TDRSS lightcurve for Trigger=769177

Notes:

• 1) None of the TDRSS light curves are background subtracted.

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 23 Aug 17 22:17:01 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     769177,   Seg_Num: 0
GRB_RA:          188.719d {+12h 34m 53s} (J2000),
                 188.935d {+12h 35m 44s} (current),
                 188.108d {+12h 32m 26s} (1950)
GRB_DEC:         +35.582d {+35d 34' 55"} (J2000),
                 +35.485d {+35d 29' 06"} (current),
                 +35.857d {+35d 51' 27"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       1892 [cnts]    Image_Peak=144 [image_cnts]
TRIGGER_DUR:     0.512 [sec] 
TRIGGER_INDEX:   124     E_range: 25-100 keV
BKG_INTEN:       20272 [cnts]
BKG_TIME:        80196.42 SOD {22:16:36.42} UT
BKG_DUR:         8 [sec]
GRB_DATE:        17988 TJD;   235 DOY;   17/08/23
GRB_TIME:        80208.32 SOD {22:16:48.32} UT
GRB_PHI:         -138.08 [deg]
GRB_THETA:        24.07 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     15.96 [sigma]
IMAGE_SIGNIF:    9.42 [sigma]
MERIT_PARAMS:     +1  +0  +0  -1  +2  +0 -100  +0 -76  +0 
SUN_POSTN:       153.01d {+10h 12m 02s}  +11.13d {+11d 07' 48"}
SUN_DIST:         40.62 [deg]   Sun_angle= -2.4 [hr] (East of Sun)
MOON_POSTN:      179.76d {+11h 59m 03s}   +3.38d {+03d 22' 37"}
MOON_DIST:        33.21 [deg]
MOON_ILLUM:      6 [%]
GAL_COORDS:      144.57, 80.84 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      171.63, 35.65 [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 = 179.14,19.97 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 23 Aug 17 22:33:36 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     769177,   Seg_Num: 0
GRB_RA:          188.719d {+12h 34m 53s} (J2000),
                 188.935d {+12h 35m 44s} (current),
                 188.108d {+12h 32m 26s} (1950)
GRB_DEC:         +35.582d {+35d 34' 55"} (J2000),
                 +35.485d {+35d 29' 06"} (current),
                 +35.857d {+35d 51' 27"} (1950)
GRB_DATE:        17988 TJD;   235 DOY;   17/08/23
GRB_TIME:        80208.32 SOD {22:16:48.32} UT
TRIGGER_INDEX:   124
GRB_PHI:         -138.08 [deg]
GRB_THETA:        24.07 [deg]
DELTA_TIME:      -69.00 [sec]
TRIGGER_DUR:     0.512 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     15.96 [sigma]
IMAGE_SIGNIF:    9.42 [sigma]
LC_URL:          sw00769177000msb.lc

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

Extended TDRSS light curve and spacecraft attitude plot(s)

Extended TDRSS lc No.1

Extended TDRSS lc No.2

Plot creation:
Wed Aug 23 18:35:16 EDT 2017