batgrbproduct analysis for trigger=111622

batgrbproduct Analysis for Trigger=111622

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 22:41:05 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger111622
======================================================================

  Trigger: 00111622      Segment: 000

  BAT Trigger Time: 132917477.888   [s; MET]
      Trigger Stop: 132917478.912   [s; MET]
               UTC: 2005-03-19T09:31:18.449780    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 154.15754637319   Dec: 43.5655654162315  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    10
     Image Trigger?:     NO
     Rate S/N Ratio:     11.5758369027902  [ if not an image trigger ]
     Image S/N Ratio:    10

  Flight Position:   [ source = BAT ]
    RA: 154.15754637319   Dec: 43.5655654162315  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 154.171746620419   Dec: 43.579716241103  [deg; J2000]  
        { 10h 16m 41.2s , +43d 34' 47.0" }
         +/- 2.51205982073582 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.12454508838936 [arcmin] (formal 1-sigma fit error)
    SNR: 8.15918882486912
 
  Angular difference between Flight and Ground position is 1.049727 arcmin
 
  Partial Coding Fraction: 0.4414062    [ including projection effects ]

  Duration
     T90: 151.584000006318 +/- 10.6441875246452
        Measured from: -133.127999991179
                   to: 18.4560000151396     [s; relative to TRIGTIME]
     T50: 124.548000007868 +/- 3.72483341955902
        Measured from: -120.140000000596
                   to: 4.40800000727177     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.648000001907349     
                   to: 1.64800000190735     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -134.091999992728     
                   to: 27.7719999998808     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.907512   0.927147   0.492187   0.104715
           0.074399   0.077045   0.066716   0.058091 [error]
 Peak      0.050253   0.077711   0.026922   0.004965
           0.007579   0.007794   0.006525   0.005279 [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 2.79e-07 3.93e-07 4.12e-07 7.93e-07 1.33e-06 1.88e-06   erg/cm2
              Error 3.74e-08 3.64e-08 6.47e-08 2.48e-07 1.49e-07 3.17e-07   erg/cm2
Peak flux Power-law 6.51e-01 4.85e-01 2.40e-01 1.69e-01 1.46e+00 1.54e+00   ph/cm2/s
              Error 1.25e-01 6.67e-02 5.27e-02 6.93e-02 2.01e-01 2.13e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.71e-07 4.09e-07 4.08e-07 4.48e-07 1.29e-06 1.54e-06   erg/cm2
              Error 4.07e-08 4.81e-08 6.99e-08 4.23e-07 1.72e-07 4.89e-07   erg/cm2
Peak flux Cutoff-PL 5.48e-01 5.92e-01 2.21e-01 2.12e-02 1.38e+00 1.38e+00   ph/cm2/s
              Error 1.54e-01 1.12e-01 8.02e-02 5.04e-02 2.12e-01 2.16e-01   ph/cm2/s
 
Fluence        Band 2.71e-07 4.12e-07 3.91e-07 6.56e-07 1.30e-06 1.74e-06   erg/cm2
              Error -------- -------- -------- -------- 1.53e-07 --------   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    1.934    0.174    -      -           8.95e-04 1.02e-04   43.320 57
CPL   1.624    0.655      51.4   -3.1      1.35e-03 1.46e-03   42.630 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.014    0.242    -      -           9.64e-03 1.63e-03   43.190 57
CPL   0.108    2.096      40.0   10.5      1.26e-01 2.87e+00   37.680 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: 139.904000 sec.
T50 in the 50-300 keV band: 120.576000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  161.864 -134.092   27.772
T90   151.584 -133.128   18.456
T50   124.548 -120.140    4.408
Peak    1.000    0.648    1.648

Click here for the BAT GCN circular template

Image

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

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
  154.1717    43.5797   0.0236    37.0839   158.0771         0.9717634      8.159 TRIG_00111622                 
 
Foreground time interval of the image:
-66.187  10.413 (delta_t =  76.600 [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

8 ms binning

From T100_start-3 s to T100_start+3 s

2 ms binning

From T100_start-1 s to T100_start+1 s

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 -134.092 sec. to   27.772 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.93441     ( -0.170734   0.178265 )
Norm@50keV  : 8.95013E-04    ( -0.000103162   0.000101053 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.32 using 59 PHA bins.
# Reduced chi-squared =         0.7599 for     57 degrees of freedom 
# Null hypothesis probability =   9.094769e-01
 
