TDRSS lightcurve for Trigger=754549

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 26 May 17 13:36:15 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     754549,   Seg_Num: 0
GRB_RA:            4.708d {+00h 18m 50s} (J2000),
                   4.931d {+00h 19m 43s} (current),
                   4.067d {+00h 16m 16s} (1950)
GRB_DEC:          +1.240d {+01d 14' 22"} (J2000),
                  +1.336d {+01d 20' 10"} (current),
                  +0.962d {+00d 57' 43"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       14422 [cnts]    Image_Peak=314 [image_cnts]
TRIGGER_DUR:     5.504 [sec] 
TRIGGER_INDEX:   476     E_range: 25-100 keV
BKG_INTEN:       115592 [cnts]
BKG_TIME:        48836.88 SOD {13:33:56.88} UT
BKG_DUR:         48 [sec]
GRB_DATE:        17899 TJD;   146 DOY;   17/05/26
GRB_TIME:        48908.94 SOD {13:35:08.94} UT
GRB_PHI:         158.22 [deg]
GRB_THETA:        18.21 [deg]
SOLN_STATUS:     0x83
RATE_SIGNIF:     8.88 [sigma]
IMAGE_SIGNIF:    6.86 [sigma]
MERIT_PARAMS:     +1  +0  +0  +2  +2  -3  +0  +0 -49  +0 
SUN_POSTN:        63.59d {+04h 14m 20s}  +21.22d {+21d 13' 04"}
SUN_DIST:         60.45 [deg]   Sun_angle= 3.9 [hr] (West of Sun)
MOON_POSTN:       75.55d {+05h 02m 12s}  +18.02d {+18d 01' 07"}
MOON_DIST:        71.17 [deg]
MOON_ILLUM:      1 [%]
GAL_COORDS:      106.17,-60.57 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:        4.81, -0.73 [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:        Since the IMAGE_SIGNIF is less than 7 sigma, this is a questionable detection.  
COMMENTS:        This trigger occurred at longitude,latitude = 333.48,14.51 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 26 May 17 13:52:32 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     754549,   Seg_Num: 0
GRB_RA:            4.708d {+00h 18m 50s} (J2000),
                   4.931d {+00h 19m 43s} (current),
                   4.067d {+00h 16m 16s} (1950)
GRB_DEC:          +1.240d {+01d 14' 22"} (J2000),
                  +1.336d {+01d 20' 10"} (current),
                  +0.962d {+00d 57' 43"} (1950)
GRB_DATE:        17899 TJD;   146 DOY;   17/05/26
GRB_TIME:        48908.94 SOD {13:35:08.94} UT
TRIGGER_INDEX:   476
GRB_PHI:         158.22 [deg]
GRB_THETA:        18.21 [deg]
DELTA_TIME:      -5.00 [sec]
TRIGGER_DUR:     5.504 [sec] 
SOLN_STATUS:     0x83
RATE_SIGNIF:     8.88 [sigma]
IMAGE_SIGNIF:    6.86 [sigma]
LC_URL:          sw00754549000msb.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:
Fri May 26 09:52:57 EDT 2017