batgrbproduct analysis for trigger=319963

batgrbproduct Analysis for Trigger=319963

Analysis Summary

Notes:

1) No attempt has been made to eliminate the non-significant decimal places.
2) This batgrbproduct analysis is done of the amount of data for this trigger downloaded to date.
3) This page will be updated for up to 8 downlinks after the trigger.

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.41
    Process Start Time (local time): Thu Aug 14 05:05:38 EDT 2008
             Host Name: gcn5
   Current Working Dir: /local/data/raid2/prebascript/trigger319963/GCN5_download_cron
======================================================================

  Trigger: 00319963      Segment: 000

  BAT Trigger Time: 240364160   [s; MET]
      Trigger Stop: 240364480   [s; MET]
               UTC: 2008-08-13T23:49:16.983280    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 264.825870972831   Dec: -30.3334182928792  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    9.15
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    9.15

  Flight Position:   [ source = BAT ]
    RA: 264.825870972831   Dec: -30.3334182928792  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 264.844218434444   Dec: -30.3031381023224  [deg; J2000]  
        { 17h 39m 22.6s , -30d 18' 11.3" }
         +/- 2.89468830001297 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.28260948341602 [arcmin] (formal 1-sigma fit error)
    SNR: 6.66326719819333
 
  Angular difference between Flight and Ground position is 2.050330 arcmin
 
  Partial Coding Fraction: 0.9609375    [ including projection effects ]

  Duration
     T90: 198.368000000715 +/- 411.01171353988
        Measured from: -59.527999997139
                   to: 138.840000003576     [s; relative to TRIGTIME]
     T50: 215.5 +/- 487.873617415579
        Measured from: -27.1999999880791
                   to: 188.300000011921     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -59.8280000090599     
                   to: -58.8280000090599     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -61.7520000040531     
                   to: 648.895999997854     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     2.214242   1.590306   0.197706   0.278548
           0.171685   0.151981   0.131603   0.120347 [error]
 Peak      0.012488   0.031813   0.007441   0.018951
           0.013302   0.011539   0.009912   0.009336 [error]

     [ fluence units of on-axis counts / fully illuminated detector ] 

======================================================================
 
=== Fluence/Peak Flux Summary ===
 
              Model    Band1    Band2    Band3    Band4    Band5    Total      
                       15-25    25-50   50-100  100-350   15-150   15-350   keV
Fluence   Power-law 6.62e-07 5.80e-07 3.49e-07 3.16e-07 1.73e-06 1.91e-06   erg/cm2
              Error 8.63e-08 7.55e-08 9.46e-08 1.58e-07 2.28e-07 3.11e-07   erg/cm2
Peak flux Power-law 1.89e-01 1.46e-01 7.57e-02 5.67e-02 4.36e-01 4.67e-01   ph/cm2/s
              Error 1.55e-01 1.17e-01 7.43e-02 1.12e-01 2.67e-01 2.87e-01   ph/cm2/s
 
Fluence   Cutoff-PL 6.22e-07 6.72e-07 1.75e-07 6.11e-09 1.47e-06 1.47e-06   erg/cm2
              Error 9.61e-08 9.96e-08 1.15e-07 3.15e-08 2.05e-07 2.07e-07   erg/cm2
Peak flux Cutoff-PL 1.48e-01 1.88e-01 6.77e-02 4.29e-03 4.08e-01 4.08e-01   ph/cm2/s
              Error 1.68e-01 1.22e-01 8.12e-02 9.28e-02 2.58e-01 2.56e-01   ph/cm2/s
 
Fluence        Band 6.22e-07 6.57e-07 1.97e-07 1.63e-08 1.50e-06 1.49e-06   erg/cm2
              Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
Peak flux      Band 1.51e-01 1.90e-01 6.98e-02 4.67e-03 4.11e-01 4.06e-01   ph/cm2/s
              Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   ph/cm2/s

 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.734    0.255    -      -           2.26e-04 4.51e-05   65.490 57
CPL   0.348    1.573      21.9    0.0      8.97e-03 0.00e+00   57.860 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.945    1.228    -      -           2.99e-03 2.56e-03   51.270 57
CPL  -0.390    1.067      41.5    0.0      6.82e-02 0.00e+00   50.500 56
 
Model      : spectral model: simple power-law (PL) and cutoff power-law (CPL)
Ph_index   : photon index: E^-{Ph_index} (minus sign is not included in the index)
Ph_90err   : 90% error of the photon index
Epeak      : Epeak in keV
Epeak_90err: 90% error of Epeak
Norm       : normalization at 50 keV in PL model and at 1 keV in CPL model
Nomr_90err : 90% error of the normalization
chi2       : Chi-Squared
dof        : degree of freedom