Photon flux (15-150 keV)    in 161.9 sec: 0.130361 ( -0.0120901  0.0120933 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.33293e-06 ( -1.47429e-07  1.50016e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from -134.092 sec. to   27.772 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.62412     ( -0.736159   0.572953 )
Epeak [keV] : 51.4015      ( -45.2308 -51.4015 )
Norm@50keV  : 1.34851E-03    ( -0.000706353   0.00220515 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.63 using 59 PHA bins.
# Reduced chi-squared =         0.7613 for     56 degrees of freedom 
# Null hypothesis probability =   9.059604e-01
 
Photon flux (15-150 keV)    in 161.9 sec: 0.128784 ( -0.012493  0.012486 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.28988e-06 ( -1.70084e-07  1.73165e-07 ) ergs/cm2

Band function

Time interval is from -134.092 sec. to   27.772 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.64619   ( 1.64629   0.635129 )
beta        : -4.54514    ( 9.00489   19.0049 )
Epeak [keV] : 52.7427      ( -22.0538 168.973 )
Norm@50keV   : 1.30542E-03    ( -0.000120351   0.000280492 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.64 using 59 PHA bins.
# Reduced chi-squared =         0.7752 for     55 degrees of freedom 
# Null hypothesis probability =   8.880346e-01
 
Photon flux (15-150 keV)    in 161.9 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.29804e-06 ( -1.29691e-06  -1.51299e-07 ) ergs/cm2

Single BB

 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 9.91502  (-1.15687  1.33453)
R^2/D10^2   : 6.18738E-02  (-0.023569   0.0377024)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          70.41 using 59 PHA bins.
# Reduced chi-squared =          1.235 for     57 degrees of freedom 
# Null hypothesis probability =   1.092097e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.000e-07   3.223e-08
25- 50  4.912e-07   5.602e-08
50-150  2.501e-07   5.950e-08
15-150  9.413e-07   1.152e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 74.8173       (-19.9821      33.1085)
Norm        : 0.624489       (-0.0877375     0.107039)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.15 using 59 PHA bins.
# Reduced chi-squared =         0.7571 for     57 degrees of freedom 
# Null hypothesis probability =   9.124572e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.610e-07   3.359e-08
25- 50  4.226e-07   4.015e-08
50-150  5.697e-07   1.497e-07
15-150  1.253e-06   1.788e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.96500        (-1.30513      1.45468)
R1^2/D10^2  : 0.319821        (-0.171998      0.271745)
kT2 [keV]   : 21.9546        (-5.89125      12.1833)
R2^2/D10^2  : 2.16435E-03    (-0.0017158   0.00303864)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.00 using 59 PHA bins.
# Reduced chi-squared =         0.7455 for     55 degrees of freedom 
# Null hypothesis probability =   9.196995e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.740e-07   1.053e-07
25- 50  4.042e-07   1.129e-07
50-150  6.164e-07   3.308e-07
15-150  1.295e-06   4.808e-07

Peak spectrum fit

Power-law model

Time interval is from    0.648 sec. to    1.648 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.01377     ( -0.233161   0.250796 )
Norm@50keV  : 9.63875E-03    ( -0.00165251   0.00161208 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.19 using 59 PHA bins.
# Reduced chi-squared =         0.7577 for     57 degrees of freedom 
# Null hypothesis probability =   9.117897e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.45506 ( -0.200839  0.200892 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.89579e-08 ( -1.41894e-08  1.44878e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    0.648 sec. to    1.648 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.107727     ( -2.71378   1.4775 )
Epeak [keV] : 40.0126      ( -8.6513 12.3709 )
Norm@50keV  : 0.126398    ( -0.128523   5.61912 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          37.68 using 59 PHA bins.
# Reduced chi-squared =         0.6728 for     56 degrees of freedom 
# Null hypothesis probability =   9.714293e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.38043 ( -0.2137  0.21048 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.71911e-08 ( -1.49249e-08  1.6601e-08 ) ergs/cm2

Band function

Time interval is from    0.648 sec. to    1.648 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 1.63098   ( -3.45286   -2.41301 )
beta        : -3.01654    ( -6.60683   0.734002 )
Epeak [keV] : 36.1674      ( -5.19116 10.4961 )
Norm@50keV   : 1.65930    ( -1.58755   100.776 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          35.70 using 59 PHA bins.
# Reduced chi-squared =         0.6491 for     55 degrees of freedom 
# Null hypothesis probability =   9.797363e-01
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.04642e-08 ( 0  0 ) ergs/cm2

Single BB

 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 9.82563  (-1.21878  1.41588)
R^2/D10^2   : 0.767987  (-0.314149   0.510999)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          39.01 using 59 PHA bins.
# Reduced chi-squared =         0.6845 for     57 degrees of freedom 
# Null hypothesis probability =   9.670696e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.501e-08   3.440e-09
25- 50  3.639e-08   5.950e-09
50-150  1.804e-08   6.205e-09
15-150  6.943e-08   1.274e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 62.5187       (-19.4435      34.262)
Norm        : 7.61373       (-1.52718     1.86788)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          39.33 using 59 PHA bins.
# Reduced chi-squared =         0.6900 for     57 degrees of freedom 
# Null hypothesis probability =   9.641616e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.926e-08   3.470e-09
25- 50  2.967e-08   4.405e-09
50-150  3.492e-08   1.262e-08
15-150  8.385e-08   1.780e-08

Double BB

------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 1.03045E-04        (      )
R1^2/D10^2  : 3.76637E+05        (-376636      -376636)
kT2 [keV]   : 9.82554        (-1.21869      1.41597)
R2^2/D10^2  : 0.768014    (-0.314177   0.510973)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          39.09 using 59 PHA bins.
#Fit statistic : Chi-Squared =          39.01 using 59 PHA bins.
# Reduced chi-squared =         0.7107 for     55 degrees of freedom 
# Reduced chi-squared =         0.7094 for     55 degrees of freedom 
# Null hypothesis probability =   9.483900e-01
# Null hypothesis probability =   9.492902e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.558e-08   3.960e-09
25- 50  3.627e-08   7.175e-09
50-150  1.659e-08   6.812e-09
15-150  6.844e-08   1.279e-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: 1.91383     ( -0.320772   0.347151 )
Norm@50keV  : 7.54408E-04    ( -0.000171119   0.000164701 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.58 using 59 PHA bins.
# Reduced chi-squared =         0.9224 for     57 degrees of freedom 
# Null hypothesis probability =   6.415593e-01
 
Photon flux (15-150 keV)    in 76.6 sec: 0.108907 ( -0.0197142  0.0197178 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.31369e-07 ( -1.14424e-07  1.18104e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.66093     ( -1.70974   0.528793 )
Epeak [keV] : 55.0298      (   )
Norm@50keV  : 1.06438E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.47 using 59 PHA bins.
# Reduced chi-squared =         0.9369 for     56 degrees of freedom 
# Null hypothesis probability =   6.094161e-01
 
Photon flux (15-150 keV)    in 76.6 sec: 0.108090 ( -0.0201858  0.020064 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.16637e-07 ( -1.36114e-07  1.30078e-07 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.96208   ( -4.96208   -4.96208 )
beta        : -2.15830    ( -0.590675   0.415868 )
Epeak [keV] : 23.7096      ( -23.7096 5.18639 )
Norm@50keV   : 160.586    ( -28.5788   764887 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.06 using 59 PHA bins.
# Reduced chi-squared =         0.9101 for     55 degrees of freedom 
# Null hypothesis probability =   6.635484e-01
 
Photon flux (15-150 keV)    in 76.6 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)  = 3.93e-07
S(50-100 keV) = 4.12e-07

T90 vs. Hardness ratio plot

T90                                   = 151.584000006318 sec.
Hardness ratio (energy fluence ratio) = 1.04835

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.02164
Count Ratio (50-100 keV) / (15-25 keV) = 0.542348

Mask shadow pattern

IMX = -7.011950019389600E-01, IMY = -2.822039830821212E-01

TIME vs. PHA plot around the trigger time

TIME vs. DetID plot around the trigger time

100 us light curve (15-350 keV)

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:
-66.187400 10.412590
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.4622  35.2013    7.3  36.2  -30.8   0.1558   1.6    8.5	Her X-1                       
136.5976  34.8508    2.6  53.2  158.3   1.6849   4.4 ------	UNKNOWN                       
154.1718  43.5797    1.4  37.1  158.1   0.9719   8.2 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
73.212590 302.190600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
129.7299   4.2509    2.2  44.9  159.9   1.6121   5.2 ------	UNKNOWN                       
147.5580  60.8374    2.3  17.7  -66.4   0.7077   5.0 ------	UNKNOWN                       
260.7839  68.6823    2.5  55.5  -30.8   3.4357   4.7 ------	UNKNOWN                       
 90.6534  23.6796    3.3  55.0 -145.2   3.1230   3.5 ------	UNKNOWN                       
 89.6736  70.2115    2.9  41.0  -83.6   2.5209   4.0 ------	UNKNOWN

Plot creation:
Sun May 31 17:17:33 EDT 2015