batgrbproduct analysis for trigger=207399

batgrbproduct Analysis for Trigger=207399

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 17:06:07 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger207399
======================================================================

  Trigger: 00207399      Segment: 000

  BAT Trigger Time: 167907280   [s; MET]
      Trigger Stop: 167907408   [s; MET]
               UTC: 2006-04-28T08:54:38.839960    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 235.350233277521   Dec: 62.0100932089346  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    14.21
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    14.21

  Flight Position:   [ source = BAT ]
    RA: 235.350233277521   Dec: 62.0100932089346  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 235.346372263927   Dec: 62.0180387074765  [deg; J2000]  
        { 15h 41m 23.1s , +62d 01' 04.9" }
         +/- 2.75105152721155 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.64213268654636 [arcmin] (formal 1-sigma fit error)
    SNR: 7.16577320675431
 
  Angular difference between Flight and Ground position is 0.488967 arcmin
 
  Partial Coding Fraction: 0.7421875    [ including projection effects ]

  Duration
     T90: 96 +/- 50.5964425626941
        Measured from: -15
                   to: 81     [s; relative to TRIGTIME]
     T50: 16 +/- 22.6274169979695
        Measured from: 1
                   to: 17     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 8.5     
                   to: 9.5     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -15     
                   to: 113     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.987094   0.788057   0.079260   0.036526
           0.063340   0.066089   0.058137   0.051424 [error]
 Peak      0.017597   0.013364   0.005690  -0.005076
           0.005793   0.005954   0.005202   0.004435 [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 3.33e-07 2.84e-07 1.65e-07 1.43e-07 8.44e-07 9.25e-07   erg/cm2
              Error 3.96e-08 3.54e-08 4.35e-08 6.92e-08 1.05e-07 1.41e-07   erg/cm2
Peak flux Power-law 1.55e-01 1.00e-01 4.19e-02 2.38e-02 3.09e-01 3.21e-01   ph/cm2/s
              Error 8.31e-02 4.90e-02 3.42e-02 3.99e-02 1.41e-01 1.50e-01   ph/cm2/s
 
Fluence   Cutoff-PL 3.17e-07 3.21e-07 7.23e-08 1.92e-09 7.12e-07 7.12e-07   erg/cm2
              Error 4.40e-08 4.66e-08 5.91e-08 1.88e-08 1.02e-07 1.04e-07   erg/cm2
Peak flux Cutoff-PL 1.79e-01 1.20e-01 4.93e-04 3.46e-11 2.99e-01 2.99e-01   ph/cm2/s
              Error 7.17e-02 6.66e-02 1.65e-02 0.00e+00 1.19e-01 1.19e-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    2.781    0.245    -      -           6.02e-04 1.17e-04   68.940 57
CPL   1.000    0.000      50.0    0.0      2.63e-03 0.00e+00  120.940 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.255    0.879    -      -           1.81e-03 1.17e-03   68.010 57
CPL -10.000    0.000      25.3    4.2      2.50e+06 8.21e+06   63.760 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  128.000  -15.000  113.000
T90    96.000  -15.000   81.000
T50    16.000    1.000   17.000
Peak    1.000    8.500    9.500

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
  235.3464    62.0180   0.0268    31.1257     2.6276         1.6281245      7.166 TRIG_00207399                 
 
Foreground time interval of the image:
-15.000 113.000 (delta_t = 128.000 [sec])
Background time interval of the image:
-68.699 -15.000 (delta_t =  53.699 [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 128.000000

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 128.000000

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 128.000000

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  -15.000 sec. to  113.000 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.78118     ( -0.233988   0.256811 )
Norm@50keV  : 6.01583E-04    ( -0.000115804   0.000118123 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.94 using 59 PHA bins.
# Reduced chi-squared =          1.209 for     57 degrees of freedom 
# Null hypothesis probability =   1.335460e-01
 
Photon flux (15-150 keV)    in 128 sec: 0.141792 ( -0.0139504  0.0139511 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.43811e-07 ( -1.02546e-07  1.06765e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from  -15.000 sec. to  113.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.00000     (     )
Epeak [keV] : 50.0000      (   )
Norm@50keV  : 2.62881E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         120.94 using 59 PHA bins.
# Reduced chi-squared =         2.1597 for     56 degrees of freedom 
# Null hypothesis probability =   1.121737e-06
 
