TDRSS lightcurve for Trigger=748898

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 19 Apr 17 13:27:03 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     748898,   Seg_Num: 0
GRB_RA:           79.866d {+05h 19m 28s} (J2000),
                  80.050d {+05h 20m 12s} (current),
                  79.333d {+05h 17m 20s} (1950)
GRB_DEC:         -21.420d {-21d 25' 12"} (J2000),
                 -21.404d {-21d 24' 12"} (current),
                 -21.471d {-21d 28' 13"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       4337 [cnts]    Image_Peak=184 [image_cnts]
TRIGGER_DUR:     1.024 [sec] 
TRIGGER_INDEX:   137     E_range: 15-50 keV
BKG_INTEN:       28112 [cnts]
BKG_TIME:        48381.06 SOD {13:26:21.06} UT
BKG_DUR:         8 [sec]
GRB_DATE:        17862 TJD;   109 DOY;   17/04/19
GRB_TIME:        48400.20 SOD {13:26:40.20} UT
GRB_PHI:           5.00 [deg]
GRB_THETA:        40.07 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     11.53 [sigma]
IMAGE_SIGNIF:    7.66 [sigma]
MERIT_PARAMS:     +1  +0  +0  +0  +1  -2  +0  +0 -48  +0 
SUN_POSTN:        27.61d {+01h 50m 26s}  +11.36d {+11d 21' 33"}
SUN_DIST:         61.02 [deg]   Sun_angle= -3.5 [hr] (East of Sun)
MOON_POSTN:      302.79d {+20h 11m 10s}  -17.41d {-17d 24' 31"}
MOON_DIST:       122.91 [deg]
MOON_ILLUM:      49 [%]
GAL_COORDS:      223.46,-29.35 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       76.75,-44.39 [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 = 352.38,-12.91 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 19 Apr 17 13:47:19 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     748898,   Seg_Num: 0
GRB_RA:           79.866d {+05h 19m 28s} (J2000),
                  80.050d {+05h 20m 12s} (current),
                  79.333d {+05h 17m 20s} (1950)
GRB_DEC:         -21.420d {-21d 25' 12"} (J2000),
                 -21.404d {-21d 24' 12"} (current),
                 -21.471d {-21d 28' 13"} (1950)
GRB_DATE:        17862 TJD;   109 DOY;   17/04/19
GRB_TIME:        48400.20 SOD {13:26:40.20} UT
TRIGGER_INDEX:   137
GRB_PHI:           5.00 [deg]
GRB_THETA:        40.07 [deg]
DELTA_TIME:      6.00 [sec]
TRIGGER_DUR:     1.024 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     11.53 [sigma]
IMAGE_SIGNIF:    7.66 [sigma]
LC_URL:          sw00748898000msb.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:
Wed Apr 19 09:53:03 EDT 2017