srclist overlap message for exposure 1 of trigger 1048372
uvot_overlap.pl vrs. 2010-12-20b fem started at 210515d08h22m08s830718usUT
The observation of trigger 1048372 started 2021-05-14T18:38:44.0
Examining file ./1048372_g642710324_uvot_sky_srclist.fits
The exposure ID is 642710324
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (2.9657,-21.8903) with a roll angle of 53.3
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 (2.9670,-21.8750) with a radius of 3.000 arc min
This is 0.919 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 (2.9618,-21.8945) with a radius of 0.033 arc min
This is 0.336 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 1048372
find_uvot_ag.pl vrs. 2020-10-30 fem started at 210515d08h22m10s823613usUT
Observation start time is 2021-05-14T18:38:44.0
Examining file ./1048372_g642710324_uvot_catalog_srclist.fits
The exposure ID is 642710324
The exposure is 149.846 sec.
The bin size is 2 pixels
The filter is WHITE
There are 38 detected source(s) for 1048372_g642710324
Aspect correction adds 0.00016 degrees (0.038 sec of time = 0.53 arc sec) to RA
Aspect correction adds 0.00079 degrees ( 2.85 arcsec) to Dec
Total aspect correction is 2.90 arcsec
Star catalogs centered at 2.9569 , -21.8975 with radius 8.50 arc min.
n_usno: 875 n_gsc: 0
*** WARNING -- bright star catalog has 2 entries brighter than 12 mag
The brightest has mag 11.10
RA DEC Mag Color
bright star 0: 2.94828 (00:11:47.59) -21.90591 (-21:54:21.3) 11.10 USNO-B
bright star 1: 2.94896 (00:11:47.75) -21.90655 (-21:54:23.6) 11.95 USNO-V
Mean distance difference (CAT_DELTA) for 36 matched entries is 0.611" for 1048372_g642710324
Mean and std. dev of mag. difference (MAG_DELTA) are 1.644 and 1.263 for 1048372_g642710324
Found 4 entries without IDs and 0 entries that are acceptable afterglow candidates for 1048372_g642710324.
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.
1 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA= 2.9670 (00:11:52.08) DEC=-21.8750 (-21:52:30.0)
XRT distances are from RA= 2.9618 (00:11:50.84) DEC=-21.8945 (-21:53:40.3)
Found NO acceptable entries.
Unidentified entry closest to XRT position is no. 7:
ra= 2.94967 dec=-21.90753 +/- 1.1" mag=19.16+/-0.35 dist=62.0 REFID=24
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",
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 1048372
------ Start for Possible Stand-alone Circular ----
In response to GRB210514 (Swift/BAT trigger 1048372) at 17:07:49 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 5427 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 0.022.
------- notes for trigger 1048372 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 210515d08h22m15s019040usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1048372
-expid=642710324 -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/1048372/
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 642710324.01222 or about 2021:134:18:38:39 UT
Found 871 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 8% of the srclist region. Found 38 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 7 source(s) in Genie image catalog. Found 1 Genie image source(s) without
IDs. There are 0 good candidate(s) in the Genie image catalog. Good candidates
must be brighter than 20.31 mag. Found 102 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 8% of the
Genie image region.
Genie image analysis:
Found 113197.5 counts in the large background region of 5981.0 pixels or a rate
of 18.926 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 19.58 mag. for a
4-arcsec aperture.
Found 3831.4 counts in the XRT position region of 199.0 pixels or a rate of
19.253 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 0.271 +/- 0.447 (1-sigma) cps or
21.02 mag and a range from 19.96 to 99.99 mag. The 3-sigma UL at the XRT
position is 1.611 cps or 19.08 mag. The closest srclist source has ra= 2.9587
dec= -21.8957 mag=16.56 sep=11.43". The closest Genie source has ra= 2.9587
dec= -21.8957 mag=16.12 sep=11.34".
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?
642710324 5427 WHITE srclist found no candidates.
642710324 5427 WHITE image found no candidates.
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: -21.89453
GRB_ERROR: 5
GRB_RA: 2.96183
IMAGE_START_TIME: 18:38:39
MAGNITUDE: 19.1
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT