.6553 , -6.7336 with radius 6.00 arc min.
n_usno: 2858 n_gsc: 0
*** WARNING -- bright star catalog has 4 entries brighter than 12 mag
The brightest has mag 11.49886
RA DEC Mag Color
bright star 0: 277.64114 (18:30:33.87) -6.72263 (-06:43:21.5) 12.00 USNO-R
bright star 1: 277.64008 (18:30:33.62) -6.72227 (-06:43:20.2) 11.80 USNO-R
bright star 2: 277.62251 (18:30:29.40) -6.73027 (-06:43:49.0) 11.75 USNO-R
bright star 3: 277.63296 (18:30:31.91) -6.66255 (-06:39:45.2) 11.50 USNO-V
Mean distance difference (CAT_DELTA) for 189 matched entries is 0.840" for 1033144_g102
Mean and std. dev of mag. difference (MAG_DELTA) are 2.275 and 0.599 for 1033144_g102
Found 15 entries without IDs and 7 entries that are acceptable afterglow candidates for 1033144_g102.
Acceptable entries have no ID, XRT distances < 10.5", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
1 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=277.6460 (18:30:35.04) DEC=-6.7350 (-06:44:06.0)
XRT distances are from RA=277.6728 (18:30:41.46) DEC=-6.7544 (-06:45:15.8)
-----------------
Entry 32 in the list of sources is a candidate afterglow for 1033144_g102 with 3x3 stamp
ra=277.65614 (18:30:37.47) dec=-6.70771 (-06:42:27.8) +/- 1.1" mag=18.09+/-0.35
dist=178.2 REFID=69
*** The position of this source is inconsistent with the XRT position.
The position is 104.7 arc sec from the BAT position.
src: 32 srclist_match has ID
src: 32 distr. of nearby unmatched sources: 0 0 0 0 0
Found 11 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
277.6570 -6.7113 13.2 -1 USNO-B1 20.29 17.86 18.94
277.6528 -6.7113 17.7 -1 USNO-B1 99.99 17.83 99.99
277.6567 -6.7107 10.9 -1 USNO-B1 18.91 18.14 18.48
277.6510 -6.7083 18.5 -1 USNO-B1 15.73 13.58 14.54
277.6575 -6.7080 5.0 -1 USNO-B1 17.46 14.57 15.86
277.6580 -6.7078 6.6 -1 USNO-B1 16.45 14.07 15.13
277.6585 -6.7078 8.6 -1 USNO-B1 18.51 16.05 17.14
277.6565 -6.7074 1.6 -1 USNO-B1 17.07 15.08 15.96 *
277.6578 -6.7068 6.9 -1 USNO-B1 99.99 15.99 99.99
277.6535 -6.7049 13.9 -1 USNO-B1 15.88 14.04 14.85
277.6601 -6.7043 18.9 -1 USNO-B1 16.82 14.63 15.61
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 40 in the list of sources is a candidate afterglow for 1033144_g102 with 1x1 stamp
ra=277.61449 (18:30:27.48) dec=-6.72907 (-06:43:44.7) +/- 1.1" mag=17.49+/-0.35
dist=227.3 REFID=184
*** The position of this source is inconsistent with the XRT position.
The position is 114.6 arc sec from the BAT position.
src: 40 srclist_match has ID
src: 40 distr. of nearby unmatched sources: 1 0 0 0 0
Found 14 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
277.6181 -6.7260 16.9 -1 USNO-B1 17.21 14.92 15.94
277.6153 -6.7341 18.3 -1 USNO-B1 19.13 15.04 16.86
277.6149 -6.7326 12.9 -1 USNO-B1 18.95 14.78 16.63
277.6153 -6.7273 6.8 -1 USNO-B1 17.05 14.43 15.59
277.6156 -6.7251 14.8 -1 USNO-B1 19.21 14.48 16.58
277.6151 -6.7268 8.3 -1 USNO-B1 16.67 12.90 14.57 *
277.6148 -6.7275 5.7 -1 USNO-B1 18.72 13.21 15.66
277.6147 -6.7286 1.8 -1 USNO-B1 16.56 14.43 15.37 *
277.6143 -6.7327 13.2 -1 USNO-B1 17.98 15.19 16.43
277.6138 -6.7250 14.9 -1 USNO-B1 19.82 16.19 17.80
277.6131 -6.7252 14.7 -1 USNO-B1 17.68 15.85 16.66
277.6128 -6.7260 12.8 -1 USNO-B1 19.02 15.75 17.20
277.6107 -6.7309 15.1 -1 USNO-B1 19.97 18.61 19.21
277.6097 -6.7318 19.7 -1 USNO-B1 20.51 17.44 18.80
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 42 in the list of sources is a candidate afterglow for 1033144_g102 with 1x1 stamp
ra=277.61430 (18:30:27.43) dec=-6.72910 (-06:43:44.7) +/- 1.1" mag=18.03+/-0.35
dist=228.0 REFID=152
*** The position of this source is inconsistent with the XRT position.
The position is 115.3 arc sec from the BAT position.