Photon flux (15-150 keV)    in 128 sec: 0.133409 ( -0.014458  0.014656 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.11688e-07 ( -8.92698e-08  1.13916e-07 ) ergs/cm2

Band function

Time interval is from  -15.000 sec. to  113.000 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.696235   ( -1.25817   2.73364 )
beta        : -3.90510    ( 4.08004   1.03323 )
Epeak [keV] : 19.1475      ( -7.69281 2.91703 )
Norm@50keV   : 1.58859E-02    ( -0.0303497   1.35447 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.43 using 59 PHA bins.
# Reduced chi-squared =          1.135 for     55 degrees of freedom 
# Null hypothesis probability =   2.290778e-01
 
Photon flux (15-150 keV)    in 128 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]    : 6.31078  (-0.596017  0.645797)
R^2/D10^2   : 0.410714  (-0.142669   0.226087)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.13 using 59 PHA bins.
# Reduced chi-squared =          1.143 for     57 degrees of freedom 
# Null hypothesis probability =   2.148697e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.981e-07   4.928e-08
25- 50  3.311e-07   5.523e-08
50-150  3.714e-08   1.494e-08
15-150  6.664e-07   8.198e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 22.3699       (-4.37875      5.83178)
Norm        : 1.49966       (-0.335026     0.45784)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.97 using 59 PHA bins.
# Reduced chi-squared =          1.122 for     57 degrees of freedom 
# Null hypothesis probability =   2.450825e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.254e-07   3.923e-08
25- 50  3.095e-07   4.646e-08
50-150  1.112e-07   4.285e-08
15-150  7.461e-07   1.042e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 1.78497        (-1.37198      2.33511)
R1^2/D10^2  : 130.887        (-367.269      -368.621)
kT2 [keV]   : 6.85856        (-0.786384      1.08921)
R2^2/D10^2  : 0.266375    (-0.155332   0.102929)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.74 using 59 PHA bins.
# Reduced chi-squared =          1.104 for     55 degrees of freedom 
# Null hypothesis probability =   2.767520e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.060e-07   1.086e-07
25- 50  3.326e-07   9.632e-08
50-150  5.104e-08   2.644e-08
15-150  6.896e-07   2.436e-07

Peak spectrum fit

Power-law model

Time interval is from    8.500 sec. to    9.500 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.25498     ( -0.757467   1.00136 )
Norm@50keV  : 1.81429E-03    ( -0.00115098   0.00119651 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.01 using 59 PHA bins.
# Reduced chi-squared =          1.193 for     57 degrees of freedom 
# Null hypothesis probability =   1.507430e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.309242 ( -0.140826  0.14189 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.71661e-08 ( -9.07135e-09  1.04901e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    8.500 sec. to    9.500 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -10.0000     (     )
Epeak [keV] : 25.2679      ( -3.78109 4.63128 )
Norm@50keV  : 2.49788E+06    ( -2.49708e+06   1.39141e+07 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.76 using 59 PHA bins.
# Reduced chi-squared =          1.139 for     56 degrees of freedom 
# Null hypothesis probability =   2.224579e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.299459 ( -0.118816  0.118862 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.17396e-08 ( -4.75055e-09  4.8034e-09 ) ergs/cm2

Band function

Time interval is from    8.500 sec. to    9.500 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 5.00000   ( -6.29199   -5 )
beta        : -3.93318    ( 3.89022   1.77296 )
Epeak [keV] : 25.9162      ( -6.77836 6.72688 )
Norm@50keV   : 381.834    ( -156.232   2252.03 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.31 using 59 PHA bins.
# Reduced chi-squared =          1.169 for     55 degrees of freedom 
# Null hypothesis probability =   1.827188e-01
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.48256e-08 ( 0  0 ) ergs/cm2

Single BB

 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 6.87140  (-2.20413  3.94912)
R^2/D10^2   : 0.696999  (-0.696999   2.7436)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.01 using 59 PHA bins.
# Reduced chi-squared =          1.158 for     57 degrees of freedom 
# Null hypothesis probability =   1.936248e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.184e-09   3.314e-09
25- 50  6.847e-09   4.349e-09
50-150  1.061e-09   9.145e-10
15-150  1.309e-08   8.700e-09

