batgrbproduct analysis for trigger=334112

batgrbproduct Analysis for Trigger=334112

Analysis Summary

Notes:

1) No attempt has been made to eliminate the non-significant decimal places.
2) This batgrbproduct analysis is done using the HEASARC data.
3) This batgrbproduct analysis is using the flight position for the mask-weighting calculation.

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sun Jan 19 20:49:01 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger334112
======================================================================

  Trigger: 00334112      Segment: 000

  BAT Trigger Time: 247906929.856   [s; MET]
      Trigger Stop: 247906930.88   [s; MET]
               UTC: 2008-11-09T07:02:06.614940    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 330.787413462989   Dec: -54.7186309698602  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.1
     Image Trigger?:     NO
     Rate S/N Ratio:     14.9331845230681  [ if not an image trigger ]
     Image S/N Ratio:    9.1

  Flight Position:   [ source = BAT ]
    RA: 330.787413462989   Dec: -54.7186309698602  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 330.800308250584   Dec: -54.7084162680192  [deg; J2000]  
        { 22h 03m 12.1s , -54d 42' 30.3" }
         +/- 0.94305321883769 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.362762483415238 [arcmin] (formal 1-sigma fit error)
    SNR: 33.0746482871109
 
  Angular difference between Flight and Ground position is 0.758533 arcmin
 
  Partial Coding Fraction: 0.734375    [ including projection effects ]

  Duration
     T90: 221.487999975681 +/- 58.9712879330521
        Measured from: -36.2560000121593
                   to: 185.231999963522     [s; relative to TRIGTIME]
     T50: 34.9599999785423 +/- 5.8716729948983
        Measured from: -1.84000000357628
                   to: 33.119999974966     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 7.55599999427795     
                   to: 8.55599999427795     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -80.7520000040531     
                   to: 299.775999993086     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.989267   2.584879   1.767380   0.367549
           0.092707   0.096623   0.085504   0.074660 [error]
 Peak      0.048180   0.068829   0.043649   0.011802
           0.006192   0.006598   0.005813   0.004640 [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 6.05e-07 1.04e-06 1.37e-06 3.64e-06 4.00e-06 6.65e-06   erg/cm2
              Error 4.85e-08 4.90e-08 8.52e-08 4.98e-07 2.01e-07 5.58e-07   erg/cm2
Peak flux Power-law 5.14e-01 4.74e-01 3.03e-01 2.97e-01 1.41e+00 1.59e+00   ph/cm2/s
              Error 8.91e-02 5.29e-02 4.76e-02 9.22e-02 1.56e-01 1.79e-01   ph/cm2/s
 
Fluence   Cutoff-PL 5.89e-07 1.06e-06 1.38e-06 2.81e-06 3.94e-06 5.83e-06   erg/cm2
              Error 5.82e-08 5.78e-08 8.88e-08 -------- 2.34e-07 1.24e-06   erg/cm2
Peak flux Cutoff-PL 5.01e-01 4.86e-01 3.06e-01 2.26e-01 1.40e+00 1.52e+00   ph/cm2/s
              Error 1.00e-01 6.67e-02 5.02e-02 -------- 1.60e-01 2.31e-01   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band -------- -------- -------- -------- -------- --------   ph/cm2/s
              Error -------- -------- -------- -------- -------- --------   ph/cm2/s

 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.608    0.085    -      -           1.13e-03 5.23e-05   71.710 57
CPL   1.448    0.308     169.7  -40.1      1.36e-03 4.68e-04   71.020 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.648    0.194    -      -           1.08e-02 1.31e-03   45.830 57
CPL   1.448    0.000     127.3    0.0      1.39e-02 0.00e+00   45.640 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: 61.248000 sec.
T50 in the 50-300 keV band: 21.184000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  380.528  -80.752  299.776
T90   221.488  -36.256  185.232
T50    34.960   -1.840   33.120
Peak    1.000    7.556    8.556

Click here for the BAT GCN circular template

Special notes of this burst

Image

Pre-slew 15.0-350.0 keV image (Event data)

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
  330.8003   -54.7084   0.0058    20.3443   -90.0729         3.7472072     33.075 TRIG_00334112                 
 
Foreground time interval of the image:
-80.355  13.245 (delta_t =  93.600 [sec])
Background time interval of the image:

Lightcurves

Notes:

1) The mask-weighted light curves are using the flight position.
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 1.024000

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 1.024000

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 1.024000

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)

Spectral Evolution

Spectra

Notes:

1) The fitting includes the systematic errors.
2) When the burst includes telescope slew time periods, the fitting uses an average response file made from multiple 5-s response files through out the slew time plus single time preiod for the non-slew times, and weighted by the total counts in the corresponding time period using addrmf. An average response file is needed becuase a spectral fit using 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.

