TDRSS lightcurve for Trigger=554620

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 27 Apr 13 07:49:14 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     554620,   Seg_Num: 0
GRB_RA:          173.139d {+11h 32m 33s} (J2000),
                 173.314d {+11h 33m 15s} (current),
                 172.480d {+11h 29m 55s} (1950)
GRB_DEC:         +27.692d {+27d 41' 29"} (J2000),
                 +27.618d {+27d 37' 04"} (current),
                 +27.968d {+27d 58' 04"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=7320 [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:        16409 TJD;   117 DOY;   13/04/27
GRB_TIME:        28077.51 SOD {07:47:57.51} UT
GRB_PHI:         -76.18 [deg]
GRB_THETA:        39.09 [deg]
SOLN_STATUS:     0x20000013
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    23.81 [sigma]
MERIT_PARAMS:     +1  +0  +0  +6  +1  +8  +0  +0 +53  +0 
SUN_POSTN:        34.87d {+02h 19m 30s}  +13.92d {+13d 55' 16"}
SUN_DIST:        122.14 [deg]   Sun_angle= -9.2 [hr] (East of Sun)
MOON_POSTN:      235.69d {+15h 42m 45s}  -18.77d {-18d 46' 27"}
MOON_DIST:        76.12 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      206.53, 72.50 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      162.22, 22.60 [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 = 162.17,-20.22 [deg].  
COMMENTS:           
COMMENTS:        NOTE: This BAT event is temporally(51.0<100sec) coincident with the FERMI_GBM event (trignum=388741629).  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 27 Apr 13 08:05:03 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     554620,   Seg_Num: 0
GRB_RA:          173.139d {+11h 32m 33s} (J2000),
                 173.314d {+11h 33m 15s} (current),
                 172.480d {+11h 29m 55s} (1950)
GRB_DEC:         +27.692d {+27d 41' 29"} (J2000),
                 +27.618d {+27d 37' 04"} (current),
                 +27.968d {+27d 58' 04"} (1950)
GRB_DATE:        16409 TJD;   117 DOY;   13/04/27
GRB_TIME:        28077.51 SOD {07:47:57.51} UT
TRIGGER_INDEX:   20000
GRB_PHI:         -76.18 [deg]
GRB_THETA:        39.09 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     64.000 [sec] 
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    23.81 [sigma]
LC_URL:          sw00554620000msb.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

Extended TDRSS lc No.4

Plot creation:
Sat Apr 27 04:05:23 EDT 2013