TDRSS lightcurve for Trigger=661253

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 23 Oct 15 13:43:30 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     661253,   Seg_Num: 0
GRB_RA:          271.019d {+18h 04m 05s} (J2000),
                 271.235d {+18h 04m 56s} (current),
                 270.338d {+18h 01m 21s} (1950)
GRB_DEC:          -8.323d {-08d 19' 21"} (J2000),
                  -8.321d {-08d 19' 15"} (current),
                  -8.326d {-08d 19' 33"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       6165 [cnts]    Image_Peak=260 [image_cnts]
TRIGGER_DUR:     1.024 [sec] 
TRIGGER_INDEX:   137     E_range: 15-50 keV
BKG_INTEN:       38423 [cnts]
BKG_TIME:        49368.68 SOD {13:42:48.68} UT
BKG_DUR:         8 [sec]
GRB_DATE:        17318 TJD;   296 DOY;   15/10/23
GRB_TIME:        49384.81 SOD {13:43:04.81} UT
GRB_PHI:         133.11 [deg]
GRB_THETA:        18.04 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     16.73 [sigma]
IMAGE_SIGNIF:    8.49 [sigma]
MERIT_PARAMS:     +1  +0  +0  +0  +1  -1  +0  +1 -46  +0 
SUN_POSTN:       207.75d {+13h 51m 00s}  -11.41d {-11d 24' 39"}
SUN_DIST:         62.51 [deg]   Sun_angle= -4.2 [hr] (East of Sun)
MOON_POSTN:      336.18d {+22h 24m 44s}   -7.66d {-07d 39' 21"}
MOON_DIST:        64.25 [deg]
MOON_ILLUM:      79 [%]
GAL_COORDS:       20.05,  6.59 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      271.04, 15.11 [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 = 338.31,-4.34 [deg].  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 23 Oct 15 14:02:04 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     661253,   Seg_Num: 0
GRB_RA:          271.019d {+18h 04m 05s} (J2000),
                 271.235d {+18h 04m 56s} (current),
                 270.338d {+18h 01m 21s} (1950)
GRB_DEC:          -8.323d {-08d 19' 21"} (J2000),
                  -8.321d {-08d 19' 15"} (current),
                  -8.326d {-08d 19' 33"} (1950)
GRB_DATE:        17318 TJD;   296 DOY;   15/10/23
GRB_TIME:        49384.81 SOD {13:43:04.81} UT
TRIGGER_INDEX:   137
GRB_PHI:         133.11 [deg]
GRB_THETA:        18.04 [deg]
DELTA_TIME:      -11.00 [sec]
TRIGGER_DUR:     1.024 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     16.73 [sigma]
IMAGE_SIGNIF:    8.49 [sigma]
LC_URL:          sw00661253000msb.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:
Fri Oct 23 10:02:42 EDT 2015