Time averaged spectrum fit using the average DRM

Power-law model

Time interval is from  -80.752 sec. to  299.776 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.60842     ( -0.0845167   0.0850958 )
Norm@50keV  : 1.12546E-03    ( -5.23581e-05   5.21783e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          71.71 using 59 PHA bins.
# Reduced chi-squared =          1.258 for     57 degrees of freedom 
# Null hypothesis probability =   9.079826e-02
 
Photon flux (15-150 keV)    in 380.5 sec: 0.145006 ( -0.00674865  0.00676137 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.00096e-06 ( -2.00199e-07  2.01154e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from  -80.752 sec. to  299.776 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.44755     ( -0.349408   0.267526 )
Epeak [keV] : 169.710      ( -89.5588 -169.74 )
Norm@50keV  : 1.35704E-03    ( -0.000274057   0.000662928 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          71.02 using 59 PHA bins.
# Reduced chi-squared =          1.268 for     56 degrees of freedom 
# Null hypothesis probability =   8.525306e-02
 
Photon flux (15-150 keV)    in 380.5 sec: 0.143518 ( -0.007356  0.00734 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.94289e-06 ( -2.35275e-07  2.33246e-07 ) ergs/cm2

Band function

Time interval is from  -80.752 sec. to  299.776 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.06343   ( 1.06697   1.06697 )
beta        : -1.72588    ( 1.72495   0.162612 )
Epeak [keV] : 68.2546      ( -68.7065 -68.7065 )
Norm@50keV   : 2.31002E-03    ( -0.00118707   0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          69.81 using 59 PHA bins.
# Reduced chi-squared =          1.269 for     55 degrees of freedom 
# Null hypothesis probability =   8.620300e-02
 
Photon flux (15-150 keV)    in 380.5 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2

Single BB

 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 13.7799  (  )
R^2/D10^2   : 2.09476E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         176.11 using 59 PHA bins.
# Reduced chi-squared =         3.0896 for     57 degrees of freedom 
# Null hypothesis probability =   4.365788e-14
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.201e-07   2.804e-08
25- 50  1.172e-06   6.678e-08
50-150  1.453e-06   1.454e-07
15-150  2.945e-06   1.520e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 175.924       (-38.866      -175.921)
Norm        : 0.587560       (-0.0292795     0.0320285)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          71.68 using 59 PHA bins.
# Reduced chi-squared =          1.258 for     57 degrees of freedom 
# Null hypothesis probability =   9.125310e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.653e-07   3.653e-08
25- 50  1.071e-06   1.212e-07
50-150  2.249e-06   6.760e-07
15-150  3.885e-06   8.348e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.15833        (-1.21425      1.19712)
R1^2/D10^2  : 9.78831E-02        (-0.0338554      0.0653728)
kT2 [keV]   : 31.6084        (-6.78457      13.0036)
R2^2/D10^2  : 8.31359E-04    (-0.000546071   0.00113794)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          75.88 using 59 PHA bins.
# Reduced chi-squared =          1.380 for     55 degrees of freedom 
# Null hypothesis probability =   3.250351e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.025e-07   7.551e-08
25- 50  1.124e-06   1.387e-07
50-150  2.311e-06   7.167e-07
15-150  3.938e-06   9.473e-07

Peak spectrum fit

Power-law model

Time interval is from    7.556 sec. to    8.556 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.64788     ( -0.191028   0.197198 )
Norm@50keV  : 1.08356E-02    ( -0.00132227   0.00130001 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.83 using 59 PHA bins.
# Reduced chi-squared =         0.8040 for     57 degrees of freedom 
# Null hypothesis probability =   8.554665e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.41387 ( -0.155823  0.155877 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.00796e-07 ( -1.30332e-08  1.32205e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    7.556 sec. to    8.556 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.44794     (     )
Epeak [keV] : 127.330      (   )
Norm@50keV  : 1.39274E-02    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.64 using 59 PHA bins.
# Reduced chi-squared =         0.8150 for     56 degrees of freedom 
# Null hypothesis probability =   8.371429e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.40396 ( -0.16075  0.15956 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.89902e-08 ( -1.51146e-08  1.42488e-08 ) ergs/cm2

Band function

Time interval is from    7.556 sec. to    8.556 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.454297   ( 0.7119   5.68821 )
beta        : -1.84332    ( 1.82287   0.318088 )
Epeak [keV] : 44.9559      ( -45.1361 131.052 )
Norm@50keV   : 6.10218E-02    ( -0.0637084   1.40155e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.57 using 59 PHA bins.
# Reduced chi-squared =         0.8103 for     55 degrees of freedom 
# Null hypothesis probability =   8.415305e-01
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2