 
=== T90/T50 calculation in the 50-300 keV band (BATSE band) using 64 ms lc ===
 
T90 in the 50-300 keV band: 0.000000 sec.
T50 in the 50-300 keV band: 0.000000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  710.648  -61.752  648.896
T90   198.368  -59.528  138.840
T50   215.500  -27.200  188.300
Peak    1.000  -59.828  -58.828

Click here for the BAT GCN circular template

Image

Pre-slew 15-350 keV image (Event data; bkg subtracted)

#   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
  264.8442 -30.3031 0.0288   11.6   47.4       1.9840     6.7  TRIG_00319963       
------------------------------------------
 
Foreground time interval of the image:
 -4.699 338.001 (delta_t = 342.700 [sec])
Background time interval of the image:

Lightcurves

Notes:

1) All plots contain as much data as has been downloaded to date.
2) Multiple plots of different time binning/intervals are shown to cover all scenarios of short/long GRBs, rate/image triggers, and real/false positives.
3) For all the mask-weighted lightcurves, the y-axis units are counts/sec/det where a det is 0.4 x 0.4 = 0.16 sq cm.
4) 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.
5) 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 320.000000

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 320.000000

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 320.000000

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

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

Flight mask-tagged light curves

Caution: Mask-weight map is always using the same on-axis map

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

Spectra

Notes:

1) The fitting includes the systematic errors.
2) For long bursts, a spectral fit of the pre-slew DRM will introduce some errors in both a spectral shape and a normalization if the PHA file contains a lot of the slew/post-slew time interval.
3) For fits to more complicated models (e.g. a power-law over a cutoff power-law), the BAT team has decided to require a chi-square improvement of more than 6 for each extra dof.
4) For short bursts (T90<1sec), the specrtum is also fit with Blackbody, OTTB, and Double Blackbody.

Time averaged spectrum fit using the pre-slew DRM

Power-law model

Time interval is from  -61.752 sec. to  648.896 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.73418     ( -0.244221   0.266399 )
Norm@50keV  : 2.25582E-04    ( -4.46126e-05   4.55304e-05 )
------------------------------------------------------------
# Chi-Squared =          65.49 using 59 PHA bins.
# Reduced chi-squared =          1.149 for     57 degrees of freedom 
# Null hypothesis probability =   2.059175e-01
 
Photon flux (15-150 keV)    in 710.6 sec: 5.15072E-02 ( -0.00549347  0.00549349 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.72618e-06 ( -2.22926e-07  2.32446e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from  -61.752 sec. to  648.896 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.347811     ( -2.00221   1.14336 )
Epeak [keV] : 21.9086      (   )
Norm@50keV  : 8.96557E-03    (     )
------------------------------------------------------------
# Chi-Squared =          57.86 using 59 PHA bins.
# Reduced chi-squared =          1.033 for     56 degrees of freedom 
# Null hypothesis probability =   4.065145e-01
 
Photon flux (15-150 keV)    in 710.6 sec: 4.86140E-02 ( -0.0055631  0.0055987 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.47459e-06 ( -1.90171e-07  2.18865e-07 ) ergs/cm2

Band function

Time interval is from  -61.752 sec. to  648.896 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.102447   ( -1.11985   1.97321 )
beta        : -9.99902    ( 3251.42   3261.42 )
Epeak [keV] : 22.6619      ( -18.9397 4.74961 )
Norm@50keV   : 1.32149E-02    ( -0.0115302   0.190386 )
------------------------------------------------------------
# Chi-Squared =          57.91 using 59 PHA bins.
# Reduced chi-squared =          1.053 for     55 degrees of freedom 
# Null hypothesis probability =   3.683935e-01
 
Photon flux (15-150 keV)    in 710.6 sec: 5.165069E-02 ( -0.00553651  0.00550787 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.50178e-06 ( -2.59561e-07  2.43707e-07 ) ergs/cm2

