batgrbproduct analysis for trigger=636005

batgrbproduct Analysis for Trigger=636005

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): Tue May  5 19:50:46 EDT 2015
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger636005
======================================================================

  Trigger: 00636005      Segment: 000

  BAT Trigger Time: 448823134.848   [s; MET]
      Trigger Stop: 448823147.008   [s; MET]
               UTC: 2015-03-23T17:05:21.499240    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 192.612689304227   Dec: 50.1982572072614  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.46
     Image Trigger?:     NO
     Rate S/N Ratio:     10.7238052947636  [ if not an image trigger ]
     Image S/N Ratio:    7.46

  Flight Position:   [ source = BAT ]
    RA: 192.612689304227   Dec: 50.1982572072614  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 192.624090644467   Dec: 50.1686282711958  [deg; J2000]  
        { 12h 50m 29.8s , +50d 10' 07.1" }
         +/- 2.43594594882257 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.38034333208073 [arcmin] (formal 1-sigma fit error)
    SNR: 8.52581738827304
 
  Angular difference between Flight and Ground position is 1.830908 arcmin
 
  Partial Coding Fraction: 0.2695312    [ including projection effects ]

  Duration
     T90: 159.664000034332 +/- 44.6175204970225
        Measured from: -21.0799999833107
                   to: 138.584000051022     [s; relative to TRIGTIME]
     T50: 32.8000000715256 +/- 97.9207581678675
        Measured from: -12.3280000090599
                   to: 20.4720000624657     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 5.98000001907349     
                   to: 6.98000001907349     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -23.2879999876022     
                   to: 166.472000002861     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.748279   0.935214   0.429171   0.148731
           0.129377   0.135733   0.120905   0.114502 [error]
 Peak      0.045049   0.043338   0.020361   0.011641
           0.012136   0.013102   0.011311   0.009960 [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 2.78e-07 3.92e-07 4.10e-07 7.88e-07 1.33e-06 1.87e-06   erg/cm2
              Error 6.54e-08 6.66e-08 1.14e-07 4.33e-07 2.68e-07 5.60e-07   erg/cm2
Peak flux Power-law 4.65e-01 3.52e-01 1.78e-01 1.29e-01 1.05e+00 1.12e+00   ph/cm2/s
              Error 2.06e-01 1.15e-01 8.99e-02 1.45e-01 3.44e-01 3.68e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.32e-07 4.81e-07 3.76e-07 7.73e-08 1.15e-06 1.17e-06   erg/cm2
              Error 8.10e-08 1.02e-07 1.39e-07 2.71e-07 2.62e-07 3.77e-07   erg/cm2
Peak flux Cutoff-PL 3.76e-01 4.49e-01 1.64e-01 1.20e-02 9.99e-01 1.00e+00   ph/cm2/s
              Error 3.13e-01 1.71e-01 1.11e-01 1.10e-01 3.46e-01 3.42e-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    1.937    0.303    -      -           7.61e-04 1.57e-04   68.140 57
CPL   0.036    1.962      43.3   18.8      9.23e-03 7.78e-02   64.420 56
 
The chi2 of BB fit is -------- which shows a significant improvement in the fit over a PL.
Check the BB fit.
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.983    0.582    -      -           7.09e-03 2.82e-03   52.630 57
CPL  -0.310    3.754      40.7    0.0      1.54e-01 0.00e+00   50.990 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  189.760  -23.288  166.472
T90   159.664  -21.080  138.584
T50    32.800  -12.328   20.472
Peak    1.000    5.980    6.980

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
  192.6241    50.1686   0.0225    45.4984    16.2459         2.3603968      8.526 TRIG_00636005                 
 
Foreground time interval of the image:
-23.288  58.853 (delta_t =  82.141 [sec])
Background time interval of the image:
-122.947 -23.288 (delta_t =  99.659 [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 12.160000

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 12.160000

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 12.160000

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  -23.288 sec. to  166.472 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.93695     ( -0.290407   0.316095 )
Norm@50keV  : 7.61238E-04    ( -0.000159675   0.000154843 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.14 using 59 PHA bins.
# Reduced chi-squared =          1.195 for     57 degrees of freedom 
# Null hypothesis probability =   1.483934e-01
 
Photon flux (15-150 keV)    in 189.8 sec: 0.111000 ( -0.018777  0.0187827 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.32917e-06 ( -2.64008e-07  2.72143e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from  -23.288 sec. to  166.472 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 3.64993E-02     ( -2.23472   1.6891 )
Epeak [keV] : 43.2513      ( -14.8368 22.8165 )
Norm@50keV  : 9.23177E-03    ( -0.00936548   0.146166 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.42 using 59 PHA bins.
# Reduced chi-squared =          1.150 for     56 degrees of freedom 
# Null hypothesis probability =   2.056426e-01
 
Photon flux (15-150 keV)    in 189.8 sec: 0.104341 ( -0.0194949  0.019595 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.15446e-06 ( -2.37455e-07  2.87277e-07 ) ergs/cm2

Band function

Time interval is from  -23.288 sec. to  166.472 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 3.34803E-02   ( -1.69612   2.09209 )
beta        : -3.80620    ( 3.93335   1.88131 )
Epeak [keV] : 43.5940      ( -10.4304 11.153 )
Norm@50keV   : 9.90975E-03    ( -0.00548157   0.133755 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.23 using 59 PHA bins.
# Reduced chi-squared =          1.168 for     55 degrees of freedom 
# Null hypothesis probability =   1.846623e-01
 
Photon flux (15-150 keV)    in 189.8 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]    : 11.0889  (-1.67237  1.92759)
R^2/D10^2   : 3.72699E-02  (-0.0171569   0.0317022)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.65 using 59 PHA bins.
# Reduced chi-squared =          1.152 for     57 degrees of freedom 
# Null hypothesis probability =   2.020054e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.820e-07   5.321e-08
25- 50  5.201e-07   1.391e-07
50-150  3.634e-07   1.391e-07
15-150  1.066e-06   2.609e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 69.7450       (-26.4205      60.2071)
Norm        : 0.554053       (-0.128273     0.166112)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.91 using 59 PHA bins.
# Reduced chi-squared =          1.156 for     57 degrees of freedom 
# Null hypothesis probability =   1.960140e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.697e-07   6.703e-08
25- 50  4.287e-07   1.093e-07
50-150  5.491e-07   3.112e-07
15-150  1.247e-06   3.955e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 3.11027        (-2.98032      4.02874)
R1^2/D10^2  : 2.45193        (-2.41262      -2.45194)
kT2 [keV]   : 12.3905        (-2.20433      2.79982)
R2^2/D10^2  : 2.22921E-02    (-0.014323   0.0224365)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.29 using 59 PHA bins.
# Reduced chi-squared =          1.133 for     55 degrees of freedom 
# Null hypothesis probability =   2.328112e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.462e-07   1.219e-07
25- 50  4.675e-07   2.670e-07
50-150  4.238e-07   2.587e-07
15-150  1.137e-06   6.026e-07

Peak spectrum fit

Power-law model

Time interval is from    5.980 sec. to    6.980 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.98287     ( -0.536628   0.627277 )
Norm@50keV  : 7.08582E-03    ( -0.00288411   0.00275176 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.63 using 59 PHA bins.
# Reduced chi-squared =         0.9233 for     57 degrees of freedom 
# Null hypothesis probability =   6.396153e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.05459 ( -0.343416  0.343734 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.52944e-08 ( -2.42124e-08  2.55041e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    5.980 sec. to    6.980 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -0.310138     ( -4.80524   2.70189 )
Epeak [keV] : 40.7198      (   )
Norm@50keV  : 0.153769    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.99 using 59 PHA bins.
# Reduced chi-squared =         0.9105 for     56 degrees of freedom 
# Null hypothesis probability =   6.646420e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.999123 ( -0.3431  0.347927 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.6215e-08 ( -2.00975e-08  2.63689e-08 ) ergs/cm2

Band function

Time interval is from    5.980 sec. to    6.980 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.135739   ( 0.313731   0.313731 )
beta        : -8.81635    ( 6.51978   15.5841 )
Epeak [keV] : 40.8075      ( -40.8039 21.0793 )
Norm@50keV   : 0.123663    ( -0.065671   725.811 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.00 using 59 PHA bins.
# Reduced chi-squared =         0.9272 for     55 degrees of freedom 
# Null hypothesis probability =   6.283003e-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]    : 10.6147  (-2.92954  3.68255)
R^2/D10^2   : 0.425859  (-0.425859   1.00685)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.22 using 59 PHA bins.
# Reduced chi-squared =         0.8985 for     57 degrees of freedom 
# Null hypothesis probability =   6.908499e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.946e-09   6.295e-09
25- 50  2.684e-08   1.625e-08
50-150  1.661e-08   1.210e-08
15-150  5.339e-08   3.373e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 62.1397       (-34.2812      -62.1397)
Norm        : 5.57079       (-2.24848     3.86268)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.73 using 59 PHA bins.
# Reduced chi-squared =         0.9076 for     57 degrees of freedom 
# Null hypothesis probability =   6.723480e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.408e-08   8.805e-09
25- 50  2.165e-08   1.345e-08
50-150  2.536e-08   2.044e-08
15-150  6.109e-08   4.099e-08

Double BB

------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 3.98532        (-3.83769      51.3463)
R1^2/D10^2  : 6.02898        (      )
kT2 [keV]   : 11.9569        (-11.9361      -11.9361)
R2^2/D10^2  : 0.237502    (-0.238472   0.983344)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.63 using 59 PHA bins.
#Fit statistic : Chi-Squared =          50.62 using 59 PHA bins.
# Reduced chi-squared =         0.9205 for     55 degrees of freedom 
# Reduced chi-squared =         0.9203 for     55 degrees of freedom 
# Null hypothesis probability =   6.422645e-01
# Null hypothesis probability =   6.427035e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.261e-08   6.880e-09
25- 50  2.416e-08   1.353e-08
50-150  1.990e-08   1.398e-08
15-150  5.668e-08   3.222e-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: 1.82960     ( -0.271996   0.287268 )
Norm@50keV  : 1.56423E-03    ( -0.00029819   0.000292431 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.78 using 59 PHA bins.
# Reduced chi-squared =          1.154 for     57 degrees of freedom 
# Null hypothesis probability =   1.990479e-01
 
Photon flux (15-150 keV)    in 82.14 sec: 0.218066 ( -0.0367765  0.0368231 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.1819e-06 ( -2.23367e-07  2.28562e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.24540     ( -2.83868   1.95689 )
Epeak [keV] : 44.5162      ( -6.37103 9.82916 )
Norm@50keV  : 8.23757E-02    ( -0.0930654   2.78334 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.38 using 59 PHA bins.
# Reduced chi-squared =          1.025 for     56 degrees of freedom 
# Null hypothesis probability =   4.236989e-01
 
Photon flux (15-150 keV)    in 82.14 sec: 0.197168 ( -0.03807  0.038458 ) ph/cm2/s
Energy fluence (15-150 keV)             : 9.66862e-07 ( -1.87019e-07  2.19757e-07 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 1.43803   ( -1.95396   2.78614 )
beta        : -4.50516    ( 4.5982   2.24264 )
Epeak [keV] : 45.1091      ( -7.33603 7.2468 )
Norm@50keV   : 0.100607    ( -0.0877602   2.8892 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.14 using 59 PHA bins.
# Reduced chi-squared =          1.039 for     55 degrees of freedom 
# Null hypothesis probability =   3.957131e-01
 
Photon flux (15-150 keV)    in 82.14 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)  = 3.92e-07
S(50-100 keV) = 4.10e-07

T90 vs. Hardness ratio plot

T90                                   = 159.664000034332 sec.
Hardness ratio (energy fluence ratio) = 1.04592

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.24982
Count Ratio (50-100 keV) / (15-25 keV) = 0.573544

Mask shadow pattern

IMX = 9.769203130013407E-01, IMY = -2.846699612720374E-01

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 12.160000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 12.160000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 12.160000

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:
-122.947400 -23.288000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
213.6915  33.7835    3.3  46.6   47.7   1.8281   3.5 ------	UNKNOWN                       
157.9344  10.7285    2.2  13.4  -81.3   0.5681   5.2 ------	UNKNOWN

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

Time interval of the image:
-23.288000 58.852600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
192.6241  50.1686    1.4  45.5   16.2   2.3605   8.5 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
157.652600 962.190800
1913.152000 2000.000000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.2955  35.4016   45.8  46.2  -18.5   0.1929   0.3    8.7	Her X-1                       
240.0152  40.2195    2.8  34.2  -14.4   1.9554   4.2 ------	UNKNOWN                       
232.4179  51.5339    2.0  24.8  -31.3   2.0281   5.8 ------	UNKNOWN                       
242.7814  44.9460    2.5  33.6  -23.5   2.0807   4.6 ------	UNKNOWN                       
282.6619  80.7078    3.5  40.7  -88.3   7.3266   3.2 ------	UNKNOWN

Plot creation:
Thu May 28 13:03:32 EDT 2015