TDRSS lightcurve for Trigger=638808

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 23 Apr 15 06:28:24 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     638808,   Seg_Num: 0
GRB_RA:          221.600d {+14h 46m 24s} (J2000),
                 221.784d {+14h 47m 08s} (current),
                 221.000d {+14h 44m 00s} (1950)
GRB_DEC:         +12.288d {+12d 17' 18"} (J2000),
                 +12.225d {+12d 13' 29"} (current),
                 +12.497d {+12d 29' 51"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       1480 [cnts]    Image_Peak=148 [image_cnts]
TRIGGER_DUR:     0.256 [sec] 
TRIGGER_INDEX:   126     E_range: 50-350 keV
BKG_INTEN:       16328 [cnts]
BKG_TIME:        23274.51 SOD {06:27:54.51} UT
BKG_DUR:         8 [sec]
GRB_DATE:        17135 TJD;   113 DOY;   15/04/23
GRB_TIME:        23284.69 SOD {06:28:04.69} UT
GRB_PHI:          57.60 [deg]
GRB_THETA:        12.32 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     41.24 [sigma]
IMAGE_SIGNIF:    10.41 [sigma]
MERIT_PARAMS:     +1  +0  +0  -2  +3  +0  +0  +0 +89  +0 
SUN_POSTN:        30.59d {+02h 02m 23s}  +12.44d {+12d 26' 32"}
SUN_DIST:        152.95 [deg]   Sun_angle= 11.3 [hr] (West of Sun)
MOON_POSTN:       91.34d {+06h 05m 21s}  +18.24d {+18d 14' 22"}
MOON_DIST:       122.41 [deg]
MOON_ILLUM:      24 [%]
GAL_COORDS:        9.75, 59.26 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      214.94, 26.96 [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 = 287.46,5.11 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 23 Apr 15 06:44:58 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     638808,   Seg_Num: 0
GRB_RA:          221.600d {+14h 46m 24s} (J2000),
                 221.784d {+14h 47m 08s} (current),
                 221.000d {+14h 44m 00s} (1950)
GRB_DEC:         +12.288d {+12d 17' 18"} (J2000),
                 +12.225d {+12d 13' 29"} (current),
                 +12.497d {+12d 29' 51"} (1950)
GRB_DATE:        17135 TJD;   113 DOY;   15/04/23
GRB_TIME:        23284.69 SOD {06:28:04.69} UT
TRIGGER_INDEX:   126
GRB_PHI:          57.60 [deg]
GRB_THETA:        12.32 [deg]
DELTA_TIME:      -57.00 [sec]
TRIGGER_DUR:     0.256 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     41.24 [sigma]
IMAGE_SIGNIF:    10.41 [sigma]
LC_URL:          sw00638808000msb.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:
Thu Apr 23 02:45:02 EDT 2015