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 35.7149       (-21.8169      119.918)
Norm        : 2.24757       (-1.29246     3.36004)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.05 using 59 PHA bins.
# Reduced chi-squared =          1.176 for     57 degrees of freedom 
# Null hypothesis probability =   1.704026e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.951e-09   3.153e-09
25- 50  6.187e-09   4.061e-09
50-150  4.209e-09   3.999e-09
15-150  1.535e-08   1.105e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.18788        (-6.20021      4.9826)
R1^2/D10^2  : 0.931239        (-0.898472      -0.898472)
kT2 [keV]   : 16.5367        (-17.0609      -17.0609)
R2^2/D10^2  : 5.59544E-03    (-0.00450296   -0.00450296)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.81 using 59 PHA bins.
# Reduced chi-squared =          1.196 for     55 degrees of freedom 
# Null hypothesis probability =   1.509708e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.260e-09   4.180e-09
25- 50  6.629e-09   5.595e-09
50-150  3.174e-09   3.045e-09
15-150  1.506e-08   1.299e-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: 2.78118     ( -0.233988   0.256811 )
Norm@50keV  : 6.01583E-04    ( -0.000115804   0.000118123 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.94 using 59 PHA bins.
# Reduced chi-squared =          1.209 for     57 degrees of freedom 
# Null hypothesis probability =   1.335460e-01
 
Photon flux (15-150 keV)    in 128 sec: 0.141792 ( -0.0139504  0.0139511 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.43811e-07 ( -1.02546e-07  1.06765e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.00000     (     )
Epeak [keV] : 50.0000      (   )
Norm@50keV  : 2.62881E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         120.94 using 59 PHA bins.
# Reduced chi-squared =         2.1597 for     56 degrees of freedom 
# Null hypothesis probability =   1.121737e-06
 
Photon flux (15-150 keV)    in 128 sec: 0.133409 ( -0.014458  0.014656 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.11688e-07 ( -8.92698e-08  1.13916e-07 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.696235   ( -1.25817   2.73364 )
beta        : -3.90510    ( 4.08004   1.03323 )
Epeak [keV] : 19.1475      ( -7.68657 2.91685 )
Norm@50keV   : 1.58859E-02    ( -0.0303497   1.35447 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.43 using 59 PHA bins.
# Reduced chi-squared =          1.135 for     55 degrees of freedom 
# Null hypothesis probability =   2.290778e-01
 
Photon flux (15-150 keV)    in 128 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)  = 2.84e-07
S(50-100 keV) = 1.65e-07

T90 vs. Hardness ratio plot

T90                                   = 96 sec.
Hardness ratio (energy fluence ratio) = 0.580986

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 0.798361
Count Ratio (50-100 keV) / (15-25 keV) = 0.0802963

Mask shadow pattern

IMX = 6.032146379186801E-01, IMY = -2.768270523241032E-02

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 128.000000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 128.000000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 128.000000

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:
-68.699410 -15.000000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
163.5268   3.3446    2.8  50.6  152.7   1.1401   4.2 ------	UNKNOWN                       
129.1389  37.3962    2.3  37.2 -140.5   0.4896   5.1 ------	UNKNOWN

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

Time interval of the image:
-15.000000 113.000000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
251.4288  40.4541    2.2  49.4   26.4   3.9357   5.3 ------	UNKNOWN                       
151.1015  17.7083    2.3  40.8  175.3   1.4377   5.0 ------	UNKNOWN                       
235.3466  62.0181    1.6  31.1    2.6   1.6291   7.2 ------	UNKNOWN                       
240.1602  62.9219    2.3  33.2    0.3   1.0873   5.0 ------	UNKNOWN                       
143.0169  16.4109    2.3  45.5 -175.5   1.6429   4.9 ------	UNKNOWN                       
134.3727  13.8430    2.4  52.0 -167.8   2.0863   4.9 ------	UNKNOWN                       
176.8156  79.7554    2.0  27.4  -47.5   1.2492   5.8 ------	UNKNOWN                       
322.7755  74.0217    2.2  51.3  -34.9   3.1257   5.3 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
190.300590 963.070000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.4454  35.3423    1.1  29.2   37.3   5.1957  10.4    0.6	Her X-1                       
299.5966  35.1979    0.3  47.5  -16.3  27.8908  33.3    0.4	Cyg X-1                       
308.0058  41.0752    5.8  46.7  -28.3   1.5824   2.0    8.7	Cyg X-3                       
205.9558  57.4821    2.2  15.3  156.6   1.9839   5.3 ------	UNKNOWN

Plot creation:
Sun May 31 13:29:56 EDT 2015