TDRSS lightcurve for Trigger=645176
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sat 20 Jun 15 13:32:15 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 645176, Seg_Num: 0
GRB_RA: 306.002d {+20h 24m 00s} (J2000),
306.153d {+20h 24m 37s} (current),
305.512d {+20h 22m 03s} (1950)
GRB_DEC: +33.859d {+33d 51' 33"} (J2000),
+33.910d {+33d 54' 36"} (current),
+33.697d {+33d 41' 47"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 0 [cnts] Image_Peak=301726 [image_cnts]
TRIGGER_DUR: 192.000 [sec] (=3.2 [min])
TRIGGER_INDEX: 20000 E_range: 15-50 keV
BKG_INTEN: 0 [cnts]
BKG_TIME: 0.00 SOD {00:00:00.00} UT
BKG_DUR: 0 [sec]
GRB_DATE: 17193 TJD; 171 DOY; 15/06/20
GRB_TIME: 48506.25 SOD {13:28:26.25} UT
GRB_PHI: -125.96 [deg]
GRB_THETA: 0.04 [deg]
SOLN_STATUS: 0x1D
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 27.15 [sigma]
MERIT_PARAMS: +0 +0 +100 +8 +1 +9 +0 +1 +38 +0
SUN_POSTN: 88.83d {+05h 55m 18s} +23.43d {+23d 25' 56"}
SUN_DIST: 112.56 [deg] Sun_angle= 9.5 [hr] (West of Sun)
MOON_POSTN: 137.50d {+09h 09m 59s} +12.36d {+12d 21' 48"}
MOON_DIST: 132.48 [deg]
MOON_ILLUM: 16 [%]
GAL_COORDS: 73.11, -2.09 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 321.04, 51.11 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS: SWIFT-BAT GRB Coordinates.
COMMENTS: This is an image trigger. (The RATE_SIGNIF & BKG_{INTEN, TIME, DUR} are undefined.)
COMMENTS: A point_source was found.
COMMENTS: This matches a source in the on-board catalog: Num=23949=(null) (probably an AT_Slot).
COMMENTS: This does not match any source in the ground catalog.
COMMENTS: This is not a GRB.
COMMENTS: This trigger occurred at longitude,latitude = 235.71,3.05 [deg].
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sat 20 Jun 15 13:45:10 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 645176, Seg_Num: 0
GRB_RA: 306.002d {+20h 24m 00s} (J2000),
306.153d {+20h 24m 37s} (current),
305.512d {+20h 22m 03s} (1950)
GRB_DEC: +33.859d {+33d 51' 33"} (J2000),
+33.910d {+33d 54' 36"} (current),
+33.697d {+33d 41' 47"} (1950)
GRB_DATE: 17193 TJD; 171 DOY; 15/06/20
GRB_TIME: 48506.25 SOD {13:28:26.25} UT
TRIGGER_INDEX: 20000
GRB_PHI: -125.96 [deg]
GRB_THETA: 0.04 [deg]
DELTA_TIME: 0.00 [sec]
TRIGGER_DUR: 192.000 [sec] (=3.2 [min])
SOLN_STATUS: 0x1D
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 27.15 [sigma]
LC_URL: sw00645176000msb.lc
GCN template for BAT paragraph
Click here!
At 13:28:26 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 150620 ***A*** (trigger=645176). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 306.002, +33.859 which is
RA(J2000) = 20h 24m 00s
Dec(J2000) = +33d 51' 33"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a [**double-peaked**]
structure with a duration of about TTT sec. The peak count rate
was ~9418 counts/sec (15-350 keV), at ~-10 sec after the trigger.
Test version of draft template
Initial TDRSS lightcurve and spacecraft attitude plot
TDRSS lightcurve from T0-30 to T0+50 (zoom in)
TDRSS light curve from T0-1 to T0+2 (More zoom in)
1.6s binned TDRSS light curve
Tilan's background subtracted TDRSS light curves
Extended TDRSS light curve and spacecraft attitude plot(s)
Extended TDRSS lc No.1
Extended TDRSS lc No.2
Extended TDRSS lc No.3
Extended TDRSS lc No.4
TDRSS extended lightcurve from T0-1 to T0+2
T50 and T90 calculation
******************************************
battblocks v1.18
------------------------------------------
Input Data: bat_raw_lc.fits
Output GTI: bb.gti
Events to Skip: 128 Changepoint log(prob) Prior: 6.000000
Internal Tick: 1.000000e-04 s
Lookback time: 0 s
Bkg. Subtract?: yes (for fluence/T50/T90 calculations)
------------------------------------------
Estimated T90 duration: 202.624 s +/- 35.0685 s
Estimated T50 duration: 202.624 s +/- 108.204 s
Estimated Peak Interval: MET 456499854.71999997 +/- 0.500000 s
Estimated background rate 1: 18193.438 near MET 456499697.600000 s
Estimated background rate 2: 16528.565 near MET 456499903.872000 s
Estimated total duration: 202.624 s (for data selection)
(from MET 456499699.200000 to MET 456499901.824000)
Estimated total fluence: -455013.823553 count
Created GTI with 84 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 306.002 33.859 0.083
No match
Link to SIMBAD
Click here for the SIMBAD search!
Frank's UVOT result
Click here!
Frank's UVOT Blinking images
Click here!
Elevation angle of GRB/Sun at the ground telescope locations
GSFC, Greenbelt, Maryland
TimeUT Azimuth Elevation
Sun: 2015 6 20 13 266.852233 35.187903
Obj: 2015 6 20 13 112.706488 27.631565
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2015 6 20 13 246.547593 6.684496
Obj: 2015 6 20 13 106.039414 51.656828
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2015 6 20 13 243.632926 2.808816
Obj: 2015 6 20 13 102.290812 56.958476
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2015 6 20 13 222.871292 -32.645239
Obj: 2015 6 20 13 175.539007 75.868806
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2015 6 20 13 66.364145 -73.172900
Obj: 2015 6 20 13 222.696532 7.178731
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2015 6 20 13 146.403896 -24.049529
Obj: 2015 6 20 13 248.677150 32.701170
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2015 6 20 13 326.694448 83.702090
Obj: 2015 6 20 13 145.364823 -16.287654
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2015 6 20 13 232.165668 13.376147
Obj: 2015 6 20 13 121.752901 -13.287582
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger645176/tdrss_ql/
bat_raw_lc.fits : TDRSS FITS light curve from GCN
gcn_position.txt : GCN BAT position notice
ratelc_tdrss.qdp : QDP file of the TDRSS light curve
tdrss_lc.gif : GIF TDRSS light curve
sc_att.qdp : QDP file of the spacecraft attitude
sc_att.gif : GIF spacecraft attitude
bb.gti : Bayesian block GTI file (battblocks)
dur.gti : Duration GTI file (battblocks)
battblocks.log : Output log of battblocks
Plot creation:
Sat Jun 20 09:45:22 EDT 2015