TDRSS lightcurve for Trigger=768939

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 22 Aug 17 09:13:26 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     768939,   Seg_Num: 0
GRB_RA:           94.382d {+06h 17m 32s} (J2000),
                  94.748d {+06h 18m 59s} (current),
                  93.344d {+06h 13m 23s} (1950)
GRB_DEC:         +55.019d {+55d 01' 07"} (J2000),
                 +55.011d {+55d 00' 39"} (current),
                 +55.037d {+55d 02' 14"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       15078 [cnts]    Image_Peak=578 [image_cnts]
TRIGGER_DUR:     4.096 [sec] 
TRIGGER_INDEX:   300     E_range: 25-100 keV
BKG_INTEN:       153151 [cnts]
BKG_TIME:        33052.43 SOD {09:10:52.43} UT
BKG_DUR:         40 [sec]
GRB_DATE:        17987 TJD;   234 DOY;   17/08/22
GRB_TIME:        33111.05 SOD {09:11:51.05} UT
GRB_PHI:         -61.60 [deg]
GRB_THETA:        41.81 [deg]
SOLN_STATUS:     0x203
RATE_SIGNIF:     28.67 [sigma]
IMAGE_SIGNIF:    15.48 [sigma]
MERIT_PARAMS:     +1  +0  +0  +2  +2  +4  +0  +0 -46  +0 
SUN_POSTN:       151.59d {+10h 06m 21s}  +11.65d {+11d 39' 15"}
SUN_DIST:         61.79 [deg]   Sun_angle= 3.8 [hr] (West of Sun)
MOON_POSTN:      159.54d {+10h 38m 09s}   +9.98d {+09d 58' 52"}
MOON_DIST:        67.51 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:      159.38, 17.36 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       92.95, 31.62 [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 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:        Since the foreground interval count rate is less than the bkg interval (SAA exit), this is a questionable detection.

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 22 Aug 17 09:30:49 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     768939,   Seg_Num: 0
GRB_RA:           94.382d {+06h 17m 32s} (J2000),
                  94.748d {+06h 18m 59s} (current),
                  93.344d {+06h 13m 23s} (1950)
GRB_DEC:         +55.019d {+55d 01' 07"} (J2000),
                 +55.011d {+55d 00' 39"} (current),
                 +55.037d {+55d 02' 14"} (1950)
GRB_DATE:        17987 TJD;   234 DOY;   17/08/22
GRB_TIME:        33111.05 SOD {09:11:51.05} UT
TRIGGER_INDEX:   300
GRB_PHI:         -61.60 [deg]
GRB_THETA:        41.81 [deg]
DELTA_TIME:      58.00 [sec]
TRIGGER_DUR:     4.096 [sec] 
SOLN_STATUS:     0x203
RATE_SIGNIF:     28.67 [sigma]
IMAGE_SIGNIF:    15.48 [sigma]
LC_URL:          sw00768939000msb.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

Extended TDRSS lc No.3

Plot creation:
Tue Aug 22 05:32:22 EDT 2017