TDRSS lightcurve for Trigger=311658

Notes:

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 15 May 08 06:01:47 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     311658,   Seg_Num: 0
GRB_RA:            3.150d {+00h 12m 36s} (J2000),
                   3.259d {+00h 13m 02s} (current),
                   2.501d {+00h 10m 00s} (1950)
GRB_DEC:         +32.599d {+32d 35' 57"} (J2000),
                 +32.646d {+32d 38' 45"} (current),
                 +32.321d {+32d 19' 16"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       15450 [cnts]    Image_Peak=180 [image_cnts]
TRIGGER_DUR:     2.048 [sec] 
TRIGGER_INDEX:   264     E_range: 15-50 keV
BKG_INTEN:       183435 [cnts]
BKG_TIME:        21637.20 SOD {06:00:37.20} UT
BKG_DUR:         24 [sec]
GRB_DATE:        14601 TJD;   136 DOY;   08/05/15
GRB_TIME:        21673.81 SOD {06:01:13.81} UT
GRB_PHI:         -69.87 [deg]
GRB_THETA:        41.61 [deg]
SOLN_STATUS:     0x203
RATE_SIGNIF:     8.42 [sigma]
IMAGE_SIGNIF:    7.05 [sigma]
MERIT_PARAMS:     +1  +0  +0  +1  +1  +0 -100  +0 -69  +1 
SUN_POSTN:        52.42d {+03h 29m 42s}  +18.96d {+18d 57' 44"}
SUN_DIST:         45.89 [deg]   Sun_angle= 3.3 [hr] (West of Sun)
MOON_POSTN:      179.78d {+11h 59m 08s}   -3.26d {-03d 15' 53"}
MOON_DIST:       150.44 [deg]
MOON_ILLUM:      80 [%]
GAL_COORDS:      113.53,-29.56 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       16.98, 28.42 [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 foreground interval count rate is less than the bkg interval (SAA exit), this is a questionable detection.  
COMMENTS:        This trigger occurred at longitude,latitude = 15.39,-19.93 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 15 May 08 06:06:34 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     311658,   Seg_Num: 0
GRB_RA:            3.150d {+00h 12m 36s} (J2000),
                   3.259d {+00h 13m 02s} (current),
                   2.501d {+00h 10m 00s} (1950)
GRB_DEC:         +32.599d {+32d 35' 57"} (J2000),
                 +32.646d {+32d 38' 45"} (current),
                 +32.321d {+32d 19' 16"} (1950)
GRB_DATE:        14601 TJD;   136 DOY;   08/05/15
GRB_TIME:        21673.81 SOD {06:01:13.81} UT
TRIGGER_INDEX:   264
GRB_PHI:         -69.87 [deg]
GRB_THETA:        41.61 [deg]
DELTA_TIME:      320.00 [sec]
TRIGGER_DUR:     2.048 [sec] 
SOLN_STATUS:     0x203
RATE_SIGNIF:     8.42 [sigma]
IMAGE_SIGNIF:    7.05 [sigma]
LC_URL:          sw00311658000msb.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:
Thu May 15 02:07:13 EDT 2008