TDRSS lightcurve for Trigger=773898

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 24 Sep 17 10:50:17 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     773898,   Seg_Num: 0
GRB_RA:          255.073d {+17h 00m 18s} (J2000),
                 255.386d {+17h 01m 33s} (current),
                 254.192d {+16h 56m 46s} (1950)
GRB_DEC:         -41.934d {-41d 56' 02"} (J2000),
                 -41.959d {-41d 57' 32"} (current),
                 -41.860d {-41d 51' 36"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=1814 [image_cnts]
TRIGGER_DUR:     88.000 [sec] 
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:        18020 TJD;   267 DOY;   17/09/24
GRB_TIME:        38540.26 SOD {10:42:20.26} UT
GRB_PHI:          25.13 [deg]
GRB_THETA:         7.98 [deg]
SOLN_STATUS:     0x513
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    7.93 [sigma]
MERIT_PARAMS:     +1  +0  +0  +6  +1  -2  +0  +1 -21  +0 
SUN_POSTN:       181.45d {+12h 05m 49s}   -0.63d {-00d 37' 47"}
SUN_DIST:         77.69 [deg]   Sun_angle= -4.9 [hr] (East of Sun)
MOON_POSTN:      230.35d {+15h 21m 25s}  -13.14d {-13d 08' 09"}
MOON_DIST:        36.09 [deg]
MOON_ILLUM:      18 [%]
GAL_COORDS:      344.09,  0.22 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      258.30,-19.10 [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 matches a source in the ground catalog: AX17007-4139,   delta=0.278 [deg].  
COMMENTS:        This is not a GRB.  
COMMENTS:        This trigger occurred at longitude,latitude = 134.20,14.02 [deg].

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 24 Sep 17 10:58:18 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     773898,   Seg_Num: 0
GRB_RA:          255.073d {+17h 00m 18s} (J2000),
                 255.386d {+17h 01m 33s} (current),
                 254.192d {+16h 56m 46s} (1950)
GRB_DEC:         -41.934d {-41d 56' 02"} (J2000),
                 -41.959d {-41d 57' 32"} (current),
                 -41.860d {-41d 51' 36"} (1950)
GRB_DATE:        18020 TJD;   267 DOY;   17/09/24
GRB_TIME:        38540.26 SOD {10:42:20.26} UT
TRIGGER_INDEX:   20000
GRB_PHI:          25.13 [deg]
GRB_THETA:         7.98 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     88.000 [sec] 
SOLN_STATUS:     0x513
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    7.93 [sigma]
LC_URL:          sw00773898000msb.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:
Sun Sep 24 06:59:13 EDT 2017