batgrbproduct analysis for trigger=213486

batgrbproduct Analysis for Trigger=213486

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): Wed Jan 22 15:47:34 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger213486
======================================================================

  Trigger: 00213486      Segment: 000

  BAT Trigger Time: 171137941.248   [s; MET]
      Trigger Stop: 171137945.344   [s; MET]
               UTC: 2006-06-04T18:19:00.012500    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 337.242167553083   Dec: -10.9050195742294  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    6.78
     Image Trigger?:     NO
     Rate S/N Ratio:     12.4899959967968  [ if not an image trigger ]
     Image S/N Ratio:    6.78

  Flight Position:   [ source = BAT ]
    RA: 337.242167553083   Dec: -10.9050195742294  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 337.242   Dec: -10.905  [deg; J2000]
        { 22h 28m 58.1s , -10d -54' -18.0" }
        +/- 2.54465264693 [arcmin] (estimated 90% radius based on SNR)
    SNR: 8.01135359129
 
 
  Angular difference between Flight and Ground position is 0.009941 arcmin
 
  Partial Coding Fraction: 0.7265625    [ including projection effects ]

  Duration
     T90: 96 +/- 22.6274169979695
        Measured from: -63.2479999959469
                   to: 32.7520000040531     [s; relative to TRIGTIME]
     T50: 48 +/- 16
        Measured from: -47.2479999959469
                   to: 0.752000004053116     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 8.25200000405312     
                   to: 9.25200000405312     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -63.2479999959469     
                   to: 32.7520000040531     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.271914   0.279691   0.142609   0.053713
           0.051406   0.051975   0.045582   0.040479 [error]
 Peak      0.002520   0.004688  -0.000435  -0.000359
           0.005332   0.005247   0.004591   0.004181 [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 8.74e-08 1.15e-07 1.11e-07 1.90e-07 3.76e-07 5.02e-07   erg/cm2
              Error 2.40e-08 2.42e-08 4.38e-08 1.51e-07 9.93e-08 2.01e-07   erg/cm2
Peak flux Power-law 2.75e-02 2.79e-04 5.52e-07 1.05e-09 2.78e-02 2.78e-02   ph/cm2/s
              Error 5.31e-02 2.45e-02 1.39e-02 0.00e+00 7.69e-02 7.88e-02   ph/cm2/s
 
Fluence   Cutoff-PL 8.75e-08 1.15e-07 1.10e-07 1.87e-07 3.75e-07 5.00e-07   erg/cm2
              Error 2.41e-08 2.81e-08 4.35e-08 1.84e-07 9.24e-08 1.70e-07   erg/cm2
Peak flux Cutoff-PL 8.19e-03 9.66e-07 1.67e-14 -------- 8.19e-03 1.97e-03   ph/cm2/s
              Error 4.90e-02 -------- -------- -------- 7.43e-02 --------   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    2.054    0.423    -      -           4.23e-04 1.21e-04   41.520 57
CPL   2.071    0.000     139.8    0.0      4.12e-04 0.00e+00   41.520 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL   10.000    0.000    -      -           9.92e-08 0.00e+00   52.680 57
CPL  -9.981    0.000      48.0    0.0      3.36e+02 0.00e+00   52.660 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   96.000  -63.248   32.752
T90    96.000  -63.248   32.752
T50    48.000  -47.248    0.752
Peak    1.000    8.252    9.252

Click here for the BAT GCN circular template

Special notes of this burst

Image

Pre-slew 15.0-50.0 keV image (Event data)

#RAcent DECcent POSerr Theta  Phi  Peak_Cts  SNR Name
337.242 -10.905 0.000 25.123 148.851 0.123 8.011 TRIG_00213486
 
Image time interval: 0.000 to 4.096 [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 4.096000

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 4.096000

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 4.096000

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  -63.248 sec. to   32.752 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.05392     ( -0.393319   0.453088 )
Norm@50keV  : 4.22780E-04    ( -0.000124944   0.000118021 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.52 using 59 PHA bins.
# Reduced chi-squared =         0.7285 for     57 degrees of freedom 
# Null hypothesis probability =   9.385169e-01
 
Photon flux (15-150 keV)    in 96 sec: 6.50415E-02 ( -0.0131122  0.0131132 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.75592e-07 ( -9.65933e-08  1.02045e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from  -63.248 sec. to   32.752 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.07142     (     )
Epeak [keV] : 139.754      (   )
Norm@50keV  : 4.11897E-04    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.52 using 59 PHA bins.
# Reduced chi-squared =         0.7414 for     56 degrees of freedom 
# Null hypothesis probability =   9.255615e-01
 
Photon flux (15-150 keV)    in 96 sec: 6.50222E-02 ( -0.0131175  0.0130775 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.75056e-07 ( -1.07346e-07  7.73962e-08 ) ergs/cm2

Band function

Time interval is from  -63.248 sec. to   32.752 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.71422   ( 1.71566   1.71566 )
beta        : -2.05290    ( 2.05347   0.393231 )
Epeak [keV] : 12.5239      ( -11.9154 -11.9154 )
Norm@50keV   : 8.95323E-04    ( -0.000546283   0.0726035 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.52 using 59 PHA bins.
# Reduced chi-squared =         0.7550 for     55 degrees of freedom 
# Null hypothesis probability =   9.103668e-01
 
Photon flux (15-150 keV)    in 96 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]    : 9.32581  (-2.48293  3.11254)
R^2/D10^2   : 3.83963E-02  (-0.0253219   0.087869)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.54 using 59 PHA bins.
# Reduced chi-squared =         0.8692 for     57 degrees of freedom 
# Null hypothesis probability =   7.480210e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.350e-08   2.588e-08
25- 50  1.426e-07   5.442e-08
50-150  6.057e-08   3.290e-08
15-150  2.666e-07   1.117e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 61.1785       (-29.0751      86.7189)
Norm        : 0.336336       (-0.0993549     0.159425)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.27 using 59 PHA bins.
# Reduced chi-squared =         0.7415 for     57 degrees of freedom 
# Null hypothesis probability =   9.274095e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.140e-08   2.551e-08
25- 50  1.246e-07   4.082e-08
50-150  1.441e-07   9.510e-08
15-150  3.501e-07   1.338e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.04912        (-1.94053      2.80373)
R1^2/D10^2  : 0.771232        (-0.670175      26.1189)
kT2 [keV]   : 16.2361        (-5.76965      19.1527)
R2^2/D10^2  : 3.65555E-03    (-0.00344163   0.0113429)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.29 using 59 PHA bins.
# Reduced chi-squared =         0.7507 for     55 degrees of freedom 
# Null hypothesis probability =   9.146441e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.048e-08   4.886e-08
25- 50  1.079e-07   5.688e-08
50-150  1.508e-07   9.869e-08
15-150  3.492e-07   1.849e-07

Peak spectrum fit

Power-law model

Time interval is from    8.252 sec. to    9.252 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 10.0000     (     )
Norm@50keV  : 9.92330E-08    ( -9.82667e-08   -9.82667e-08 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.68 using 59 PHA bins.
# Reduced chi-squared =         0.9243 for     57 degrees of freedom 
# Null hypothesis probability =   6.375550e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.95873E-02 2.77539E-02 ( -0.0295873  0.124165 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.0488e-19 ( -8.0578e-10  8.30466e-09 ) ergs/cm2

Cutoff power-law model

Time interval is from    8.252 sec. to    9.252 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -9.98105     (     )
Epeak [keV] : 48.0057      ( -47.6986 -47.6986 )
Norm@50keV  : 336.409    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.66 using 59 PHA bins.
# Reduced chi-squared =         0.9404 for     56 degrees of freedom 
# Null hypothesis probability =   6.018992e-01
 
Photon flux (15-150 keV)    in 1 sec: 8.19379E-03 ( -0.00819379  0.140468 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.51164e-20 ( 0  0 ) ergs/cm2

Band function

Time interval is from    8.252 sec. to    9.252 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -9.81322   ( 9.81322   9.81322 )
beta        : -10.0000    ( 10   10 )
Epeak [keV] : 14.7041      ( -14.7041 -14.7041 )
Norm@50keV   : 1.34059E-05    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.68 using 59 PHA bins.
# Reduced chi-squared =         0.9579 for     55 degrees of freedom 
# Null hypothesis probability =   5.635919e-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]    : 0.760385  (-10.6951  -10.6951)
R^2/D10^2   : 1.62919E+07  (-1.79629e+07   -1.79629e+07)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.44 using 59 PHA bins.
# Reduced chi-squared =         0.9199 for     57 degrees of freedom 
# Null hypothesis probability =   6.467412e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.821e-10   6.145e-10
25- 50  1.587e-09   2.150e-09
50-150  1.003e-09   1.297e-09
15-150  3.172e-09   2.945e-09

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 0.928627       (-0.921843      -0.921843)
Norm        : 3.15821E+06       (-3.863e+06     -3.863e+06)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.44 using 59 PHA bins.
# Reduced chi-squared =         0.9199 for     57 degrees of freedom 
# Null hypothesis probability =   6.467187e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.621e-10   1.468e-10
25- 50  1.320e-12   4.568e-14
50-150  3.004e-19   2.622e-20
15-150  6.634e-10   1.713e-10

Double BB

------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.20 using 59 PHA bins.
#Fit statistic : Chi-Squared =          52.06 using 59 PHA bins.
#Fit statistic : Chi-Squared =          52.00 using 59 PHA bins.
#Fit statistic : Chi-Squared =          51.98 using 59 PHA bins.
# Reduced chi-squared =         0.9492 for     55 degrees of freedom 
# Reduced chi-squared =         0.9465 for     55 degrees of freedom 
# Reduced chi-squared =         0.9454 for     55 degrees of freedom 
# Reduced chi-squared =         0.9451 for     55 degrees of freedom 
# Null hypothesis probability =   5.821061e-01
# Null hypothesis probability =   5.878317e-01
# Null hypothesis probability =   5.900282e-01
# Null hypothesis probability =   5.907645e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.332e-10   3.877e-10
25- 50  1.175e-09   8.590e-10
50-150  9.474e-10   1.693e-09
15-150  3.055e-09   3.258e-09

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: 2.05392     ( -0.393319   0.453088 )
Norm@50keV  : 4.22780E-04    ( -0.000124944   0.000118021 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.52 using 59 PHA bins.
# Reduced chi-squared =         0.7285 for     57 degrees of freedom 
# Null hypothesis probability =   9.385169e-01
 
Photon flux (15-150 keV)    in 96 sec: 6.50415E-02 ( -0.0131122  0.0131132 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.75592e-07 ( -9.65933e-08  1.02045e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.07142     (     )
Epeak [keV] : 139.754      (   )
Norm@50keV  : 4.11897E-04    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.52 using 59 PHA bins.
# Reduced chi-squared =         0.7414 for     56 degrees of freedom 
# Null hypothesis probability =   9.255615e-01
 
Photon flux (15-150 keV)    in 96 sec: 6.50222E-02 ( -0.0131175  0.0130775 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.75056e-07 ( -1.07346e-07  7.73962e-08 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.71422   ( 1.71566   1.71566 )
beta        : -2.05290    ( 2.05347   0.393231 )
Epeak [keV] : 12.5239      ( -11.9154 -11.9154 )
Norm@50keV   : 8.95323E-04    ( -0.000546283   0.0726035 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.52 using 59 PHA bins.
# Reduced chi-squared =         0.7550 for     55 degrees of freedom 
# Null hypothesis probability =   9.103668e-01
 
Photon flux (15-150 keV)    in 96 sec:  (    ) 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)  = 1.15e-07
S(50-100 keV) = 1.11e-07

T90 vs. Hardness ratio plot

T90                                   = 96 sec.
Hardness ratio (energy fluence ratio) = 0.965217

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.0286
Count Ratio (50-100 keV) / (15-25 keV) = 0.524464

Mask shadow pattern

IMX = -0.401323066356, IMY = -0.242564705896

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 4.096000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 4.096000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 4.096000

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:
-90.747400 -63.248000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
313.3389 -19.0665    2.2  40.9  113.2   0.9922   5.3 ------	UNKNOWN                       
 15.9772  -1.9235    3.0  31.4 -121.0   0.2349   3.9 ------	UNKNOWN                       
  4.4140  28.0471    2.3  56.2 -151.5   1.0963   5.1 ------	UNKNOWN

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

Time interval of the image:
-63.248000 32.752000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
340.8480 -68.0528    2.2  41.5   29.9   1.7879   5.2 ------	UNKNOWN                       
333.2556 -41.9486    2.4  24.1   68.3   1.0568   4.7 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
97.852600 274.852600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
326.0490  38.2929    6.8  50.3 -170.1   0.5268   1.7    6.0	Cyg X-2                       
307.2726 -30.6007    2.8  34.1   71.5   1.1758   4.2 ------	UNKNOWN                       
345.1280 -43.2068    2.7  33.0   10.8   0.7012   4.3 ------	UNKNOWN                       
331.3574  48.2172    3.0  59.4 -163.2   3.4898   3.9 ------	UNKNOWN                       
 29.8313 -44.0363    2.3  55.9  -22.2   2.1923   5.0 ------	UNKNOWN

Plot creation:
Wed Nov 25 17:02:59 EST 2015