TDRSS lightcurve for Trigger=831888

Notes:

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

GCN BAT Position Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 11 May 18 07:28:00 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     831888,   Seg_Num: 0
GRB_RA:          214.508d {+14h 18m 02s} (J2000),
                 214.855d {+14h 19m 25s} (current),
                 213.570d {+14h 14m 17s} (1950)
GRB_DEC:         -62.457d {-62d 27' 24"} (J2000),
                 -62.541d {-62d 32' 27"} (current),
                 -62.226d {-62d 13' 34"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=5746 [image_cnts]
TRIGGER_DUR:     624.000 [sec]   (=10.4 [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:        18249 TJD;   131 DOY;   18/05/11
GRB_TIME:        26139.07 SOD {07:15:39.07} UT
GRB_PHI:         169.63 [deg]
GRB_THETA:        41.76 [deg]
SOLN_STATUS:     0x1D
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    11.22 [sigma]
MERIT_PARAMS:     +0  +0 +124  +7  +1  +1  +0  +1 +70  +0 
SUN_POSTN:        48.14d {+03h 12m 32s}  +17.89d {+17d 53' 31"}
SUN_DIST:        134.40 [deg]   Sun_angle= -11.1 [hr] (East of Sun)
MOON_POSTN:      358.81d {+23h 55m 14s}   -4.56d {-04d 33' 43"}
MOON_DIST:       107.52 [deg]
MOON_ILLUM:      20 [%]
GAL_COORDS:      312.76, -1.25 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      237.28,-45.18 [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 matches a source in the on-board catalog: Num=14105=(null) (probably an AT_Slot).  
COMMENTS:        This does not match any source in the ground catalog.  
COMMENTS:        This is not a GRB.  
COMMENTS:        This is an interesting source.  

GCN BAT Lightcurve Notice

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 11 May 18 07:40:48 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     831888,   Seg_Num: 0
GRB_RA:          214.508d {+14h 18m 02s} (J2000),
                 214.855d {+14h 19m 25s} (current),
                 213.570d {+14h 14m 17s} (1950)
GRB_DEC:         -62.457d {-62d 27' 24"} (J2000),
                 -62.541d {-62d 32' 27"} (current),
                 -62.226d {-62d 13' 34"} (1950)
GRB_DATE:        18249 TJD;   131 DOY;   18/05/11
GRB_TIME:        26139.07 SOD {07:15:39.07} UT
TRIGGER_INDEX:   20000
GRB_PHI:         169.63 [deg]
GRB_THETA:        41.76 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     624.000 [sec]   (=10.4 [min])
SOLN_STATUS:     0x1D
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    11.22 [sigma]
LC_URL:          sw00831888000msb.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:
Fri May 11 03:41:03 EDT 2018