Single BB

 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 12.0277  (-1.57208  1.85881)
R^2/D10^2   : 0.344505  (-0.139499   0.226822)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.33 using 59 PHA bins.
# Reduced chi-squared =          1.111 for     57 degrees of freedom 
# Null hypothesis probability =   2.628522e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.054e-08   1.994e-09
25- 50  3.327e-08   4.930e-09
50-150  2.899e-08   7.555e-09
15-150  7.280e-08   1.068e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 152.380       (-62.0197      -150.977)
Norm        : 5.83536       (-0.692386     0.893148)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.73 using 59 PHA bins.
# Reduced chi-squared =         0.8023 for     57 degrees of freedom 
# Null hypothesis probability =   8.578897e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.497e-08   4.456e-09
25- 50  2.781e-08   1.243e-08
50-150  5.524e-08   3.177e-08
15-150  9.801e-08   4.390e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.54594        (-2.25048      2.22996)
R1^2/D10^2  : 0.953512        (-0.456539      0.672549)
kT2 [keV]   : 42.1183        (-23.0978      -44.6404)
R2^2/D10^2  : 3.03847E-03    (-0.00252996   0.0271698)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.57 using 59 PHA bins.
# Reduced chi-squared =         0.8103 for     55 degrees of freedom 
# Null hypothesis probability =   8.415950e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.384e-08   4.885e-09
25- 50  3.040e-08   1.044e-08
50-150  5.553e-08   2.993e-08
15-150  9.976e-08   3.957e-08

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: 1.54761     ( -0.0835282   0.0840082 )
Norm@50keV  : 2.66216E-03    ( -0.000120726   0.000120282 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.90 using 59 PHA bins.
# Reduced chi-squared =          1.156 for     57 degrees of freedom 
# Null hypothesis probability =   1.961510e-01
 
Photon flux (15-150 keV)    in 93.6 sec: 0.336781 ( -0.0155887  0.0156365 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.3466e-06 ( -1.15389e-07  1.15936e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.39126     ( -0.331974   0.198869 )
Epeak [keV] : 201.095      ( -201.094 -201.094 )
Norm@50keV  : 3.17197E-03    ( -0.000606227   0.00138264 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.18 using 59 PHA bins.
# Reduced chi-squared =          1.164 for     56 degrees of freedom 
# Null hypothesis probability =   1.877940e-01
 
Photon flux (15-150 keV)    in 93.6 sec: 0.333330 ( -0.016936  0.01678 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.31831e-06 ( -1.2973e-07  1.27118e-07 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.39884   ( -0.134493   0.314631 )
beta        : -9.37162    ( 9.37167   19.3717 )
Epeak [keV] : 210.326      ( -78.1352 -209.897 )
Norm@50keV   : 3.14164E-03    ( -0.000168727   0.00067571 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.18 using 59 PHA bins.
# Reduced chi-squared =          1.185 for     55 degrees of freedom 
# Null hypothesis probability =   1.637610e-01
 
Photon flux (15-150 keV)    in 93.6 sec: 0.333243 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2

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

S(25-50 keV)  = 1.04e-06
S(50-100 keV) = 1.37e-06

T90 vs. Hardness ratio plot

T90                                   = 221.487999975681 sec.
Hardness ratio (energy fluence ratio) = 1.31731

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.29941
Count Ratio (50-100 keV) / (15-25 keV) = 0.888458

Mask shadow pattern

IMX = -4.719629474907354E-04, IMY = 3.707903229589902E-01

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000

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:
-80.355410 13.244600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 14.1139 -30.7479    2.6  18.7  100.5   0.4998   4.4 ------	UNKNOWN                       
330.8003 -54.7084    0.3  20.3  -90.1   3.7467  33.1 ------	UNKNOWN                       
296.3265 -38.9932    2.3  44.4  -61.7   2.0616   5.1 ------	UNKNOWN                       
294.5503 -54.0417    2.0  41.0  -83.4   2.3087   5.9 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
55.044620 962.264000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
276.1380 -30.3007    8.8  45.6  -57.8   3.2014   1.3   11.7	H1820-303                     
284.8494 -25.0204   11.7  44.8  -44.6   1.2340   1.0   11.8	HT1900.1-2455                 
294.3946 -34.4913    2.8  32.3  -43.5   1.9580   4.2 ------	UNKNOWN

Plot creation:
Sun May 31 05:33:06 EDT 2015