srclist overlap message for exposure 2 of trigger 1032024
uvot_overlap.pl vrs. 2010-12-20b fem started at 210211d13h49m57s657677usUT
The observation of trigger 1032024 started 2021-02-11T08:48:34.4
Examining file ./1032024_g315_uvot_sky_srclist.fits
The exposure ID is 634726114
The exposure time is undefined.
The filter is U.
The uvot region is centered at (269.4396,-46.2976) with a roll angle of 74.1
It is square with sides of 12.05 arc min. for an area of 145.15 sq arc min
The BAT error circle is centered at (269.4330,-46.2990) with a radius of 3.000 arc min
This is 0.284 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 (269.4398,-46.2673) with a radius of 0.040 arc min
This is 1.818 arc min from the center of the uvot region
The area of the XRT error circle is 0.005 sq. arc min
The UVOT/XRT overlap is 0.005 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 2 of trigger 1032024
find_uvot_ag.pl vrs. 2020-10-30 fem started at 210211d13h50m15s482813usUT
Observation start time is 2021-02-11T08:48:34.4
Examining file ./1032024_g315_uvot_catalog_srclist.fits
The exposure ID is 634726114
The exposure is 198.864 sec.
The bin size is 2 pixels
The filter is U
There are 190 detected source(s) for 1032024_g315
*** 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 1032024_g315 has mag 17.70
Aspect correction adds -0.00064 degrees (-0.154 sec of time = -1.59 arc sec) to RA
Aspect correction adds 0.00122 degrees ( 4.37 arcsec) to Dec
Total aspect correction is 4.65 arcsec
Star catalogs centered at 269.4297 , -46.2935 with radius 9.07 arc min.
n_usno: 5005 n_gsc: 0
*** WARNING -- bright star catalog has 23 entries brighter than 12 mag
The brightest has mag 9.27168
RA DEC Mag Color
bright star 0: 269.48034 (17:57:55.28) -46.29205 (-46:17:31.4) 10.59 USNO-V
bright star 1: 269.46680 (17:57:52.03) -46.32976 (-46:19:47.1) 11.18 USNO-R
bright star 2: 269.37185 (17:57:29.24) -46.32872 (-46:19:43.4) 9.27 USNO-V
bright star 3: 269.46821 (17:57:52.37) -46.24489 (-46:14:41.6) 11.41 USNO-V
bright star 4: 269.42023 (17:57:40.85) -46.23838 (-46:14:18.2) 11.20 USNO-R
bright star 5: 269.39229 (17:57:34.15) -46.23813 (-46:14:17.3) 10.65 USNO-R
bright star 6: 269.35667 (17:57:25.60) -46.24452 (-46:14:40.3) 11.89 USNO-V
bright star 7: 269.54013 (17:58:09.63) -46.28061 (-46:16:50.2) 9.99 USNO-V
bright star 8: 269.39250 (17:57:34.20) -46.21328 (-46:12:47.8) 9.91 USNO-V
bright star 9: 269.55013 (17:58:12.03) -46.31126 (-46:18:40.5) 11.30 USNO-V
bright star 10: 269.37930 (17:57:31.03) -46.20728 (-46:12:26.2) 9.99 USNO-R
bright star 11: 269.47532 (17:57:54.08) -46.39003 (-46:23:24.1) 10.63 USNO-V
bright star 12: 269.38302 (17:57:31.92) -46.39719 (-46:23:49.9) 9.56 USNO-V
bright star 13: 269.56837 (17:58:16.41) -46.23764 (-46:14:15.5) 11.06 USNO-V
bright star 14: 269.47561 (17:57:54.15) -46.18713 (-46:11:13.7) 11.14 USNO-V
bright star 15: 269.27162 (17:57:05.19) -46.32020 (-46:19:12.7) 11.13 USNO-V
bright star 16: 269.52900 (17:58:06.96) -46.19889 (-46:11:56.0) 9.92 USNO-V
bright star 17: 269.53139 (17:58:07.53) -46.19100 (-46:11:27.6) 11.86 USNO-V
bright star 18: 269.56009 (17:58:14.42) -46.38048 (-46:22:49.7) 11.97 USNO-V
bright star 19: 269.24293 (17:56:58.30) -46.31656 (-46:18:59.6) 11.99 USNO-V
bright star 20: 269.60945 (17:58:26.27) -46.33872 (-46:20:19.4) 11.91 USNO-V
bright star 21: 269.41350 (17:57:39.24) -46.42531 (-46:25:31.1) 10.87 USNO-R
bright star 22: 269.53776 (17:58:09.06) -46.40302 (-46:24:10.9) 11.61 USNO-V
Mean distance difference (CAT_DELTA) for 156 matched entries is 0.915" for 1032024_g315
Mean and std. dev of mag. difference (MAG_DELTA) are 2.267 and 0.779 for 1032024_g315
Found 36 entries without IDs and 4 entries that are acceptable afterglow candidates for 1032024_g315.
