TDRSS lightcurve for Trigger=821902

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 04 Apr 18 02:11:59 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     821902,   Seg_Num: 0
GRB_RA:           53.384d {+03h 33m 32s} (J2000),
                  53.520d {+03h 34m 05s} (current),
                  53.012d {+03h 32m 03s} (1950)
GRB_DEC:         -50.195d {-50d 11' 41"} (J2000),
                 -50.135d {-50d 08' 03"} (current),
                 -50.362d {-50d 21' 42"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       5995 [cnts]    Image_Peak=464 [image_cnts]
TRIGGER_DUR:     1.024 [sec] 
TRIGGER_INDEX:   155     E_range: 50-350 keV
BKG_INTEN:       27355 [cnts]
BKG_TIME:        7891.27 SOD {02:11:31.27} UT
BKG_DUR:         8 [sec]
GRB_DATE:        18212 TJD;    94 DOY;   18/04/04
GRB_TIME:        7904.07 SOD {02:11:44.07} UT
GRB_PHI:         -147.22 [deg]
GRB_THETA:        25.14 [deg]
SOLN_STATUS:     0x20010103
RATE_SIGNIF:     39.33 [sigma]
IMAGE_SIGNIF:    14.59 [sigma]
MERIT_PARAMS:     +1  +0  +0  +0  +3  +3  +0  +0 -41  +0 
SUN_POSTN:        13.14d {+00h 52m 33s}   +5.63d {+05d 37' 34"}
SUN_DIST:         65.75 [deg]   Sun_angle= -2.7 [hr] (East of Sun)
MOON_POSTN:      236.45d {+15h 45m 48s}  -14.86d {-14d 51' 20"}
MOON_DIST:       114.96 [deg]
MOON_ILLUM:      86 [%]
GAL_COORDS:      260.92,-51.57 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       23.48,-65.40 [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 position matches one of the nearby galaxy sources in the on-board catalog!  
COMMENTS:        This does not match any source in the on-board catalog.  
COMMENTS:        This matches a source in the ground catalog: 2M033312-502451,   delta=0.225 [deg].  
COMMENTS:        This is a GRB in nearby galaxy or it is noise.  
COMMENTS:        This trigger occurred at longitude,latitude = 176.20,13.13 [deg].  
COMMENTS:

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 04 Apr 18 02:23:35 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     821902,   Seg_Num: 0
GRB_RA:           53.384d {+03h 33m 32s} (J2000),
                  53.520d {+03h 34m 05s} (current),
                  53.012d {+03h 32m 03s} (1950)
GRB_DEC:         -50.195d {-50d 11' 41"} (J2000),
                 -50.135d {-50d 08' 03"} (current),
                 -50.362d {-50d 21' 42"} (1950)
GRB_DATE:        18212 TJD;    94 DOY;   18/04/04
GRB_TIME:        7904.07 SOD {02:11:44.07} UT
TRIGGER_INDEX:   155
GRB_PHI:         -147.22 [deg]
GRB_THETA:        25.14 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     1.024 [sec] 
SOLN_STATUS:     0x103
RATE_SIGNIF:     39.33 [sigma]
IMAGE_SIGNIF:    14.59 [sigma]
LC_URL:          sw00821902000msb.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:
Tue Apr  3 22:24:23 EDT 2018