srclist overlap message for exposure 3 of trigger 1223470
uvot_overlap.pl vrs. 2010-12-20b fem started at 240421d18h35m38s696977usUT
The observation of trigger 1223470 started 2024-04-21T09:57:59.6
Examining file ./1223470_g904_uvot_sky_srclist.fits
The exposure ID is 735386279
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (299.6936,-14.8775) with a roll angle of 78.3
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 (299.6860,-14.8790) with a radius of 3.000 arc min
This is 0.450 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 (299.7008,-14.8596) with a radius of 0.035 arc min
This is 1.153 arc min from the center of the uvot region
The area of the XRT error circle is 0.004 sq. arc min
The UVOT/XRT overlap is 0.004 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 3 of trigger 1223470
find_uvot_ag.pl vrs. 2023-04-25a fem started at 240421d18h36m05s086548usUT
Observation start time is 2024-04-21T09:57:59.6
Examining file ./1223470_g904_uvot_catalog_srclist.fits
The exposure ID is 735386279
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 190 detected source(s) for 1223470_g904
*** 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 1223470_g904 has mag 19.15
Aspect correction adds 0.00226 degrees (0.542 sec of time = 7.86 arc sec) to RA
Aspect correction adds 0.00008 degrees ( 0.30 arcsec) to Dec
Total aspect correction is 7.87 arcsec
Star catalogs centered at 299.6957 , -14.8798 with radius 8.68 arc min.
n_usno: 1703 n_gsc: 2171
*** WARNING -- bright star catalog has 8 entries brighter than 12 mag
The brightest has mag 9.7547
RA DEC Mag Color
bright star 0: 299.66551 (19:58:39.72) -14.90965 (-14:54:34.8) 10.66 USNO-V
bright star 1: 299.79279 (19:59:10.27) -14.84463 (-14:50:40.7) 11.39 GSC-F
bright star 2: 299.58531 (19:58:20.47) -14.90046 (-14:54:01.7) 11.45 USNO-V
bright star 3: 299.83728 (19:59:20.95) -14.90378 (-14:54:13.6) 11.35 GSC-F
bright star 4: 299.77576 (19:59:06.18) -14.99829 (-14:59:53.9) 9.75 USNO-V
bright star 5: 299.75168 (19:59:00.40) -14.88099 (-14:52:51.6) 11.21 GSC-F
bright star 6: 299.67758 (19:58:42.62) -14.80654 (-14:48:23.5) 11.97 GSC-F
bright star 7: 299.72742 (19:58:54.58) -14.79940 (-14:47:57.9) 11.57 GSC-F
Mean distance difference (CAT_DELTA) for 185 matched entries is 0.720" for 1223470_g904
Mean and std. dev of mag. difference (MAG_DELTA) are 1.793 and 0.568 for 1223470_g904
Found 8 entries without IDs and 0 entries that are acceptable afterglow candidates for 1223470_g904.
Acceptable entries have no ID, XRT distances < 5.25", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
7 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=299.6860 (19:58:44.64) DEC=-14.8790 (-14:52:44.4)
XRT distances are from RA=299.7008 (19:58:48.20) DEC=-14.8596 (-14:51:34.6)
Found NO acceptable entries.
Unidentified entry closest to XRT position is no. 23:
ra=299.66942 dec=-14.91083 +/- 1.1" mag=19.09+/-0.35 dist=214.3 REFID=183
Found 0 entries in star catalog(s) within 10" of the XRT position.
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 19.22, XRT distances < 5.25",
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 3 of trigger 1223470
SRCLIST PROBLEM: srclist filled telemetry buffer
------ Start for Possible Stand-alone Circular ----
In response to GRB240421 (Swift/BAT trigger 1223470) at 09:42:54 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 872 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 19.6 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 mag. No
correction has been made for the expected extinction corresponding to E(B-V) of
0.183.
------- notes for trigger 1223470 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 240421d18h36m08s811665usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1223470
-expid=735386279 -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/1223470/
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 735386279.56016 or about 2024:112:09:57:54 UT
Found 2171 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 20% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 8 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 26 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 20.46 mag. Found 226 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
20% of the Genie image region.
Genie image analysis:
Found 77671.0 counts in the large background region of 5438.0 pixels or a rate
of 14.283 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 19.73 mag. for a
4-arcsec aperture.
Found 2855.4 counts in the XRT position region of 199.0 pixels or a rate of
14.349 counts/pixel in a radius of 8.0 arcsec. The net count rate (using large
background region) at the XRT position is 0.087 +/- 0.363 (1-sigma) cps or
22.25 mag and a range from 20.47 to 99.99 mag. The 3-sigma UL at the XRT
position is 1.175 cps or 19.43 mag. The number of srclist sources filled the
available telemetry. The weakest source detected was 19.15 mag. The closest
srclist source has ra= 299.7073 dec= -14.8660 mag=18.88 sep=32.24". The closest
Genie source has ra= 299.6967 dec= -14.8561 mag=18.77 sep=19.23".
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?
735386279 871 WHITE srclist found no candidates.
735386279 871 WHITE image found no candidates.
List afterglow candidates for other finding charts.
735385536 128 WHITE srclist found no candidates.
735385536 128 WHITE image found no candidates.
735385749 341 U srclist found no candidates.
735385749 341 U image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: -14.85961
GRB_ERROR: 5.25
GRB_RA: 299.70083
IMAGE_START_TIME: 09:57:54
MAGNITUDE: 19.4
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT