batgrbproduct analysis for trigger=333666

batgrbproduct Analysis for Trigger=333666

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 20:54:18 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger333666
======================================================================

  Trigger: 00333666      Segment: 000

  BAT Trigger Time: 247484085.696   [s; MET]
      Trigger Stop: 247484093.888   [s; MET]
               UTC: 2008-11-04T09:34:42.467620    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 100.485289941374   Dec: -54.7321618369165  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.32
     Image Trigger?:     NO
     Rate S/N Ratio:     6.70820393249937  [ if not an image trigger ]
     Image S/N Ratio:    9.32

  Flight Position:   [ source = BAT ]
    RA: 100.485289941374   Dec: -54.7321618369165  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 100.498811005272   Dec: -54.7198364861277  [deg; J2000]  
        { 06h 41m 59.7s , -54d 43' 11.4" }
         +/- 1.3262778339297 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.607722226441068 [arcmin] (formal 1-sigma fit error)
    SNR: 20.3201177828557
 
  Angular difference between Flight and Ground position is 0.875430 arcmin
 
  Partial Coding Fraction: 0.3203125    [ including projection effects ]

  Duration
     T90: 64 +/- 15.2643375224737
        Measured from: -14.6960000097752
                   to: 49.3039999902248     [s; relative to TRIGTIME]
     T50: 23 +/- 5.3851648071345
        Measured from: 6.30399999022484
                   to: 29.3039999902248     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 20.3039999902248     
                   to: 21.3039999902248     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -23.6960000097752     
                   to: 57.3039999902248     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.171929   1.374217   0.762523   0.165470
           0.084961   0.089939   0.080511   0.075021 [error]
 Peak      0.039635   0.035506   0.034610   0.005506
           0.009764   0.010356   0.009336   0.008367 [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 4.43e-07 6.22e-07 6.47e-07 1.24e-06 2.10e-06 2.95e-06   erg/cm2
              Error 5.21e-08 4.77e-08 7.86e-08 3.04e-07 1.83e-07 3.82e-07   erg/cm2
Peak flux Power-law 4.13e-01 3.38e-01 1.87e-01 1.53e-01 1.01e+00 1.09e+00   ph/cm2/s
              Error 1.65e-01 9.24e-02 7.33e-02 1.16e-01 2.76e-01 2.98e-01   ph/cm2/s
 
Fluence   Cutoff-PL 4.21e-07 6.53e-07 6.49e-07 6.34e-07 2.03e-06 2.36e-06   erg/cm2
              Error 5.96e-08 6.19e-08 8.45e-08 5.24e-07 2.04e-07 6.12e-07   erg/cm2
Peak flux Cutoff-PL 3.67e-01 3.76e-01 1.96e-01 5.74e-02 9.81e-01 9.96e-01   ph/cm2/s
              Error 1.88e-01 1.19e-01 8.80e-02 1.32e-01 2.80e-01 3.15e-01   ph/cm2/s
 
Fluence        Band 4.14e-07 6.58e-07 6.30e-07 9.54e-07 2.04e-06 2.66e-06   erg/cm2
              Error -------- -------- 9.25e-08 -------- -------- --------   erg/cm2
Peak flux      Band 3.74e-01 3.69e-01 1.98e-01 6.79e-02 9.89e-01 1.01e+00   ph/cm2/s
              Error -------- -------- -------- -------- 2.82e-01 --------   ph/cm2/s

 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.943    0.142    -      -           2.82e-03 2.51e-04   51.830 57
CPL   1.522    0.575      51.2   -7.2      4.79e-03 3.90e-03   50.060 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.852    0.472    -      -           7.15e-03 2.21e-03   82.710 57
CPL   0.917    1.882      52.9    0.0      2.32e-02 0.00e+00   81.850 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: 26.944000 sec.
T50 in the 50-300 keV band: 14.656000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   81.000  -23.696   57.304
T90    64.000  -14.696   49.304
T50    23.000    6.304   29.304
Peak    1.000   20.304   21.304

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
  100.4988   -54.7198   0.0095    47.8516  -177.4057         3.8681784     20.320 TRIG_00333666                 
 
Foreground time interval of the image:
-23.696  57.304 (delta_t =  81.000 [sec])
Background time interval of the image:
-239.696 -23.696 (delta_t = 216.000 [sec])

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 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)

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  -23.696 sec. to   57.304 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.94346     ( -0.139839   0.144434 )
Norm@50keV  : 2.82002E-03    ( -0.000252574   0.000248823 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.83 using 59 PHA bins.
# Reduced chi-squared =         0.9093 for     57 degrees of freedom 
# Null hypothesis probability =   6.687401e-01
 
Photon flux (15-150 keV)    in 81 sec: 0.412377 ( -0.0323832  0.0324281 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.10168e-06 ( -1.81809e-07  1.83474e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from  -23.696 sec. to   57.304 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.52235     ( -0.615198   0.534242 )
Epeak [keV] : 51.2182      ( -36.901 -51.2182 )
Norm@50keV  : 4.79032E-03    ( -0.0022987   0.00549308 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.06 using 59 PHA bins.
# Reduced chi-squared =         0.8938 for     56 degrees of freedom 
# Null hypothesis probability =   6.982349e-01
 
Photon flux (15-150 keV)    in 81 sec: 0.404656 ( -0.033858  0.03383 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.03005e-06 ( -2.03521e-07  2.04647e-07 ) ergs/cm2

Band function

Time interval is from  -23.696 sec. to   57.304 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.52228   ( 1.55131   0.591006 )
beta        : -10.0000    ( 10   7.10543e-15 )
Epeak [keV] : 51.2100      ( -14.5328 -51.21 )
Norm@50keV   : 4.78984E-03    ( -0.00178968   0.0054957 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.06 using 59 PHA bins.
# Reduced chi-squared =         0.9101 for     55 degrees of freedom 
# Null hypothesis probability =   6.635953e-01
 
Photon flux (15-150 keV)    in 81 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.04011e-06 ( 0  0 ) ergs/cm2

Single BB

 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 11.1164  (-1.04948  1.15519)
R^2/D10^2   : 0.126399  (-0.0395985   0.0581112)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          88.22 using 59 PHA bins.
# Reduced chi-squared =          1.548 for     57 degrees of freedom 
# Null hypothesis probability =   5.016583e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.649e-07   3.665e-08
25- 50  7.592e-07   7.444e-08
50-150  5.342e-07   1.065e-07
15-150  1.558e-06   1.438e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 78.2973       (-17.3362      25.93)
Norm        : 1.93654       (-0.229491     0.268402)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.40 using 59 PHA bins.
# Reduced chi-squared =         0.8843 for     57 degrees of freedom 
# Null hypothesis probability =   7.191276e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.064e-07   4.645e-08
25- 50  6.656e-07   5.459e-08
50-150  9.259e-07   1.895e-07
15-150  1.998e-06   2.114e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.39202        (-1.29519      1.75221)
R1^2/D10^2  : 1.33447        (-0.823337      1.79248)
kT2 [keV]   : 18.5918        (-3.69047      7.26653)
R2^2/D10^2  : 1.35669E-02    (-0.00975801   0.0128027)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.96 using 59 PHA bins.
# Reduced chi-squared =         0.9265 for     55 degrees of freedom 
# Null hypothesis probability =   6.298020e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.275e-07   1.650e-07
25- 50  6.322e-07   1.943e-07
50-150  9.170e-07   3.476e-07
15-150  1.977e-06   6.168e-07

Peak spectrum fit

Power-law model

Time interval is from   20.304 sec. to   21.304 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.85232     ( -0.447713   0.497146 )
Norm@50keV  : 7.15498E-03    ( -0.00225492   0.00216875 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          82.71 using 59 PHA bins.
# Reduced chi-squared =          1.451 for     57 degrees of freedom 
# Null hypothesis probability =   1.464267e-02
 
Photon flux (15-150 keV)    in 1 sec: 1.00666 ( -0.276208  0.276767 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.57878e-08 ( -2.00212e-08  2.0659e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   20.304 sec. to   21.304 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.917423     ( -2.50272   1.26059 )
Epeak [keV] : 52.9026      (   )
Norm@50keV  : 2.31570E-02    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          81.85 using 59 PHA bins.
# Reduced chi-squared =          1.462 for     56 degrees of freedom 
# Null hypothesis probability =   1.373809e-02
 
Photon flux (15-150 keV)    in 1 sec: 0.980701 ( -0.279737  0.280539 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.2129e-08 ( -2.02287e-08  2.16883e-08 ) ergs/cm2

Band function

Time interval is from   20.304 sec. to   21.304 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.93321   ( -7.88397   -4.93321 )
beta        : -2.05942    ( -0.744275   0.537051 )
Epeak [keV] : 24.2461      ( -24.2461 8.50384 )
Norm@50keV   : 1178.01    ( -313.636   9.27776e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          81.22 using 59 PHA bins.
# Reduced chi-squared =          1.477 for     55 degrees of freedom 
# Null hypothesis probability =   1.230817e-02
 
Photon flux (15-150 keV)    in 1 sec: 0.988991 ( 6.01101  -0.289603 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.2428e-08 ( 0  0 ) ergs/cm2

