TDRSS lightcurve for Trigger=743086
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sat 18 Mar 17 15:28:09 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 743086, Seg_Num: 0
GRB_RA: 284.279d {+18h 57m 07s} (J2000),
284.490d {+18h 57m 58s} (current),
283.668d {+18h 54m 40s} (1950)
GRB_DEC: +6.269d {+06d 16' 10"} (J2000),
+6.293d {+06d 17' 36"} (current),
+6.202d {+06d 12' 08"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 1901 [cnts] Image_Peak=108 [image_cnts]
TRIGGER_DUR: 0.512 [sec]
TRIGGER_INDEX: 124 E_range: 25-100 keV
BKG_INTEN: 20879 [cnts]
BKG_TIME: 55661.22 SOD {15:27:41.22} UT
BKG_DUR: 8 [sec]
GRB_DATE: 17830 TJD; 77 DOY; 17/03/18
GRB_TIME: 55672.55 SOD {15:27:52.55} UT
GRB_PHI: 25.89 [deg]
GRB_THETA: 29.98 [deg]
SOLN_STATUS: 0x20000003
RATE_SIGNIF: 14.93 [sigma]
IMAGE_SIGNIF: 7.21 [sigma]
MERIT_PARAMS: +1 +0 +0 -1 +2 -3 +0 +1 -27 +0
SUN_POSTN: 358.37d {+23h 53m 29s} -0.71d {-00d 42' 19"}
SUN_DIST: 74.06 [deg] Sun_angle= 4.9 [hr] (West of Sun)
MOON_POSTN: 245.17d {+16h 20m 42s} -16.17d {-16d 10' 05"}
MOON_DIST: 44.92 [deg]
MOON_ILLUM: 69 [%]
GAL_COORDS: 39.16, 1.60 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 286.26, 28.91 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS: SWIFT-BAT GRB Coordinates.
COMMENTS: This is a rate trigger.
COMMENTS: A point_source was found.
COMMENTS: This does not match any source in the on-board catalog.
COMMENTS: This does not match any source in the ground catalog.
COMMENTS: This is a GRB.
COMMENTS: This trigger occurred at longitude,latitude = 209.07,-10.58 [deg].
COMMENTS:
COMMENTS: NOTE: This BAT event is temporally(1.0<100sec) coincident with the FERMI_GBM event (trignum=511543678).
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sat 18 Mar 17 16:02:14 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 743086, Seg_Num: 0
GRB_RA: 284.279d {+18h 57m 07s} (J2000),
284.490d {+18h 57m 58s} (current),
283.668d {+18h 54m 40s} (1950)
GRB_DEC: +6.269d {+06d 16' 10"} (J2000),
+6.293d {+06d 17' 36"} (current),
+6.202d {+06d 12' 08"} (1950)
GRB_DATE: 17830 TJD; 77 DOY; 17/03/18
GRB_TIME: 55672.55 SOD {15:27:52.55} UT
TRIGGER_INDEX: 124
GRB_PHI: 25.89 [deg]
GRB_THETA: 29.98 [deg]
DELTA_TIME: -11.00 [sec]
TRIGGER_DUR: 0.512 [sec]
SOLN_STATUS: 0x3
RATE_SIGNIF: 14.93 [sigma]
IMAGE_SIGNIF: 7.21 [sigma]
LC_URL: sw00743086000msb.lc
GCN template for BAT paragraph
Click here!
At 15:27:52 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 170318 ***A*** (trigger=743086). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 284.279, +6.269 which is
RA(J2000) = 18h 57m 07s
Dec(J2000) = +06d 16' 10"
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 ~2351 counts/sec (15-350 keV), at ~0 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: 25.472 s +/- 24.032 s
Estimated T50 duration: 25.216 s +/- 24.224 s
Estimated Peak Interval: MET 511543691.58399999 +/- 0.500000 s
Estimated background rate 1: 5204.983 near MET 511543679.040000 s
Estimated background rate 2: 5468.506 near MET 511543809.536000 s
Estimated total duration: 51.072 s (for data selection)
(from MET 511543690.880000 to MET 511543741.952000)
Estimated total fluence: 1584.426094 count
Created GTI with 6 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 284.279 6.269 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: 2017 3 18 16 331.193995 46.480856
Obj: 2017 3 18 16 71.064218 31.107599
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2017 3 18 16 291.967562 30.054935
Obj: 2017 3 18 16 41.392800 58.151288
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2017 3 18 16 288.650135 24.744327
Obj: 2017 3 18 16 29.730888 59.736950
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2017 3 18 16 267.943777 -7.752002
Obj: 2017 3 18 16 296.836336 62.990372
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2017 3 18 16 316.697680 -49.304766
Obj: 2017 3 18 16 259.132579 5.570760
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2017 3 18 16 197.567305 -55.047972
Obj: 2017 3 18 16 261.347527 -1.504596
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2017 3 18 16 59.141764 41.989302
Obj: 2017 3 18 16 107.484117 -17.209688
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2017 3 18 16 205.852706 57.694227
Obj: 2017 3 18 16 111.598249 21.550997
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger743086/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 Mar 18 12:11:23 EDT 2017