TDRSS lightcurve for Trigger=638589

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 20 Apr 15 17:08:33 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     638589,   Seg_Num: 0
GRB_RA:           87.815d {+05h 51m 16s} (J2000),
                  87.996d {+05h 51m 59s} (current),
                  87.226d {+05h 48m 54s} (1950)
GRB_DEC:         -10.422d {-10d 25' 20"} (J2000),
                 -10.419d {-10d 25' 08"} (current),
                 -10.434d {-10d 26' 03"} (1950)
GRB_ERROR:       4.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=12823 [image_cnts]
TRIGGER_DUR:     344.000 [sec]   (=5.7 [min])
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:        17132 TJD;   110 DOY;   15/04/20
GRB_TIME:        61210.52 SOD {17:00:10.52} UT
GRB_PHI:          68.99 [deg]
GRB_THETA:        16.39 [deg]
SOLN_STATUS:     0x1099D
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    5.81 [sigma]
MERIT_PARAMS:     +0  +0 +125  +6  +1  -5  +0  +0 -44  +1 
SUN_POSTN:        28.20d {+01h 52m 49s}  +11.58d {+11d 34' 41"}
SUN_DIST:         63.35 [deg]   Sun_angle= -4.0 [hr] (East of Sun)
MOON_POSTN:       55.05d {+03h 40m 12s}  +15.66d {+15d 39' 28"}
MOON_DIST:        41.76 [deg]
MOON_ILLUM:      5 [%]
GAL_COORDS:      215.62,-18.04 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       87.41,-33.84 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Coordinates.  
COMMENTS:        This Notice was delayed by more than 60 sec past the end of the trigger integration interval;  
COMMENTS:        probably due to it occurring during a Malindi downlink session.  
COMMENTS:        This is an image trigger.  (The RATE_SIGNIF & BKG_{INTEN, TIME, DUR} are undefined.)  
COMMENTS:        A point_source was found.  
COMMENTS:        This is a low-flux event whose position matches one of the nearby galaxy sources in the on-board catalog!  
COMMENTS:        This matches a source in the on-board catalog: Num=12172=A0549-1015,   delta=0.182 [deg].  
COMMENTS:        This matches a source in the ground catalog: A0549-1015,   delta=0.182 [deg].  
COMMENTS:        This is a GRB in nearby galaxy or it is noise.  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 20 Apr 15 17:22:26 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     638589,   Seg_Num: 0
GRB_RA:           87.815d {+05h 51m 16s} (J2000),
                  87.996d {+05h 51m 59s} (current),
                  87.226d {+05h 48m 54s} (1950)
GRB_DEC:         -10.422d {-10d 25' 20"} (J2000),
                 -10.419d {-10d 25' 08"} (current),
                 -10.434d {-10d 26' 03"} (1950)
GRB_DATE:        17132 TJD;   110 DOY;   15/04/20
GRB_TIME:        61210.52 SOD {17:00:10.52} UT
TRIGGER_INDEX:   20000
GRB_PHI:          68.99 [deg]
GRB_THETA:        16.39 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     344.000 [sec]   (=5.7 [min])
SOLN_STATUS:     0x99D
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    5.81 [sigma]
LC_URL:          sw00638589000msb.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

Extended TDRSS lc No.5

Plot creation:
Mon Apr 20 13:23:02 EDT 2015