src: 42 distr. of nearby unmatched sources: 0 0 0 0 0
Found 15 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
277.6181 -6.7260 17.5 -1 USNO-B1 17.21 14.92 15.94
277.6153 -6.7341 18.4 -1 USNO-B1 19.13 15.04 16.86
277.6149 -6.7326 12.9 -1 USNO-B1 18.95 14.78 16.63
277.6153 -6.7273 7.2 -1 USNO-B1 17.05 14.43 15.59
277.6156 -6.7251 15.1 -1 USNO-B1 19.21 14.48 16.58
277.6151 -6.7268 8.6 -1 USNO-B1 16.67 12.90 14.57 *
277.6148 -6.7275 6.0 -1 USNO-B1 18.72 13.21 15.66
277.6147 -6.7286 2.2 -1 USNO-B1 16.56 14.43 15.37 *
277.6143 -6.7327 13.1 -1 USNO-B1 17.98 15.19 16.43
277.6138 -6.7250 14.9 -1 USNO-B1 19.82 16.19 17.80
277.6131 -6.7252 14.6 -1 USNO-B1 17.68 15.85 16.66
277.6128 -6.7260 12.6 -1 USNO-B1 19.02 15.75 17.20
277.6107 -6.7309 14.5 -1 USNO-B1 19.97 18.61 19.21
277.6097 -6.7318 19.0 -1 USNO-B1 20.51 17.44 18.80
277.6091 -6.7272 19.8 -1 USNO-B1 20.05 17.12 18.42
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 46 in the list of sources is a candidate afterglow for 1033144_g102 with 3x3 stamp
ra=277.67380 (18:30:41.71) dec=-6.75306 (-06:45:11.0) +/- 1.1" mag=17.15+/-0.35
dist=6.1 REFID=34
src: 46 distr. of nearby unmatched sources: 1 0 0 0 0
Found 8 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
277.6710 -6.7502 14.5 -1 USNO-B1 17.08 14.48 15.64
277.6694 -6.7519 16.2 -1 USNO-B1 99.99 17.14 99.99
277.6696 -6.7529 15.0 -1 USNO-B1 18.20 15.30 16.59
277.6715 -6.7516 9.7 -1 USNO-B1 19.07 16.75 17.78
277.6734 -6.7536 2.4 -1 USNO-B1 15.05 13.09 13.96 *
277.6769 -6.7520 11.7 -1 USNO-B1 19.09 16.06 17.41
277.6734 -6.7575 15.9 -1 USNO-B1 16.32 14.69 15.41
277.6770 -6.7571 18.5 -1 USNO-B1 19.23 16.98 17.98
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 73 in the list of sources is a candidate afterglow for 1033144_g102 with 1x1 stamp
ra=277.60463 (18:30:25.11) dec=-6.72468 (-06:43:28.9) +/- 1.1" mag=18.66+/-0.35
dist=266.0 REFID=170
*** The position of this source is inconsistent with the XRT position.
The position is 152.5 arc sec from the BAT position.
src: 73 distr. of nearby unmatched sources: 0 0 0 0 0
Found 13 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
277.6091 -6.7272 18.4 -1 USNO-B1 20.05 17.12 18.42
277.6071 -6.7263 10.7 -1 USNO-B1 20.15 17.32 18.58
277.6065 -6.7252 6.8 -1 USNO-B1 18.70 17.90 18.26
277.6057 -6.7241 4.2 -1 USNO-B1 19.01 16.81 17.79
277.6061 -6.7219 11.3 -1 USNO-B1 20.36 18.12 19.11
277.6053 -6.7223 8.8 -1 USNO-B1 19.78 16.53 17.97
277.6048 -6.7241 2.4 -1 USNO-B1 17.02 14.25 15.48 *
277.6039 -6.7283 13.3 -1 USNO-B1 20.12 17.93 18.90
277.6015 -6.7286 18.1 -1 USNO-B1 18.92 15.55 17.05
277.6014 -6.7284 17.7 -1 USNO-B1 19.01 16.33 17.52
277.6010 -6.7279 17.4 -1 USNO-B1 19.11 16.17 17.48
277.6015 -6.7205 18.8 -1 USNO-B1 18.00 15.22 16.46
277.6011 -6.7210 18.4 -1 USNO-B1 18.77 16.06 17.26
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 77 in the list of sources is a candidate afterglow for 1033144_g102 with 3x3 stamp
ra=277.62911 (18:30:30.99) dec=-6.69415 (-06:41:38.9) +/- 1.1" mag=17.89+/-0.35
dist=267.2 REFID=67
*** The position of this source is inconsistent with the XRT position.
The position is 159.0 arc sec from the BAT position.
