TDRSS lightcurve for Trigger=863421

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 25 Sep 18 14:38:06 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     863421,   Seg_Num: 0
GRB_RA:          315.213d {+21h 00m 51s} (J2000),
                 315.606d {+21h 02m 25s} (current),
                 314.157d {+20h 56m 38s} (1950)
GRB_DEC:         -64.443d {-64d 26' 35"} (J2000),
                 -64.369d {-64d 22' 08"} (current),
                 -64.639d {-64d 38' 20"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       6189 [cnts]    Image_Peak=155 [image_cnts]
TRIGGER_DUR:     2.048 [sec] 
TRIGGER_INDEX:   486     E_range: 50-350 keV
BKG_INTEN:       46544 [cnts]
BKG_TIME:        52618.34 SOD {14:36:58.34} UT
BKG_DUR:         24 [sec]
GRB_DATE:        18386 TJD;   268 DOY;   18/09/25
GRB_TIME:        52651.94 SOD {14:37:31.94} UT
GRB_PHI:         -146.93 [deg]
GRB_THETA:        49.08 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     27.33 [sigma]
IMAGE_SIGNIF:    7.58 [sigma]
MERIT_PARAMS:     +1  +0  +0  +1  +3  -2  +0  +0 +27  +0 
SUN_POSTN:       182.28d {+12h 09m 07s}   -0.99d {-00d 59' 12"}
SUN_DIST:        106.33 [deg]   Sun_angle= -8.9 [hr] (East of Sun)
MOON_POSTN:        9.41d {+00h 37m 39s}   -0.84d {-00d 50' 37"}
MOON_DIST:        74.41 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      330.51,-38.09 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      295.65,-44.98 [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 = 76.41,-0.33 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 25 Sep 18 14:50:23 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     863421,   Seg_Num: 0
GRB_RA:          315.213d {+21h 00m 51s} (J2000),
                 315.606d {+21h 02m 25s} (current),
                 314.157d {+20h 56m 38s} (1950)
GRB_DEC:         -64.443d {-64d 26' 35"} (J2000),
                 -64.369d {-64d 22' 08"} (current),
                 -64.639d {-64d 38' 20"} (1950)
GRB_DATE:        18386 TJD;   268 DOY;   18/09/25
GRB_TIME:        52651.94 SOD {14:37:31.94} UT
TRIGGER_INDEX:   486
GRB_PHI:         -146.93 [deg]
GRB_THETA:        49.08 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     2.048 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     27.33 [sigma]
IMAGE_SIGNIF:    7.58 [sigma]
LC_URL:          sw00863421000msb.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 Sep 25 10:50:43 EDT 2018