batgrbproduct analysis for trigger=585834

batgrbproduct Analysis for Trigger=585834

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): Mon Mar  3 23:55:21 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger585834
======================================================================

  Trigger: 00585834      Segment: 000

  BAT Trigger Time: 413363851.776   [s; MET]
      Trigger Stop: 413363852.8   [s; MET]
               UTC: 2014-02-06T07:17:20.165420    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 145.350247125002   Dec: 66.7503930303182  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    18.35
     Image Trigger?:     NO
     Rate S/N Ratio:     52.820450584977  [ if not an image trigger ]
     Image S/N Ratio:    18.35

  Flight Position:   [ source = BAT ]
    RA: 145.350247125002   Dec: 66.7503930303182  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 145.321432651379   Dec: 66.7609958708438  [deg; J2000]  
        { 09h 41m 17.1s , +66d 45' 39.6" }
         +/- 0.690661747345658 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.198550636252018 [arcmin] (formal 1-sigma fit error)
    SNR: 51.6106385954751
 
  Angular difference between Flight and Ground position is 0.932871 arcmin
 
  Partial Coding Fraction: 1    [ including projection effects ]

  Duration
     T90: 94.1879999041557 +/- 18.3610798297631
        Measured from: 1.87999999523163
                   to: 96.0679998993874     [s; relative to TRIGTIME]
     T50: 11.3839999437332 +/- 19.6462154393177
        Measured from: 51.6839999556541
                   to: 63.0679998993874     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 60.8039999604225     
                   to: 61.8039999604225     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -38.3040000200272     
                   to: 256.060000002384     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     7.484973  10.443103   7.999963   1.693059
           0.108077   0.114834   0.103035   0.087529 [error]
 Peak      0.569354   0.969866   0.902770   0.196029
           0.013324   0.017050   0.016707   0.009710 [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 2.28e-06 4.17e-06 5.86e-06 1.73e-05 1.68e-05 2.96e-05   erg/cm2
              Error 8.45e-08 8.87e-08 1.18e-07 8.19e-07 2.95e-07 8.63e-07   erg/cm2
Peak flux Power-law 5.77e+00 6.65e+00 5.51e+00 7.68e+00 2.07e+01 2.56e+01   ph/cm2/s
              Error 2.55e-01 1.80e-01 1.37e-01 4.00e-01 4.93e-01 5.79e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.06e-06 4.23e-06 6.05e-06 1.12e-05 1.64e-05 2.36e-05   erg/cm2
              Error 1.14e-07 9.34e-08 1.39e-07 1.76e-06 3.30e-07 1.78e-06   erg/cm2
Peak flux Cutoff-PL 4.71e+00 6.85e+00 6.01e+00 4.26e+00 1.99e+01 2.18e+01   ph/cm2/s
              Error 3.27e-01 1.97e-01 1.79e-01 5.47e-01 5.15e-01 7.74e-01   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 4.81e+00 6.83e+00 5.96e+00 4.50e+00 2.00e+01 2.21e+01   ph/cm2/s
              Error -------- 2.00e-01 1.86e-01 -------- -------- --------   ph/cm2/s

 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.510    0.033    -      -           6.02e-03 1.04e-04   64.040 57
CPL   1.142    0.143     133.6   34.2      8.71e-03 1.23e-03   43.470 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.271    0.038    -      -           1.74e-01 3.90e-03  100.760 57
CPL   0.536    0.178     115.6   15.1      3.67e-01 6.44e-02   43.200 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: 68.544000 sec.
T50 in the 50-300 keV band: 40.832000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  294.364  -38.304  256.060
T90    94.188    1.880   96.068
T50    11.384   51.684   63.068
Peak    1.000   60.804   61.804

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
  145.3214    66.7610   0.0037     4.2264    40.2147         5.4223765     51.611 TRIG_00585834                 
 
Foreground time interval of the image:
-38.304  11.925 (delta_t =  50.229 [sec])
Background time interval of the image:
-239.776 -38.304 (delta_t = 201.472 [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 1.024000

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 1.024000

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 1.024000

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)

The mask-weighted light curves based on cleaned DPHs

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  -38.304 sec. to  256.060 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.50991     ( -0.0331952   0.0331718 )
Norm@50keV  : 6.02260E-03    ( -0.000103991   0.000103975 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.04 using 59 PHA bins.
# Reduced chi-squared =          1.123 for     57 degrees of freedom 
# Null hypothesis probability =   2.432861e-01
 
Photon flux (15-150 keV)    in 294.4 sec: 0.753878 ( -0.0152383  0.0152925 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.67931e-05 ( -2.94924e-07  2.95039e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from  -38.304 sec. to  256.060 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.14172     ( -0.145486   0.14124 )
Epeak [keV] : 133.610      ( -22.1002 46.2994 )
Norm@50keV  : 8.70879E-03    ( -0.00112313   0.00132938 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.47 using 59 PHA bins.
# Reduced chi-squared =         0.7762 for     56 degrees of freedom 
# Null hypothesis probability =   8.890975e-01
 
Photon flux (15-150 keV)    in 294.4 sec: 0.729527 ( -0.017369  0.017487 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.64111e-05 ( -3.30435e-07  3.29699e-07 ) ergs/cm2

Band function

Time interval is from  -38.304 sec. to  256.060 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.14171   ( -0.124971   0.138905 )
beta        : -10.0000    ( 10   5.32907e-15 )
Epeak [keV] : 133.586      ( -20.8597 46.3051 )
Norm@50keV   : 8.70797E-03    ( -0.00112315   0.00132976 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.47 using 59 PHA bins.
# Reduced chi-squared =         0.7904 for     55 degrees of freedom 
# Null hypothesis probability =   8.691652e-01
 
Photon flux (15-150 keV)    in 294.4 sec: 0.729880 (    ) 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]    : 17.5555  (  )
R^2/D10^2   : 4.73137E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         587.72 using 59 PHA bins.
# Reduced chi-squared =         10.311 for     57 degrees of freedom 
# Null hypothesis probability =   3.428189e-89
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.662e-07   3.415e-08
25- 50  3.931e-06   1.001e-07
50-150  8.734e-06   2.591e-07
15-150  1.353e-05   2.576e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (      )
Norm        : 3.09816       (-0.0532469     0.0532445)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.75 using 59 PHA bins.
# Reduced chi-squared =          1.119 for     57 degrees of freedom 
# Null hypothesis probability =   2.510705e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.272e-06   4.416e-08
25- 50  4.370e-06   8.832e-08
50-150  9.585e-06   1.840e-07
15-150  1.623e-05   3.180e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.85817        (-0.588069      0.618052)
R1^2/D10^2  : 0.466575        (-0.103077      0.143081)
kT2 [keV]   : 27.3739        (-1.6713      2.03459)
R2^2/D10^2  : 8.03098E-03    (-0.00189118   0.00217684)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.38 using 59 PHA bins.
# Reduced chi-squared =         0.9342 for     55 degrees of freedom 
# Null hypothesis probability =   6.137439e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.806e-06   1.186e-07
25- 50  4.302e-06   1.663e-07
50-150  1.010e-05   3.665e-07
15-150  1.621e-05   5.093e-07

Peak spectrum fit

Power-law model

Time interval is from   60.804 sec. to   61.804 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.27101     ( -0.0381589   0.0381467 )
Norm@50keV  : 0.174450    ( -0.0038987   0.00389813 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         100.76 using 59 PHA bins.
# Reduced chi-squared =         1.7677 for     57 degrees of freedom 
# Null hypothesis probability =   3.143668e-04
 
Photon flux (15-150 keV)    in 1 sec: 20.7053 ( -0.492608  0.493212 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.7364e-06 ( -4.09855e-08  4.10173e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   60.804 sec. to   61.804 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.535721     ( -0.180859   0.174347 )
Epeak [keV] : 115.633      ( -12.0208 18.234 )
Norm@50keV  : 0.366541    ( -0.0577349   0.0711554 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.20 using 59 PHA bins.
# Reduced chi-squared =         0.7715 for     56 degrees of freedom 
# Null hypothesis probability =   8.946276e-01
 
Photon flux (15-150 keV)    in 1 sec: 19.9461 ( -0.5141  0.5162 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.69103e-06 ( 0  0 ) ergs/cm2

Band function

Time interval is from   60.804 sec. to   61.804 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.535666   ( -0.167853   0.180349 )
beta        : -10.0000    ( 10   3.55271e-15 )
Epeak [keV] : 115.614      ( -8.19914 18.2104 )
Norm@50keV   : 0.366557    ( -0.0577617   0.0711559 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.20 using 59 PHA bins.
# Reduced chi-squared =         0.7855 for     55 degrees of freedom 
# Null hypothesis probability =   8.753648e-01
 
Photon flux (15-150 keV)    in 1 sec: 20.0419 (    ) 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]    : 19.2440  (  )
R^2/D10^2   : 1.09042  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         268.91 using 59 PHA bins.
# Reduced chi-squared =         4.7178 for     57 degrees of freedom 
# Null hypothesis probability =   3.035141e-29
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.900e-08   3.370e-09
25- 50  3.834e-07   1.255e-08
50-150  1.046e-06   3.650e-08
15-150  1.508e-06   3.650e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (      )
Norm        : 87.6227       (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         241.92 using 59 PHA bins.
# Reduced chi-squared =         4.2443 for     57 degrees of freedom 
# Null hypothesis probability =   1.235371e-24
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.182e-07   5.300e-09
25- 50  4.197e-07   1.025e-08
50-150  9.205e-07   2.200e-08
15-150  1.558e-06   3.750e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.87634        (-1.17669      1.24639)
R1^2/D10^2  : 6.84363        (-2.01856      3.50052)
kT2 [keV]   : 28.2324        (-2.39396      3.31716)
R2^2/D10^2  : 0.239096    (-0.0834236   0.098996)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.22 using 59 PHA bins.
# Reduced chi-squared =         0.9131 for     55 degrees of freedom 
# Null hypothesis probability =   6.574246e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.351e-07   1.280e-08
25- 50  4.026e-07   2.105e-08
50-150  1.148e-06   6.900e-08
15-150  1.686e-06   9.500e-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: 1.33003     ( -0.0540386   0.0539672 )
Norm@50keV  : 6.84022E-03    ( -0.000195761   0.00019576 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.17 using 59 PHA bins.
# Reduced chi-squared =         0.7573 for     57 degrees of freedom 
# Null hypothesis probability =   9.122084e-01
 
Photon flux (15-150 keV)    in 50.23 sec: 0.820740 ( -0.0251106  0.0251658 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.37105e-06 ( -1.04828e-07  1.05064e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.06886     ( -0.224094   0.213291 )
Epeak [keV] : 197.214      ( -65.8306 534.835 )
Norm@50keV  : 8.99423E-03    ( -0.00176027   0.00230544 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          38.76 using 59 PHA bins.
# Reduced chi-squared =         0.6922 for     56 degrees of freedom 
# Null hypothesis probability =   9.616037e-01
 
Photon flux (15-150 keV)    in 50.23 sec: 0.806377 ( -0.027474  0.027528 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.31287e-06 ( -1.16524e-07  1.15876e-07 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.06885   ( -2.4389   4.35401 )
beta        : -10.0000    ( 10   20 )
Epeak [keV] : 197.183      ( -35.2746 533.462 )
Norm@50keV   : 8.99339E-03    ( -0.00176053   0.00230554 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          38.76 using 59 PHA bins.
# Reduced chi-squared =         0.7048 for     55 degrees of freedom 
# Null hypothesis probability =   9.523964e-01
 
Photon flux (15-150 keV)    in 50.23 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)  = 4.17e-06
S(50-100 keV) = 5.86e-06

T90 vs. Hardness ratio plot

T90                                   = 94.1879999041557 sec.
Hardness ratio (energy fluence ratio) = 1.40528

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.39521
Count Ratio (50-100 keV) / (15-25 keV) = 1.0688

Mask shadow pattern

IMX = 5.643112671702254E-02, IMY = -4.771279825754147E-02

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000

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:
-239.776000 -38.304000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
139.9566  78.6544    3.2   9.2  -82.0   0.6840   3.6 ------	UNKNOWN                       
 31.5708  64.5379    2.3  36.2 -130.6   1.4812   5.0 ------	UNKNOWN                       
252.4609  51.3447    3.5  50.5  -39.2   2.6299   3.3 ------	UNKNOWN

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

Time interval of the image:
-38.304000 11.924600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 88.3776  32.9145    3.2  45.2  156.0   0.9394   3.6 ------	UNKNOWN                       
145.3215  66.7610    0.2   4.2   40.2   5.4218  51.6 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
32.524600 782.267900
840.224000 962.356400
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
170.9787  35.0961    2.5  35.0   45.3   5.5405   4.6 ------	UNKNOWN                       
145.3300  66.7543    0.4   0.0 -170.0  21.5634  32.5 ------	UNKNOWN                       
 44.5102  71.5639    2.9  32.0 -132.5   3.8499   4.0 ------	UNKNOWN                       
246.7766  48.5016    4.2  50.5  -39.2   7.5819   2.7 ------	UNKNOWN

Plot creation:
Sat May 30 14:30:17 EDT 2015