TDRSS lightcurve for Trigger=748858

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 07:44:52 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     748858,   Seg_Num: 0
GRB_RA:          199.853d {+13h 19m 25s} (J2000),
                 200.066d {+13h 20m 16s} (current),
                 199.238d {+13h 16m 57s} (1950)
GRB_DEC:         +15.471d {+15d 28' 16"} (J2000),
                 +15.380d {+15d 22' 50"} (current),
                 +15.733d {+15d 44' 00"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=1257 [image_cnts]
TRIGGER_DUR:     64.000 [sec] 
TRIGGER_INDEX:   20000     E_range: 15-50 keV
BKG_INTEN:       0 [cnts]
BKG_TIME:        0.00 SOD {00:00:00.00} UT
BKG_DUR:         0 [sec]
GRB_DATE:        17862 TJD;   109 DOY;   17/04/19
GRB_TIME:        27813.06 SOD {07:43:33.06} UT
GRB_PHI:          12.57 [deg]
GRB_THETA:        14.27 [deg]
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    7.16 [sigma]
MERIT_PARAMS:     +1  +0  +0  +6  +1  -3  +0  +0 +88  +0 
SUN_POSTN:        27.39d {+01h 49m 33s}  +11.28d {+11d 16' 38"}
SUN_DIST:        152.37 [deg]   Sun_angle= -11.5 [hr] (East of Sun)
MOON_POSTN:      299.75d {+19h 59m 00s}  -17.79d {-17d 47' 25"}
MOON_DIST:       103.62 [deg]
MOON_ILLUM:      51 [%]
GAL_COORDS:      333.49, 76.65 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      192.09, 22.02 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Coordinates.  
COMMENTS:        This is an image trigger.  (The RATE_SIGNIF & BKG_{INTEN, TIME, DUR} are undefined.)  
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 = 232.18,3.78 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 19 Apr 17 08:04:20 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     748858,   Seg_Num: 0
GRB_RA:          199.853d {+13h 19m 25s} (J2000),
                 200.066d {+13h 20m 16s} (current),
                 199.238d {+13h 16m 57s} (1950)
GRB_DEC:         +15.471d {+15d 28' 16"} (J2000),
                 +15.380d {+15d 22' 50"} (current),
                 +15.733d {+15d 44' 00"} (1950)
GRB_DATE:        17862 TJD;   109 DOY;   17/04/19
GRB_TIME:        27813.06 SOD {07:43:33.06} UT
TRIGGER_INDEX:   20000
GRB_PHI:          12.57 [deg]
GRB_THETA:        14.27 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     64.000 [sec] 
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    7.16 [sigma]
LC_URL:          sw00748858000msb.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

Plot creation:
Wed Apr 19 04:12:54 EDT 2017