Single BB

 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 12.0283  (-3.63995  4.86595)
R^2/D10^2   : 0.244713  (-0.175889   0.684747)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          84.52 using 59 PHA bins.
# Reduced chi-squared =          1.483 for     57 degrees of freedom 
# Null hypothesis probability =   1.041226e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.490e-09   4.663e-09
25- 50  2.364e-08   1.379e-08
50-150  2.060e-08   1.386e-08
15-150  5.172e-08   3.365e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 88.2443       (-48.1031      -88.2411)
Norm        : 4.65409       (-1.49368     2.33106)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          81.97 using 59 PHA bins.
# Reduced chi-squared =          1.438 for     57 degrees of freedom 
# Null hypothesis probability =   1.680369e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.214e-08   7.489e-09
25- 50  2.044e-08   1.170e-08
50-150  3.074e-08   2.579e-08
15-150  6.331e-08   3.708e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.10094        (-2.27954      87.8354)
R1^2/D10^2  : 3.64360        (-3.43495      112.406)
kT2 [keV]   : 17.7720        (-17.7999      76.8533)
R2^2/D10^2  : 4.50584E-02    (-0.0446448   0.271894)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          81.25 using 59 PHA bins.
# Reduced chi-squared =          1.477 for     55 degrees of freedom 
# Null hypothesis probability =   1.222606e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.245e-08   7.215e-09
25- 50  1.968e-08   1.030e-08
50-150  3.024e-08   2.130e-08
15-150  6.237e-08   3.289e-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: 1.94346     ( -0.139839   0.144434 )
Norm@50keV  : 2.82002E-03    ( -0.000252574   0.000248823 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.83 using 59 PHA bins.
# Reduced chi-squared =         0.9093 for     57 degrees of freedom 
# Null hypothesis probability =   6.687401e-01
 
Photon flux (15-150 keV)    in 81 sec: 0.412377 ( -0.0323832  0.0324281 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.10168e-06 ( -1.81809e-07  1.83474e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.52235     ( -0.615198   0.534242 )
Epeak [keV] : 51.2182      ( -36.901 -51.2182 )
Norm@50keV  : 4.79032E-03    ( -0.0022987   0.00549308 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.06 using 59 PHA bins.
# Reduced chi-squared =         0.8938 for     56 degrees of freedom 
# Null hypothesis probability =   6.982349e-01
 
Photon flux (15-150 keV)    in 81 sec: 0.404656 ( -0.033858  0.03383 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.03005e-06 ( -2.03521e-07  2.04647e-07 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.52228   ( 1.55131   0.591006 )
beta        : -10.0000    ( 10   20 )
Epeak [keV] : 51.2100      ( -14.5328 -51.21 )
Norm@50keV   : 4.78984E-03    ( -0.00178968   0.0054957 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.06 using 59 PHA bins.
# Reduced chi-squared =         0.9101 for     55 degrees of freedom 
# Null hypothesis probability =   6.635953e-01
 
Photon flux (15-150 keV)    in 81 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.04011e-06 ( 0  0 ) ergs/cm2

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

S(25-50 keV)  = 6.22e-07
S(50-100 keV) = 6.47e-07

T90 vs. Hardness ratio plot

T90                                   = 64 sec.
Hardness ratio (energy fluence ratio) = 1.04019

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.17261
Count Ratio (50-100 keV) / (15-25 keV) = 0.650656

Mask shadow pattern

IMX = -1.103713398757182E+00, IMY = 5.000866963813672E-02

TIME vs. PHA plot around the trigger time

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

TIME vs. DetID plot around the trigger time

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

100 us light curve (15-350 keV)

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

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:
-239.696000 -23.696000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
264.5327 -44.4278    7.6  46.7  -55.5  -1.2743  -1.5    9.1	4U 1735-44                    
285.1473 -24.9264    7.9  56.5  -24.9  -1.0723  -1.5    6.1	HT1900.1-2455                 
322.3384 -16.0893    2.8  54.4   18.9   4.0364   4.2 ------	UNKNOWN

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

Time interval of the image:
-23.696000 57.304000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
265.0034 -44.4183    5.1  46.5  -55.1   0.9956   2.3   11.3	4U 1735-44                    
284.9932 -25.0098    7.7  56.5  -25.1   0.6532   1.5    5.8	HT1900.1-2455                 
100.4988 -54.7198    0.6  47.9 -177.4   3.8683  20.3 ------	UNKNOWN                       
295.9070 -53.1007    2.2  27.9  -35.2   0.5550   5.1 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:

Plot creation:
Sun May 31 05:35:32 EDT 2015