batgrbproduct analysis for trigger=515277

Analysis for Trigger 515277

Analysis Summary

Notes:

1) No attempt has been made to eliminate the non-significant decimal places.
2) This is a special analysis for ground-detected GRB. The event data duration is likely to be shorter than the burst duration. In such cases, the burst durations are found using the quad-rate data, and spectral analyses are only available for event data range.
3) Some mask-weighted light curve plots might be missing because the time range is not completely covered by the event data range.

Special note: This burst was outside the BAT calibrated field of view (the FLUX mask region) in the whole event data range (see figure below), hence spectral analysis is not available, and the rest of the analyses use the DETECTION mask.

FLUX-mask-weighted light curve (pcodethresh=0.05; aperture=CALDB:FLUX)

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time: Thu Dec 17 16:58:28 EST 2015
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger515277
======================================================================

  Trigger: 00515277      Segment: 000

  BAT Trigger Time: 351218970.048   [s; MET]
      Trigger Stop: 351218978.24   [s; MET]
               UTC: 2012-02-18T00:49:22.145800    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 319.757959799859   Dec: -25.4504975119872  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.67
     Image Trigger?:     NO
     Rate S/N Ratio:     27.0370116691915  [ if not an image trigger ]
     Image S/N Ratio:    9.67

  Analysis Position:   [ source = BAT ]
    RA: 319.757959799859   Dec: -25.4504975119872  [deg; J2000]

  Refined Position:   [ source = BAT pre-slew burst ]
    RA: 319.766883892088   Dec: -25.4625644609474  [deg; J2000]  
        { 21h 19m 04.1s , -25d 27' 45.2" }
         +/- 1.51578464101334 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.614677434546317 [arcmin] (formal 1-sigma fit error)
    SNR: 16.7905454804452



  Partial Coding Fraction: 0.04638672    [ including projection effects ]

  Duration
     T90: 31.3759999871254 +/- 2.29722614249124
        Measured from: -24.3279999494553
                   to: 7.04800003767014     [s; relative to TRIGTIME]
     T50: 18.6240000724792 +/- 3.45523143398606
        Measured from: -15.5920000076294
                   to: 3.03200006484985     [s; relative to TRIGTIME]


======================================================================

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   35.008  -26.696    8.312
T90    31.376  -24.328    7.048
T50    18.624  -15.592    3.032
Peak    1.000    2.332    3.332

Click here for the BAT GCN circular template

Special notes of this burst

Image

Pre-slew 15.0-350.0 keV image (Event data with DETECTION mask)

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
  319.7669   -25.4626   0.0114    48.6202   -54.0292         9.6681733     16.791 TRIG_00515277                 
 
Foreground time interval of the image:
-26.696   8.312 (delta_t =  35.008 [sec])
Background time interval of the image:
-239.048 -26.696 (delta_t = 212.352 [sec])

Lightcurves

Notes:

1) The mask-weighted lightcurves have units of either count/det or counts/sec/det, where a det is 0.4 x 0.4 = 0.16 sq cm.
2) The verticle lines correspond to following: green dotted lines are T50 interval, black dotted lines are T90 interval, blue solid line(s) is a spacecraft slew start time, and orange solid line(s) is a spacecraft slew end time.
3) For lightcurves in unit of count rate, time of each bin is in the middle of the bin.

1 s binning

From T0-310 s to T0+310 s

From T100_start - 20 s to T100_end + 30 s

Full time interval

64 ms binning

Full time interval

From T100_start to T100_end

From T0-5 sec to T0+5 sec

16 ms binning

From T100_start-5 s to T100_start+5 s

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 8.192000

8 ms binning

From T100_start-3 s to T100_start+3 s

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 8.192000

2 ms binning

From T100_start-1 s to T100_start+1 s

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 8.192000

SN=5 or 10 sec. binning (whichever binning is satisfied first)

SN=5 or 10 sec. binning (T < 200 sec)

Quad-rate summed light curves (from T0-300s to T0+1000s)

Mask shadow pattern (with DETECTION mask)

IMX = 6.667169370131198E-01, IMY = 9.186420166486740E-01

TIME vs. PHA plot around the beginning of event data (event_start to event_start+0.64s) with DETECTION mask

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 8.192000

TIME vs. DetID plot around the beginning of event data (event_start to event_start+0.64s) with DETECTION mask

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 8.192000

100 us light curve (15-350 keV; (event_start to event_start+0.64s)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 8.192000

Spacecraft aspect plot

Bright source in the event data image

Event data image of 15-350 keV band

Time interval of the image:
-26.696000 8.312000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.3870  35.2171    3.3  38.8  111.8   0.5350   3.4    8.3	Her X-1                       
262.9374 -24.8769    7.1  47.2   16.9   0.1999   1.6    8.8	GX 1+4                        
268.3506  -1.2949   10.7  26.7   39.0  -0.0734  -1.1    9.5	SW J1753.5-0127               
270.3708 -25.1984   12.5  43.8    8.8   0.0923   0.9    8.6	GX 5-1                        
270.2392 -25.5576    0.0  44.1    8.7   0.3468   3.4   11.6	GRS 1758-258                  
273.8506 -14.0996    7.2  32.5   13.1  -0.1218  -1.6    9.8	GX 17+2                       
275.8392 -30.2699   11.5  46.4   -0.4  -0.1124  -1.0    7.3	H1820-303                     
285.1795 -24.8148    3.4  39.1  -10.3  -0.3071  -3.4   10.1	HT1900.1-2455                 
288.8339  10.7771    7.0   3.5    9.5   0.1011   1.6   10.3	GRS 1915+105                  
299.5939  35.2716    8.9  22.9 -178.6  -0.0851  -1.3    4.2	Cyg X-1                       
307.9873  40.9216    7.6  31.0 -171.8  -0.1091  -1.5    5.9	Cyg X-3                       
326.1361  38.5329    0.0  39.9 -152.7   0.1062   1.1   12.8	Cyg X-2                       
262.8512 -33.9066    6.8  54.6   10.2   0.4228   1.7    8.1	GX 354-0                      
247.2614 -18.8568    2.8  53.7   35.5   2.5573   4.2 ------	UNKNOWN                       
331.0758  47.1537    2.3  47.3 -161.0   0.5703   5.0 ------	UNKNOWN                       
319.7668 -25.4626    0.7  48.6  -54.0   9.6695  16.5 ------	UNKNOWN

Webpage updated on:
Thu Dec 17 17:13:27 EST 2015