Acceptable entries have no ID, XRT distances < 6", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
17 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=269.4330 (17:57:43.92) DEC=-46.2990 (-46:17:56.4)
XRT distances are from RA=269.4398 (17:57:45.54) DEC=-46.2673 (-46:16:02.3)
-----------------
Entry 6 in the list of sources is a candidate afterglow for 1032024_g315 with 3x3 stamp
ra=269.42705 (17:57:42.49) dec=-46.32042 (-46:19:13.5) +/- 1.1" mag=16.04+/-0.35
dist=193.8 REFID=38
*** The position of this source is inconsistent with the XRT position.
The position is 78.5 arc sec from the BAT position.
src: 6 srclist_match has ID
src: 6 distr. of nearby unmatched sources: 1 0 0 0 0
Found 5 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
269.4274 -46.3152 18.9 -1 USNO-B1 19.68 18.21 18.86
269.4258 -46.3205 3.0 -1 USNO-B1 19.13 16.41 17.62 *
269.4274 -46.3207 1.4 -1 USNO-B1 14.47 12.82 13.55 *
269.4295 -46.3219 8.0 -1 USNO-B1 16.58 15.15 15.78
269.4267 -46.3246 14.9 -1 USNO-B1 15.21 13.51 14.26
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 22 in the list of sources is a candidate afterglow for 1032024_g315 with 3x3 stamp
ra=269.45457 (17:57:49.10) dec=-46.26025 (-46:15:36.9) +/- 1.1" mag=15.60+/-0.35
dist=44.8 REFID=20
*** The position of this source is inconsistent with the XRT position.
The position is 149.5 arc sec from the BAT position.
src: 22 distr. of nearby unmatched sources: 0 0 0 0 0
Found 10 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
269.4518 -46.2648 17.6 -1 USNO-B1 16.15 15.02 15.52
269.4544 -46.2627 8.9 -1 USNO-B1 17.97 18.61 18.33
269.4492 -46.2597 13.5 -1 USNO-B1 18.98 16.45 17.57
269.4599 -46.2623 15.2 -1 USNO-B1 17.25 17.29 17.27
269.4545 -46.2597 2.0 -1 USNO-B1 14.77 13.62 14.13 *
269.4597 -46.2613 13.3 -1 USNO-B1 19.19 16.54 17.72
269.4601 -46.2605 13.7 -1 USNO-B1 16.99 16.54 16.74
269.4488 -46.2566 19.5 -1 USNO-B1 17.55 16.67 17.06
269.4592 -46.2586 13.0 -1 USNO-B1 17.29 20.41 19.02
269.4567 -46.2552 19.0 -1 USNO-B1 17.85 19.16 18.58
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 26 in the list of sources is a candidate afterglow for 1032024_g315 with 1x1 stamp
ra=269.49465 (17:57:58.72) dec=-46.28617 (-46:17:10.2) +/- 1.1" mag=17.54+/-0.35
dist=152.5 REFID=155
*** The position of this source is inconsistent with the XRT position.
The position is 160.2 arc sec from the BAT position.
src: 26 srclist_match has ID
src: 26 distr. of nearby unmatched sources: 0 0 0 0 0
Found 11 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
269.4910 -46.2852 9.7 -1 USNO-B1 19.49 18.59 18.99
269.4904 -46.2824 17.3 -1 USNO-B1 16.91 16.51 16.69
269.4923 -46.2821 15.8 -1 USNO-B1 17.72 17.66 17.69
269.4938 -46.2866 2.7 -1 USNO-B1 15.53 14.25 14.82 *
269.4927 -46.2828 13.1 -1 USNO-B1 19.03 20.41 19.80
269.4945 -46.2891 10.4 -1 USNO-B1 16.45 15.18 15.75
269.4941 -46.2864 1.5 -1 USNO-B1 99.99 14.68 99.99 *
269.4961 -46.2889 10.7 -1 USNO-B1 17.41 16.89 17.12
269.4962 -46.2822 14.6 -1 USNO-B1 17.45 18.10 17.81
269.4998 -46.2899 18.7 -1 USNO-B1 99.99 15.68 99.99
269.5015 -46.2850 17.6 -1 USNO-B1 17.76 17.73 17.74
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 41 in the list of sources is a candidate afterglow for 1032024_g315 with 3x3 stamp
ra=269.48804 (17:57:57.13) dec=-46.26126 (-46:15:40.5) +/- 1.1" mag=16.44+/-0.35
dist=122.1 REFID=67
*** The position of this source is inconsistent with the XRT position.
The position is 192.9 arc sec from the BAT position.
