srclist overlap message for exposure 1 of trigger 1036139
uvot_overlap.pl vrs. 2010-12-20b fem started at 210308d16h45m23s027901usUT
The observation of trigger 1036139 started 2021-03-07T08:44:45.2
Examining file ./1036139_g126_uvot_sky_srclist.fits
The exposure ID is 636799485
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (119.1780,-66.9665) with a roll angle of 229.6
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 (119.1900,-66.9630) with a radius of 3.000 arc min
This is 0.351 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 (119.2383,-66.9709) with a radius of 0.025 arc min
This is 1.439 arc min from the center of the uvot region
The area of the XRT error circle is 0.002 sq. arc min
The UVOT/XRT overlap is 0.002 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 1 of trigger 1036139
find_uvot_ag.pl vrs. 2020-10-30 fem started at 210308d16h45m25s162551usUT
Observation start time is 2021-03-07T08:44:45.2
Examining file ./1036139_g126_uvot_catalog_srclist.fits
The exposure ID is 636799485
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 146 detected source(s) for 1036139_g126
Aspect correction adds 0.00094 degrees (0.227 sec of time = 1.33 arc sec) to RA
Aspect correction adds -0.00133 degrees (-4.77 arcsec) to Dec
Total aspect correction is 4.96 arcsec
Star catalogs centered at 119.1980 , -66.9698 with radius 6.65 arc min.
n_usno: 999 n_gsc: 0
*** WARNING -- bright star catalog has 3 entries brighter than 12 mag
The brightest has mag 9.94
RA DEC Mag Color
bright star 0: 119.01690 (07:56:04.06) -66.99528 (-66:59:43.0) 10.26 USNO-V
bright star 1: 119.24188 (07:56:58.05) -66.87467 (-66:52:28.8) 9.94 USNO-R
bright star 2: 119.42639 (07:57:42.33) -67.01341 (-67:00:48.3) 10.04 USNO-V
Mean distance difference (CAT_DELTA) for 127 matched entries is 0.845" for 1036139_g126
Mean and std. dev of mag. difference (MAG_DELTA) are 1.794 and 0.708 for 1036139_g126
Found 26 entries without IDs and 3 entries that are acceptable afterglow candidates for 1036139_g126.
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.
16 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=119.1900 (07:56:45.60) DEC=-66.9630 (-66:57:46.8)
XRT distances are from RA=119.2383 (07:56:57.19) DEC=-66.9709 (-66:58:15.3)
-----------------
Entry 29 in the list of sources is a candidate afterglow for 1036139_g126 with 1x1 stamp
ra=119.32687 (07:57:18.45) dec=-66.96058 (-66:57:38.1) +/- 1.1" mag=19.60+/-0.35
dist=130.2 REFID=144
*** The position of this source is inconsistent with the XRT position.
The position is 193.0 arc sec from the BAT position.
src: 29 distr. of nearby unmatched sources: 0 0 0 0 0
Found 1 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
119.3382 -66.9632 18.5 -1 USNO-B1 13.42 12.23 12.76 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 60 in the list of sources is a candidate afterglow for 1036139_g126 with 1x1 stamp
ra=119.16644 (07:56:39.94) dec=-66.92830 (-66:55:41.9) +/- 1.1" mag=19.60+/-0.35
dist=183.9 REFID=145
*** The position of this source is inconsistent with the XRT position.
The position is 129.3 arc sec from the BAT position.
src: 60 distr. of nearby unmatched sources: 0 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
119.1779 -66.9306 18.3 -1 USNO-B1 14.92 13.48 14.12
119.1563 -66.9315 18.4 -1 USNO-B1 20.26 99.99 99.99
119.1635 -66.9286 4.3 -1 USNO-B1 16.58 15.54 16.00
119.1637 -66.9281 4.0 -1 USNO-B1 16.41 99.99 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
-----------------
Entry 112 in the list of sources is a candidate afterglow for 1036139_g126 with 3x3 stamp
ra=119.04861 (07:56:11.67) dec=-66.96178 (-66:57:42.4) +/- 1.1" mag=19.60+/-0.35
dist=269.2 REFID=129
*** The position of this source is inconsistent with the XRT position.
The position is 199.2 arc sec from the BAT position.
src: 112 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
119.0568 -66.9663 20.0 -1 USNO-B1 19.81 19.47 19.62
119.0545 -66.9660 17.4 -1 USNO-B1 20.81 20.06 20.39
119.0491 -66.9627 3.4 -1 USNO-B1 15.86 14.59 15.15 *
119.0402 -66.9601 13.3 -1 USNO-B1 19.65 18.66 19.10
119.0380 -66.9636 16.3 -1 USNO-B1 20.45 20.08 20.24
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
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 1036139
------ Start for Possible Stand-alone Circular ----
In response to GRB210307 (Swift/BAT trigger 1036139) at 08:42:38 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 100 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
0.138.
------- notes for trigger 1036139 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 210308d16h45m28s616641usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1036139
-expid=636799485 -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/1036139/
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 636799485.19294 or about 2021:066:08:44:40 UT
Found 995 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 15% of the srclist region. Found 146 sources in
srclist catalog. Found 26 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 17 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 20.85 mag. Found 117 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
15% of the Genie image region.
Genie image analysis:
Found 39612.6 counts in the large background region of 5678.0 pixels or a rate
of 6.977 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 20.12 mag. for a
4-arcsec aperture.
Found 1372.1 counts in the XRT position region of 205.0 pixels or a rate of
6.693 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is -0.232 +/- 0.269 (1-sigma) cps. The
3-sigma UL at the XRT position is 0.806 cps or 19.84 mag. The closest srclist
source has ra= 119.2305 dec= -66.9669 mag=17.47 sep=18.32". The closest Genie
source has ra= 119.2304 dec= -66.9667 mag=16.64 sep=18.82".
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?
636799485 99 WHITE srclist found no candidates.
636799485 99 WHITE image found no candidates.
List afterglow candidates for other finding charts.
636799697 311 U srclist found no candidates.
636799697 311 U image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: -66.97092
GRB_ERROR: 5
GRB_RA: 119.23829
IMAGE_START_TIME: 08:44:40
MAGNITUDE: 19.8
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT