TDRSS lightcurve for Trigger=819863

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 30 Mar 18 03:09:34 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     819863,   Seg_Num: 0
GRB_RA:           95.803d {+06h 23m 13s} (J2000),
                  95.821d {+06h 23m 17s} (current),
                  95.755d {+06h 23m 01s} (1950)
GRB_DEC:         -64.954d {-64d 57' 12"} (J2000),
                 -64.964d {-64d 57' 49"} (current),
                 -64.925d {-64d 55' 31"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       15174 [cnts]    Image_Peak=312 [image_cnts]
TRIGGER_DUR:     1.024 [sec] 
TRIGGER_INDEX:   159     E_range: 50-350 keV
BKG_INTEN:       95640 [cnts]
BKG_TIME:        11323.29 SOD {03:08:43.29} UT
BKG_DUR:         8 [sec]
GRB_DATE:        18207 TJD;    89 DOY;   18/03/30
GRB_TIME:        11342.24 SOD {03:09:02.24} UT
GRB_PHI:         -24.70 [deg]
GRB_THETA:        24.65 [deg]
SOLN_STATUS:     0xC3
RATE_SIGNIF:     18.00 [sigma]
IMAGE_SIGNIF:    6.55 [sigma]
MERIT_PARAMS:     +1  +0  +0  +0  +3  -4  +0  +0  +3  +0 
SUN_POSTN:         8.61d {+00h 34m 28s}   +3.71d {+03d 42' 53"}
SUN_DIST:         92.18 [deg]   Sun_angle= -5.8 [hr] (East of Sun)
MOON_POSTN:      173.54d {+11h 34m 09s}   +6.30d {+06d 18' 14"}
MOON_DIST:        90.57 [deg]
MOON_ILLUM:      98 [%]
GAL_COORDS:      274.70,-27.35 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      148.67,-87.13 [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 during a high background rate interval.  
COMMENTS:        Since the IMAGE_SIGNIF is less than 7 sigma, this is a questionable detection.  
COMMENTS:        This trigger occurred at longitude,latitude = 278.46,-12.98 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 30 Mar 18 03:14:34 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     819863,   Seg_Num: 0
GRB_RA:           95.803d {+06h 23m 13s} (J2000),
                  95.821d {+06h 23m 17s} (current),
                  95.755d {+06h 23m 01s} (1950)
GRB_DEC:         -64.954d {-64d 57' 12"} (J2000),
                 -64.964d {-64d 57' 49"} (current),
                 -64.925d {-64d 55' 31"} (1950)
GRB_DATE:        18207 TJD;    89 DOY;   18/03/30
GRB_TIME:        11342.24 SOD {03:09:02.24} UT
TRIGGER_INDEX:   159
GRB_PHI:         -24.70 [deg]
GRB_THETA:        24.65 [deg]
DELTA_TIME:      15819.00 [sec]
TRIGGER_DUR:     1.024 [sec] 
SOLN_STATUS:     0xC3
RATE_SIGNIF:     18.00 [sigma]
IMAGE_SIGNIF:    6.55 [sigma]
LC_URL:          sw00819863000msb.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

Plot creation:
Thu Mar 29 23:16:19 EDT 2018