src: 77 distr. of nearby unmatched sources: 0 0 0 0 0
Found 6 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
277.6308 -6.6985 17.0 -1 USNO-B1 19.01 15.50 17.06
277.6267 -6.6986 18.3 -1 USNO-B1 19.40 17.99 18.62
277.6298 -6.6963 8.2 -1 USNO-B1 19.44 17.55 18.39
277.6279 -6.6942 4.2 -1 USNO-B1 15.68 13.77 14.62
277.6276 -6.6942 5.3 -1 USNO-B1 99.99 14.23 99.99
277.6303 -6.6921 8.4 -1 USNO-B1 99.99 18.10 99.99
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 99 in the list of sources is a candidate afterglow for 1033144_g102 with 3x3 stamp
ra=277.68950 (18:30:45.48) dec=-6.76003 (-06:45:36.1) +/- 1.1" mag=16.14+/-0.35
dist=63.2 REFID=15
*** The position of this source is inconsistent with the XRT position.
The position is 179.7 arc sec from the BAT position.
src: 99 distr. of nearby unmatched sources: 1 0 0 0 0
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
277.6867 -6.7608 10.4 -1 USNO-B1 16.54 15.04 15.70
277.6899 -6.7596 2.0 -1 USNO-B1 14.68 12.89 13.68 *
277.6903 -6.7592 4.3 -1 USNO-B1 17.41 12.96 14.94 *
277.6880 -6.7645 17.0 -1 USNO-B1 99.99 18.20 99.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 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
277.6734 -6.7536 3.7 -1 USNO-B1 15.05 13.09 13.96
The closest star is 3.71" away.
List UVOT sources within 10" of the XRT position:
Unmatched source ra=277.67380 (18:30:41.71) dec=-6.75306 (-06:45:11.0) +/- 1.1" mag=17.15+/-0.35 dist=6.1 REFID=34
There are 1 candidate(s) outside XRT error circle with mag < 18.66
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 19.22, XRT distances < 10.5",
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_1033144_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(277.67275,-6.75439,4.20") # color=red dash=0
point(277.67363,-6.75379) # point=diamond 10 color=red width=2
srclist paragraph message for exposure 1 of trigger 1033144
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: no image afterglow info
SRCLIST PROBLEM: high density of stars, srclist filled telemetry buffer
See notes for more details.
WARNING -- because of the LARGE EXTINCTION, results should be used cautiously.
------ Start for Possible Stand-alone Circular ----
In response to GRB210217 (Swift/BAT trigger 1033144) at 08:11:21 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 76 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. Because of the density of
catalogued stars, further analysis is required to report an upper limit for any
afterglow in the region. No correction has been made for the large, but
uncertain, extinction expected.
------- notes for trigger 1033144 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 210217d08h23m34s069746usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1033144
-expid=635242384 -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/1033144/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
Unreliable extinction found for bat position. Unreliable extinction found for
xrt position. XRT position found for srclist. BAT position found.
UVOT exposure began at MET 635242384.65552 or about 2021:048:08:12:59 UT
Found 2854 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 55% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 15 srclist
source(s) without IDs. There are 0 good candidate(s) in the srclist catalog.
Good candidates must be brighter than 19.22 mag.
The number of srclist sources filled the available telemetry. The weakest
source detected was 18.66 mag.
Found 1 srclist source(s) within 10.0" of the XRT position.
The brightest such source has ra= 277.6738 dec= -6.7531 mag=17.15 sep=6.09".
The closest srclist source has ra= 277.6738 dec= -6.7531 mag=17.15 sep=6.09".
This paragraph is only useful if the XRT position is grossly wrong. There are 1
candidate(s) in the srclist data with mag < 18.66 inside the BAT error region,
but outside the XRT error region. The brightest such source is at RA=277.62911
(18:30:30.99), DEC=-6.69415 (-06:41:38.9) (J2000). It has a mag of 17.89. It is
159.0" from the BAT position.
****THIS SOURCE IS OUTSIDE XRT ERROR CIRCLE--USE WITH CAUTION***
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 76 seconds after the BAT trigger. There is a candidate afterglow in
the list of sources generated on-board at
RA(J2000) = 18:30:30.99 = 277.62911
DEC(J2000) = -06:41:38.9 = -6.69415
with a 90%-confidence error radius of about 1.10 arc sec. The estimated
magnitude is 17.89 with a 1-sigma error of about 0.35. No correction has been
made for the large, but uncertain, extinction expected.
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 150 seconds with the White filter
starting 76 seconds after the BAT trigger. There is a candidate afterglow in
the list of sources generated on-board at
RA(J2000) = 18:30:41.71 = 277.67380
DEC(J2000) = -06:45:11.0 = -6.75306
with a 90%-confidence error radius of about 1.10 arc sec. This position is 6.09
arc sec. from the center of the XRT error circle. The estimated magnitude is
17.15 with a 1-sigma error of about 0.35. No correction has been made for the
large, but uncertain, extinction expected.
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?
635242384 76 WHITE srclist found no candidates.
635242384 76 ? image data are not available.
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------