TDRSS lightcurve for Trigger=980421

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 01 Jul 20 12:47:33 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     980421,   Seg_Num: 0
GRB_RA:          123.555d {+08h 14m 13s} (J2000),
                 123.793d {+08h 15m 10s} (current),
                 122.974d {+08h 11m 54s} (1950)
GRB_DEC:         -14.494d {-14d 29' 37"} (J2000),
                 -14.557d {-14d 33' 24"} (current),
                 -14.341d {-14d 20' 27"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       5360 [cnts]    Image_Peak=193 [image_cnts]
TRIGGER_DUR:     2.048 [sec] 
TRIGGER_INDEX:   473     E_range: 25-100 keV
BKG_INTEN:       52377 [cnts]
BKG_TIME:        45982.79 SOD {12:46:22.79} UT
BKG_DUR:         24 [sec]
GRB_DATE:        19031 TJD;   183 DOY;   20/07/01
GRB_TIME:        46019.07 SOD {12:46:59.07} UT
GRB_PHI:         -65.22 [deg]
GRB_THETA:        19.61 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     9.00 [sigma]
IMAGE_SIGNIF:    7.22 [sigma]
MERIT_PARAMS:     +1  +0  +0  +1  +2  -3 -100  +0 -72  +0 
SUN_POSTN:       101.03d {+06h 44m 07s}  +23.05d {+23d 02' 55"}
SUN_DIST:         43.71 [deg]   Sun_angle= -1.5 [hr] (East of Sun)
MOON_POSTN:      230.96d {+15h 23m 50s}  -15.43d {-15d 26' 00"}
MOON_DIST:       102.03 [deg]
MOON_ILLUM:      84 [%]
GAL_COORDS:      235.63, 10.98 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      129.87,-33.41 [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 = 356.28,-0.71 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 01 Jul 20 13:09:13 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     980421,   Seg_Num: 0
GRB_RA:          123.555d {+08h 14m 13s} (J2000),
                 123.793d {+08h 15m 10s} (current),
                 122.974d {+08h 11m 54s} (1950)
GRB_DEC:         -14.494d {-14d 29' 37"} (J2000),
                 -14.557d {-14d 33' 24"} (current),
                 -14.341d {-14d 20' 27"} (1950)
GRB_DATE:        19031 TJD;   183 DOY;   20/07/01
GRB_TIME:        46019.07 SOD {12:46:59.07} UT
TRIGGER_INDEX:   473
GRB_PHI:         -65.22 [deg]
GRB_THETA:        19.61 [deg]
DELTA_TIME:      51.00 [sec]
TRIGGER_DUR:     2.048 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     9.00 [sigma]
IMAGE_SIGNIF:    7.22 [sigma]
LC_URL:          sw00980421000msb.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 Jul  1 09:09:43 EDT 2020