TDRSS lightcurve for Trigger=770431
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sat 02 Sep 17 20:22:05 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 770431, Seg_Num: 0
GRB_RA: 233.895d {+15h 35m 35s} (J2000),
234.245d {+15h 36m 59s} (current),
232.908d {+15h 31m 38s} (1950)
GRB_DEC: -57.213d {-57d 12' 44"} (J2000),
-57.270d {-57d 16' 12"} (current),
-57.047d {-57d 02' 47"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 0 [cnts] Image_Peak=3590 [image_cnts]
TRIGGER_DUR: 336.000 [sec] (=5.6 [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: 17998 TJD; 245 DOY; 17/09/02
GRB_TIME: 72036.37 SOD {20:00:36.37} UT
GRB_PHI: 46.71 [deg]
GRB_THETA: 16.82 [deg]
SOLN_STATUS: 0x13
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 7.61 [sigma]
MERIT_PARAMS: +1 +0 +0 +6 +1 -2 +0 +1 -5 +0
SUN_POSTN: 162.05d {+10h 48m 11s} +7.61d {+07d 36' 39"}
SUN_DIST: 87.00 [deg] Sun_angle= -4.8 [hr] (East of Sun)
MOON_POSTN: 301.86d {+20h 07m 26s} -17.93d {-17d 56' 02"}
MOON_DIST: 62.94 [deg]
MOON_ILLUM: 88 [%]
GAL_COORDS: 323.76, -1.13 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 246.56,-36.68 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS: SWIFT-BAT GRB Coordinates.
COMMENTS: This Notice was delayed by more than 60 sec past the end of the trigger integration interval;
COMMENTS: probably due to it occurring during a Malindi downlink session.
COMMENTS: This is an image trigger. (The RATE_SIGNIF & BKG_{INTEN, TIME, DUR} are undefined.)
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 = 261.15,-16.61 [deg].
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sat 02 Sep 17 20:25:48 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 770431, Seg_Num: 0
GRB_RA: 233.895d {+15h 35m 35s} (J2000),
234.245d {+15h 36m 59s} (current),
232.908d {+15h 31m 38s} (1950)
GRB_DEC: -57.213d {-57d 12' 44"} (J2000),
-57.270d {-57d 16' 12"} (current),
-57.047d {-57d 02' 47"} (1950)
GRB_DATE: 17998 TJD; 245 DOY; 17/09/02
GRB_TIME: 72036.37 SOD {20:00:36.37} UT
TRIGGER_INDEX: 20000
GRB_PHI: 46.71 [deg]
GRB_THETA: 16.82 [deg]
DELTA_TIME: 0.00 [sec]
TRIGGER_DUR: 336.000 [sec] (=5.6 [min])
SOLN_STATUS: 0x13
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 7.61 [sigma]
LC_URL: sw00770431000msb.lc
GCN template for BAT paragraph
Click here!
At 20:00:36 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 170902 ***A*** (trigger=770431). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 233.895, -57.213 which is
RA(J2000) = 15h 35m 35s
Dec(J2000) = -57d 12' 44"
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 ~1273 counts/sec (15-350 keV), at ~7 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
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 background rate 1: 5559.550 near MET 526075256.576000 s
Estimated background rate 2: 5658.377 near MET 526075361.536000 s
Estimated total fluence: 0.000000 count
Created GTI with 2 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 233.895 -57.213 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 9 2 20 62.169617 40.446434
Obj: 2017 9 2 20 344.360701 -9.453469
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2017 9 2 20 20.552417 64.573150
Obj: 2017 9 2 20 330.144323 -13.705759
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2017 9 2 20 6.278414 64.121319
Obj: 2017 9 2 20 327.899757 -17.730543
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2017 9 2 20 284.302148 53.184116
Obj: 2017 9 2 20 325.011791 -26.329201
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2017 9 2 20 264.150374 -5.094511
Obj: 2017 9 2 20 351.174224 -0.391066
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2017 9 2 20 253.367831 -10.219493
Obj: 2017 9 2 20 0.182532 -67.146413
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2017 9 2 20 102.392533 -6.529301
Obj: 2017 9 2 20 15.458379 0.407482
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2017 9 2 20 120.895773 29.856664
Obj: 2017 9 2 20 335.565734 58.477830
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger770431/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 Sep 2 16:33:25 EDT 2017