src: 41 srclist_match has ID
src: 41 distr. of nearby unmatched sources: 0 0 0 0 0
Found 10 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
269.4828 -46.2646 17.7 -1 USNO-B1 20.33 19.41 19.82
269.4817 -46.2615 15.9 -1 USNO-B1 20.05 19.09 19.52
269.4868 -46.2642 10.9 -1 USNO-B1 99.99 18.54 99.99
269.4901 -46.2664 19.4 -1 USNO-B1 99.99 16.37 99.99
269.4902 -46.2662 18.6 -1 USNO-B1 17.02 16.53 16.75
269.4884 -46.2609 1.5 -1 USNO-B1 14.33 13.15 13.68 *
269.4905 -46.2605 6.8 -1 USNO-B1 17.64 99.99 99.99
269.4909 -46.2601 8.4 -1 USNO-B1 19.50 17.81 18.56
269.4948 -46.2594 18.1 -1 USNO-B1 18.18 20.02 19.20
269.4914 -46.2563 19.6 -1 USNO-B1 16.56 16.18 16.35
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
269.4410 -46.2663 4.8 -1 USNO-B1 19.94 20.30 20.14
269.4375 -46.2657 8.2 -1 USNO-B1 19.23 16.55 17.74
The closest star is 4.84" away.
List UVOT sources within 10" of the XRT position:
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 17.99, XRT distances < 6",
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 2 of trigger 1032024
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: no overlap
SRCLIST PROBLEM: high density of stars, srclist filled telemetry buffer
See notes for more details.
------ Start for Possible Stand-alone Circular ----
In response to GRB210211 (Swift/BAT trigger 1032024) at 08:43:18 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 199 seconds with the U filter starting
289 seconds after the BAT trigger. No credible afterglow candidate has been
found in the initial data products. The 2.7'x2.7' sub-image covers none of the
XRT error circle. 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 expected extinction
corresponding to E(B-V) of 0.127.
------- notes for trigger 1032024 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 210211d13h50m22s455374usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1032024
-expid=634726114 -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/1032024/
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 634726114.4071 or about 2021:042:08:48:29 UT
Found 5000 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 42% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 36 srclist
source(s) without IDs. There are 0 good candidate(s) in the srclist catalog.
Good candidates must be brighter than 17.99 mag.
Found 37 source(s) in Genie image catalog. Found 3 Genie image source(s)
without IDs. There are 0 good candidate(s) in the Genie image catalog. Good
candidates must be brighter than 19.31 mag. Found 535 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
53% of the Genie image region.
Genie image analysis:
Found 77576.8 counts in the large background region of 5258.0 pixels or a rate
of 14.754 counts/pixel in a radius of 45.0 arcsec. Based on this background,
the typical 5-sigma UL at a random point in the Genie image is 18.61 mag. for a
4-arcsec aperture. The number of srclist sources filled the available
telemetry. The weakest source detected was 17.70 mag. The closest srclist
source has ra= 269.4546 dec= -46.2602 mag=15.60 sep=44.79". The closest Genie
source has ra= 269.4341 dec= -46.2779 mag=16.64 sep=40.76".
This paragraph is only useful if the XRT position is grossly wrong. There are 1
candidate(s) in the image data with mag < 18.75 inside the BAT error region,
but outside the XRT error region. The brightest such source is at RA=269.44845
(17:57:47.63), DEC=-46.30307 (-46:18:11.1) (J2000). It has a mag of 17.26. It
is 41.1" from the BAT position.
****THIS SOURCE IS OUTSIDE XRT ERROR CIRCLE--USE WITH CAUTION***
UVOT took a finding chart exposure of 199 seconds with the U filter starting
289 seconds after the BAT trigger. There is a candidate afterglow in the
rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 17:57:47.63 = 269.44845
DEC(J2000) = -46:18:11.1 = -46.30307
with a 90%-confidence error radius of about 0.64 arc sec. The estimated
magnitude is 17.26 with a 1-sigma error of about 0.15. No correction has been
made for the expected extinction corresponding to E(B-V) of 0.127.
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?
634726114 289 U srclist found no candidates.
634726114 289 U image found no candidates.
List afterglow candidates for other finding charts.
634725902 77 WHITE srclist found no candidates.
634725902 77 WHITE image found no candidates.
------- Tokens for Quick GCN -------