Peak spectrum fit

Power-law model

Time interval is from  -59.828 sec. to  -58.828 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.94548     ( -1.05788   1.39836 )
Norm@50keV  : 2.98503E-03    ( -0.00298058   0.00213191 )
------------------------------------------------------------
# Chi-Squared =          51.27 using 59 PHA bins.
# Reduced chi-squared =         0.8995 for     57 degrees of freedom 
# Null hypothesis probability =   6.888461e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.436419 ( -0.266376  0.266901 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.74192e-08 ( -1.80663e-08  2.04894e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from  -59.828 sec. to  -58.828 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.390286     ( 0.441435   2.5745 )
Epeak [keV] : 41.4953      (   )
Norm@50keV  : 6.82455E-02    (     )
------------------------------------------------------------
# Chi-Squared =          50.50 using 59 PHA bins.
# Reduced chi-squared =         0.9018 for     56 degrees of freedom 
# Null hypothesis probability =   6.823286e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.407752 ( -0.247743  0.268696 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.30996e-08 ( 2.15544e-08  -2.30996e-08 ) ergs/cm2

Band function

Time interval is from  -59.828 sec. to  -58.828 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.391988   ( 1.0782   1.0782 )
beta        : -10.00000    ( 8.49485e+08   8.49485e+08 )
Epeak [keV] : 41.3832      ( -36.0471 -41.1282 )
Norm@50keV   : 6.87449E-02    ( -0.0930015   23.2 )
------------------------------------------------------------
# Chi-Squared =          50.50 using 59 PHA bins.
# Reduced chi-squared =         0.9182 for     55 degrees of freedom 
# Null hypothesis probability =   6.469744e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.411271 ( -0.238009  0.2691 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.35603e-08 ( -1.41998e-08  2.19284e-08 ) ergs/cm2

Pre-slew spectrum (Pre-slew PHA with pre-slew DRM)

Power-law model

 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.92823     ( -0.349478   0.40324 )
Norm@50keV  : 1.79129E-04    ( -5.54243e-05   5.90531e-05 )
------------------------------------------------------------
# Chi-Squared =          73.69 using 59 PHA bins.
# Reduced chi-squared =          1.293 for     57 degrees of freedom 
# Null hypothesis probability =   6.771460e-02
 
Photon flux (15-150 keV)    in 342.7 sec: 4.67790E-02 ( -0.00726102  0.00727101 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.14248e-07 ( -1.35593e-07  1.4466e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.00625E-02     ( 0.0320372   1.94167 )
Epeak [keV] : 20.3503      ( -18.0395 5.93734 )
Norm@50keV  : 1.99460E-02    (     )
------------------------------------------------------------
# Chi-Squared =          66.55 using 59 PHA bins.
# Reduced chi-squared =          1.188 for     56 degrees of freedom 
# Null hypothesis probability =   1.579854e-01
 
Photon flux (15-150 keV)    in 342.7 sec: 4.51856E-02 ( -0.0071196  0.0071257 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.19427e-07 ( -5.75839e-08  1.23362e-07 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.384601   ( -2.01763   3.72339 )
beta        : -9.99972    ( 11367.5   11377.5 )
Epeak [keV] : 21.0922      ( -18.0348 5.06103 )
Norm@50keV   : 3.76291E-02    ( -0.0438589   36.3289 )
------------------------------------------------------------
# Chi-Squared =          66.48 using 59 PHA bins.
# Reduced chi-squared =          1.209 for     55 degrees of freedom 
# Null hypothesis probability =   1.380081e-01
 
Photon flux (15-150 keV)    in 342.7 sec: 4.533446E-02 ( -0.00706877  0.00673317 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.19519e-07 ( -1.12416e-07  7.43488e-08 ) ergs/cm2

S(25-50 keV) vs. S(50-100 keV) plot

S(25-50 keV)  = 5.80154e-07
S(50-100 keV) = 3.48765e-07

T90 vs. Hardness ratio plot

T90                                   = 198.368000000715 sec.
Hardness ratio (energy fluence ratio) = 0.601159

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 0.718217
Count Ratio (50-100 keV) / (15-25 keV) = 0.0892883

Mask shadow pattern

IMX = 0, IMY = 0

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 320.000000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 320.000000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 320.000000

Spacecraft aspect plot

Bright source in the pre-burst/pre-slew/post-slew images

Pre-burst image of 15-350 keV band

Time interval of the image:

Pre-slew background subtracted image of 15-350 keV band

Time interval of the image:
-4.699400 338.000600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
186.5992 -62.8006    3.9  46.4 -130.8   3.4009   3.0    2.4	GX 301-2                      
244.9814 -15.6402    0.3  26.7  -14.3  11.3160  38.8    0.1	Sco X-1                       
255.9806 -37.9509    3.5   2.4  -11.0   0.9906   3.4    6.4	4U 1700-377                   
256.3789 -36.3355    2.5   3.9    2.9   1.2473   4.7    5.9	GX 349+2                      
263.1866 -24.7749    6.2  16.2   32.6   0.5341   1.9    9.8	GX 1+4                        
264.8587 -44.4470   14.8   7.1  142.5   0.2069   0.8    5.0	4U 1735-44                    
268.3558  -1.4460    2.6  40.0   30.2   2.3396   4.4    0.8	SW J1753.5-0127               
270.3970 -25.0868    2.9  18.7   52.9   1.2733   4.0    6.1	GX 5-1                        
270.1308 -25.7519    4.0  18.0   53.5   0.8941   2.9    9.3	GRS 1758-258                  
274.0020 -14.0495    2.5  30.0   46.9   1.8738   4.5    0.8	GX 17+2                       
276.0322 -30.3221    3.6  18.2   75.9   1.0723   3.2    6.2	H1820-303                     
285.0168 -24.8751    2.4  27.8   77.9   1.9970   4.7    2.9	HT1900.1-2455                 
277.3438 -23.7991    1.8  23.5   64.8   2.2309   6.4 ------	UNKNOWN                       
257.7270  12.0633    2.9  52.2   13.3   4.1138   4.0 ------	UNKNOWN                       
312.7129 -70.7004    3.2  41.3  168.3   1.9172   3.7 ------	UNKNOWN                       
264.8442 -30.3031    1.7  11.6   47.4   1.9836   6.7 ------	UNKNOWN                       
274.2198 -55.3965    2.5  19.0  161.9   1.3712   4.7 ------	UNKNOWN                       
250.2133  10.8611    2.1  51.4    3.9   4.0727   5.4 ------	UNKNOWN                       
  1.3068 -77.0349    3.6  54.1  177.1   3.4912   3.2 ------	UNKNOWN                       
255.2363 -41.6878    2.4   2.1 -124.3   1.4312   4.8 ------	UNKNOWN                       
242.1414 -11.8691    2.5  31.2  -16.7   1.4299   4.6 ------	UNKNOWN                       
	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
378.300600 758.200000
759.000000 963.074500
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
244.9846 -15.6350    0.3  23.4  -52.7  19.2117  36.2    0.4	Sco X-1                       
256.0052 -37.8280    1.6  10.5 -135.4   3.1003   7.1    1.3	4U 1700-377                   
256.4630 -36.3126    2.8   9.2 -130.1   1.6904   4.2    6.8	GX 349+2                      
263.1122 -24.7487    9.7   5.8  -12.9   0.5332   1.2    5.6	GX 1+4                        
264.7334 -44.4580    3.9  14.1 -176.9   1.2806   3.0    0.6	4U 1735-44                    
268.4209  -1.3670    3.4  29.2   10.2   1.5617   3.3    6.0	SW J1753.5-0127               
270.2706 -25.1218    2.4   7.1   46.9   2.1151   4.8    2.7	GX 5-1                        
270.2783 -25.7384    3.7   6.6   50.5   1.4746   3.4    1.3	GRS 1758-258                  
274.0156 -14.0148    1.1  18.4   32.2   4.5784  10.2    1.4	GX 17+2                       
275.9098 -30.3526    2.1   9.6   95.8   2.2550   5.4    1.2	H1820-303                     
285.0485 -24.9191    3.8  18.7   80.9   1.6481   3.0    0.7	HT1900.1-2455                 
288.7701  10.9579    3.3  47.3   35.6   6.2631   3.5    1.8	GRS 1915+105                  
315.7725 -48.8398    2.7  42.4  133.5   6.2085   4.2 ------	UNKNOWN                       
305.5006 -43.6719    2.8  34.7  126.9   3.5901   4.1 ------	UNKNOWN                       
277.3296 -23.7986    2.1  12.9   65.4   2.2610   5.5 ------	UNKNOWN                       
264.8051 -30.3524    1.2   0.0 -143.6   4.7404   9.4 ------	UNKNOWN                       
261.9930 -51.3691    2.7  21.2 -172.3   1.7573   4.2 ------	UNKNOWN                       
199.9383 -83.8916    2.6  57.3 -170.6   9.2305   4.4 ------	UNKNOWN                       
244.9683 -16.9691    2.4  22.5  -55.3   2.4720   4.8 ------	UNKNOWN                       
233.5609  15.9306    3.6  55.2  -34.7   8.2440   3.2 ------	UNKNOWN                       
229.7220   7.4969    4.2  50.6  -44.7   7.0668   2.8 ------	UNKNOWN                       
	UNKNOWN

Plot creation:
Wed Feb 17 13:15:13 EST 2010