TDRSS lightcurve for Trigger=992444

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 21 Aug 20 13:16:18 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     992444,   Seg_Num: 0
GRB_RA:          353.570d {+23h 34m 17s} (J2000),
                 353.848d {+23h 35m 24s} (current),
                 352.892d {+23h 31m 34s} (1950)
GRB_DEC:         -48.277d {-48d 16' 37"} (J2000),
                 -48.163d {-48d 09' 46"} (current),
                 -48.554d {-48d 33' 13"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       24123 [cnts]    Image_Peak=456 [image_cnts]
TRIGGER_DUR:     16.384 [sec] 
TRIGGER_INDEX:   360     E_range: 15-25 keV
BKG_INTEN:       94791 [cnts]
BKG_TIME:        47606.50 SOD {13:13:26.50} UT
BKG_DUR:         64 [sec]
GRB_DATE:        19082 TJD;   234 DOY;   20/08/21
GRB_TIME:        47705.51 SOD {13:15:05.51} UT
GRB_PHI:         -162.49 [deg]
GRB_THETA:        32.69 [deg]
SOLN_STATUS:     0x203
RATE_SIGNIF:     18.22 [sigma]
IMAGE_SIGNIF:    7.51 [sigma]
MERIT_PARAMS:     +1  +0  +0  +4  +0  -2  +0  +0 +75  +0 
SUN_POSTN:       151.08d {+10h 04m 18s}  +11.84d {+11d 50' 27"}
SUN_DIST:        139.01 [deg]   Sun_angle= 10.5 [hr] (West of Sun)
MOON_POSTN:      184.19d {+12h 16m 45s}   +3.66d {+03d 39' 51"}
MOON_DIST:       134.62 [deg]
MOON_ILLUM:      8 [%]
GAL_COORDS:      333.13,-64.08 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      331.09,-40.93 [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:        Since the foreground interval count rate is less than the bkg interval (SAA exit), this is a questionable detection.  
COMMENTS:        This trigger occurred at longitude,latitude = 109.28,-3.83 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 21 Aug 20 13:52:04 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     992444,   Seg_Num: 0
GRB_RA:          353.570d {+23h 34m 17s} (J2000),
                 353.848d {+23h 35m 24s} (current),
                 352.892d {+23h 31m 34s} (1950)
GRB_DEC:         -48.277d {-48d 16' 37"} (J2000),
                 -48.163d {-48d 09' 46"} (current),
                 -48.554d {-48d 33' 13"} (1950)
GRB_DATE:        19082 TJD;   234 DOY;   20/08/21
GRB_TIME:        47705.51 SOD {13:15:05.51} UT
TRIGGER_INDEX:   360
GRB_PHI:         -162.49 [deg]
GRB_THETA:        32.69 [deg]
DELTA_TIME:      19.00 [sec]
TRIGGER_DUR:     16.384 [sec] 
SOLN_STATUS:     0x203
RATE_SIGNIF:     18.22 [sigma]
IMAGE_SIGNIF:    7.51 [sigma]
LC_URL:          sw00992444000msb.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

Extended TDRSS lc No.4

Plot creation:
Fri Aug 21 09:52:43 EDT 2020