srclist overlap message for exposure 2 of trigger 1099310
uvot_overlap.pl vrs. 2010-12-20b fem started at 220325d20h48m29s569715usUT
The observation of trigger 1099310 started 2022-03-25T17:22:18.4
Examining file ./1099310_g354_uvot_sky_srclist.fits
The exposure ID is 669921738
The exposure time is undefined.
The filter is U.
The uvot region is centered at (269.4909,-7.0284) with a roll angle of 88.6
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 (269.4850,-7.0310) with a radius of 3.000 arc min
This is 0.387 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 (269.4875,-7.0359) with a radius of 0.040 arc min
This is 0.495 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 1099310
find_uvot_ag.pl vrs. 2020-10-30 fem started at 220325d20h48m47s923474usUT
Observation start time is 2022-03-25T17:22:18.4
Examining file ./1099310_g354_uvot_catalog_srclist.fits
The exposure ID is 669921738
The exposure is 249.935 sec.
The bin size is 2 pixels
The filter is U
There are 43 detected source(s) for 1099310_g354
Aspect correction adds 0.00153 degrees (0.366 sec of time = 5.45 arc sec) to RA
Aspect correction adds 0.00110 degrees ( 3.95 arcsec) to Dec
Total aspect correction is 6.73 arcsec
Star catalogs centered at 269.5006 , -7.0204 with radius 8.28 arc min.
n_usno: 3440 n_gsc: 0
*** WARNING -- bright star catalog has 3 entries brighter than 12 mag
The brightest has mag 10.95
RA DEC Mag Color
bright star 0: 269.40742 (17:57:37.78) -7.10081 (-07:06:02.9) 11.49 USNO-V
bright star 1: 269.55602 (17:58:13.44) -7.14034 (-07:08:25.2) 10.95 USNO-R
bright star 2: 269.36687 (17:57:28.05) -7.01940 (-07:01:09.9) 11.20 USNO-V
Mean distance difference (CAT_DELTA) for 31 matched entries is 1.016" for 1099310_g354
Mean and std. dev of mag. difference (MAG_DELTA) are 3.175 and 0.981 for 1099310_g354
Found 12 entries without IDs and 3 entries that are acceptable afterglow candidates for 1099310_g354.
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.
2 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=269.4850 (17:57:56.40) DEC=-7.0310 (-07:01:51.6)
XRT distances are from RA=269.4875 (17:57:57.01) DEC=-7.0359 (-07:02:09.3)
*** WARNING 27 per cent of entries have no IDs.
-----------------
Entry 3 in the list of sources is a candidate afterglow for 1099310_g354 with 5x5 stamp
ra=269.48234 (17:57:55.76) dec=-7.06927 (-07:04:09.4) +/- 1.1" mag=19.24+/-0.35
dist=121.5 REFID=34
*** The position of this source is inconsistent with the XRT position.
The position is 138.1 arc sec from the BAT position.
src: 3 distr. of nearby unmatched sources: 0 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
269.4801 -7.0643 19.6 -1 USNO-B1 20.97 18.69 19.70
269.4860 -7.0666 16.3 -1 USNO-B1 19.18 16.15 17.50
269.4827 -7.0687 2.4 -1 USNO-B1 16.55 14.52 15.42 *
269.4826 -7.0699 2.3 -1 USNO-B1 18.73 16.98 17.76 *
269.4848 -7.0726 14.9 -1 USNO-B1 20.64 19.00 19.73
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 1099310_g354 with 5x5 stamp
ra=269.52640 (17:58:06.34) dec=-7.04891 (-07:02:56.1) +/- 1.1" mag=19.18+/-0.35
dist=146.5 REFID=32
*** The position of this source is inconsistent with the XRT position.
The position is 161.4 arc sec from the BAT position.
src: 5 distr. of nearby unmatched sources: 0 0 0 0 0
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
269.5234 -7.0456 16.0 -1 USNO-B1 20.01 18.86 19.37
269.5251 -7.0476 6.4 -1 USNO-B1 20.68 18.43 19.43
269.5272 -7.0476 5.5 -1 USNO-B1 14.23 12.71 13.39 *
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 1099310_g354 with 5x5 stamp
ra=269.53822 (17:58:09.17) dec=-7.03837 (-07:02:18.1) +/- 1.1" mag=19.39+/-0.35
dist=181.3 REFID=40
*** The position of this source is inconsistent with the XRT position.
The position is 192.0 arc sec from the BAT position.
src: 7 distr. of nearby unmatched sources: 0 0 0 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
269.5354 -7.0373 10.6 -1 USNO-B1 19.90 18.78 19.28
269.5369 -7.0343 15.4 -1 USNO-B1 20.57 18.84 19.61
269.5379 -7.0361 8.1 -1 USNO-B1 20.61 18.26 19.30
269.5355 -7.0410 13.6 -1 USNO-B1 19.04 17.24 18.04
269.5432 -7.0380 17.9 -1 USNO-B1 19.00 17.63 18.24
*** If XRT position is correct, then this is NOT the afterglow
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
269.4881 -7.0334 9.4 -1 USNO-B1 18.56 16.26 17.28
269.4856 -7.0354 7.1 -1 USNO-B1 20.69 18.59 19.52
The closest star is 7.10" away.
List UVOT sources within 10" of the XRT position:
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 18.12, 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 1099310
------ Start for Possible Stand-alone Circular ----
In response to GRB220325 (Swift/BAT trigger 1099310) at 17:16:23 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
326 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 100% of the
XRT error circle. The typical 3-sigma upper limit has been about 19.2 mag. 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 18.0 mag. No
correction has been made for the expected extinction corresponding to E(B-V) of
0.915.
------- notes for trigger 1099310 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 220325d20h48m52s949293usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1099310
-expid=669921738 -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/1099310/
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 669921738.4079 or about 2022:084:17:22:13 UT
Found 3436 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 34% of the srclist region. Found 43 sources in
srclist catalog. Found 12 srclist source(s) without IDs. There are 0 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
18.12 mag.
Found 4 source(s) in Genie image catalog. Found 0 Genie image source(s) without
IDs. There are 0 good candidate(s) in the Genie image catalog. Good candidates
must be brighter than 20.16 mag. Found 238 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 30% of the
Genie image region.
Genie image analysis:
Found 30168.3 counts in the large background region of 6162.0 pixels or a rate
of 4.896 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 19.44 mag. for a
4-arcsec aperture.
Found 982.4 counts in the XRT position region of 201.0 pixels or a rate of
4.888 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 0.057 +/- 0.135 (1-sigma) cps or
21.28 mag and a range from 19.97 to 99.99 mag. The 3-sigma UL at the XRT
position is 0.462 cps or 19.01 mag. The closest srclist source has ra= 269.4783
dec= -7.0244 mag=18.03 sep=53.20". The closest Genie source has ra= 269.4784
dec= -7.0240 mag=16.87 sep=53.90".
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?
669921738 326 U srclist found no candidates.
669921738 326 U image found no candidates.
List afterglow candidates for other finding charts.
669921526 114 WHITE srclist found no candidates.
669921526 114 WHITE image found no candidates.
669922269 857 WHITE srclist found no candidates.
669922269 857 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: u
GRB_DEC: -7.03592
GRB_ERROR: 6
GRB_RA: 269.48754
IMAGE_START_TIME: 17:22:13
MAGNITUDE: 19.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT