batgrbproduct analysis for trigger=1205708

batgrbproduct Analysis for Trigger=1205708

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 v2.48
    Process Start Time (local time): Sat Mar  9 14:12:09 EST 2024
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1205708
======================================================================

  Trigger: 01205708      Segment: 000

  BAT Trigger Time: 725811649.984   [s; MET]
      Trigger Stop: 725811654.08   [s; MET]
               UTC: 2024-01-01T14:20:17.331180    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 10.3487970738741   Dec: 8.52564743491041  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.07
     Image Trigger?:     NO
     Rate S/N Ratio:     11.1803398874989  [ if not an image trigger ]
     Image S/N Ratio:    8.07

  Flight Position:   [ source = BAT ]
    RA: 10.3487970738741   Dec: 8.52564743491041  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 10.3246418468843   Dec: 8.53420238988818  [deg; J2000]  
        { 00h 41m 17.9s , +08d 32' 03.1" }
         +/- 2.20362004519782 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.05387989399937 [arcmin] (formal 1-sigma fit error)
    SNR: 9.83836824361692
 
  Angular difference between Flight and Ground position is 1.522423 arcmin
 
  Partial Coding Fraction: 0.6640625    [ including projection effects ]

  Duration
     T90: 16.4160000085831 +/- 3.3911319061966
        Measured from: -4
                   to: 12.4160000085831     [s; relative to TRIGTIME]
     T50: 7.88800001144409 +/- 2.47954844283121
        Measured from: -0.351999998092651
                   to: 7.53600001335144     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 2.10000002384186     
                   to: 3.10000002384186     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -5.0239999294281     
                   to: 13.5520000457764     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.248173   0.302174   0.100270   0.015886
           0.034946   0.035960   0.030703   0.027018 [error]
 Peak      0.040495   0.044915   0.014745  -0.004981
           0.008637   0.008726   0.007554   0.006482 [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 9.01e-08 1.15e-07 1.07e-07 1.76e-07 3.72e-07 4.89e-07   erg/cm2
              Error 1.71e-08 1.73e-08 2.82e-08 8.85e-08 6.63e-08 1.24e-07   erg/cm2
Peak flux Power-law 4.44e-01 3.12e-01 1.44e-01 9.29e-02 9.45e-01 9.93e-01   ph/cm2/s
              Error 1.33e-01 7.38e-02 5.82e-02 6.95e-02 2.18e-01 2.34e-01   ph/cm2/s
 
Fluence   Cutoff-PL 8.12e-08 1.39e-07 8.97e-08 1.58e-08 3.23e-07 3.25e-07   erg/cm2
              Error 1.97e-08 2.65e-08 3.81e-08 5.02e-08 6.69e-08 8.45e-08   erg/cm2
Peak flux Cutoff-PL 3.92e-01 3.77e-01 1.36e-01 1.52e-02 9.18e-01 9.20e-01   ph/cm2/s
              Error 1.52e-01 1.05e-01 7.22e-02 5.77e-02 2.17e-01 2.20e-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    2.100    0.269    -      -           2.15e-03 4.20e-04   53.760 57
CPL   0.393    1.711      36.3   13.3      2.32e-02 2.06e-01   49.190 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.115    0.426    -      -           5.96e-03 1.87e-03   40.740 57
CPL   0.491    2.192      37.2    0.0      5.50e-02 1.31e+00   38.290 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   18.576   -5.024   13.552
T90    16.416   -4.000   12.416
T50     7.888   -0.352    7.536
Peak    1.000    2.100    3.100

Click here for the BAT GCN circular template

Estimated redshift from machine learning (Ukwatta et al. 2016) - may take a few minute to calcaulte

Image

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

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
   10.3246     8.5342   0.0194    33.5211  -145.2458         0.6807146      9.838 TRIG_01205708                 
 
Foreground time interval of the image:
 -5.024  13.552 (delta_t =  18.576 [sec])
Background time interval of the image:
-239.984  -5.024 (delta_t = 234.960 [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   -5.024 sec. to   13.552 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.10022     ( -0.256778   0.280556 )
Norm@50keV  : 2.15387E-03    ( -0.000424825   0.000414255 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   53.76     using 59 bins.
 Reduced chi-squared = 0.943158
# Null hypothesis probability of 5.97e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 18.58 sec: 0.338924 ( -0.04931  0.04931 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.71908e-07 ( -6.53271e-08  6.73557e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -5.024 sec. to   13.552 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.392967     ( -2.01188   1.41015 )
Epeak [keV] : 36.3138      ( -15.5492 11.1418 )
Norm@50keV  : 2.31846E-02    ( -0.0237078   0.388397 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   49.19     using 59 bins.
 Reduced chi-squared = 0.878393
# Null hypothesis probability of 7.28e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 18.58 sec: 0.324691 ( -0.049982  0.050276 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.23725e-07 ( -6.12573e-08  7.25675e-08 ) ergs/cm2

Band function

Time interval is from   -5.024 sec. to   13.552 sec.
 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       :    (     )
beta        :     (     )
Epeak [keV] :       (   )
Norm@50keV   :     (     )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in  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]    : 9.30278  (-1.2867  1.48288)
R^2/D10^2   : 0.217138  (-0.0955652   0.169935)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   51.80     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 6.70e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.908e-08   1.790e-08
25- 50  1.545e-07   3.405e-08
50-150  6.516e-08   2.398e-08
15-150  2.888e-07   5.425e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 52.4751       (-16.3871      29.4745)
Norm        : 1.90380       (-0.408411     0.54945)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   50.26     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 7.24e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.741e-08   1.593e-08
25- 50  1.277e-07   2.270e-08
50-150  1.296e-07   5.825e-08
15-150  3.447e-07   7.674e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 3.69714        (-3.69701      -3.69701)
R1^2/D10^2  : 2.98433        (-2.98473      -2.98473)
kT2 [keV]   : 10.8974        (-1.8812      188.75)
R2^2/D10^2  : 0.102094    (-0.102101   0.187551)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   49.21     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 6.95e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.096e-08   4.008e-08
25- 50  1.410e-07   7.811e-08
50-150  8.747e-08   5.437e-08
15-150  3.094e-07   1.577e-07

Peak spectrum fit

Power-law model

Time interval is from    2.100 sec. to    3.100 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.11461     ( -0.394339   0.458132 )
Norm@50keV  : 5.96207E-03    ( -0.00189705   0.00183537 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   40.74     using 59 bins.
 Reduced chi-squared = 0.714737
# Null hypothesis probability of 9.49e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 0.944888 ( -0.218372  0.218382 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.54843e-08 ( -1.54115e-08  1.62274e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    2.100 sec. to    3.100 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.491260     ( -2.74402   1.64062 )
Epeak [keV] : 37.2049      ( -37.2078 -37.2078 )
Norm@50keV  : 5.49764E-02    ( -0.0549967   2.55923 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   38.29     using 59 bins.
 Reduced chi-squared = 0.68375
# Null hypothesis probability of 9.66e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 0.918089 ( -0.216553  0.218011 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.00587e-08 ( -1.38269e-08  1.62942e-08 ) ergs/cm2

Band function

Time interval is from    2.100 sec. to    3.100 sec.
 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       :    (     )
beta        :     (     )
Epeak [keV] :       (   )
Norm@50keV   :     (     )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in  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]    : 9.62491  (-2.12411  2.66647)
R^2/D10^2   : 0.537350  (-0.331074   0.863176)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   40.05     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 9.57e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.995e-09   4.449e-09
25- 50  2.352e-08   9.245e-09
50-150  1.098e-08   6.297e-09
15-150  4.449e-08   1.863e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 52.2615       (-22.5481      55.2204)
Norm        : 5.35524       (-1.67789     2.55946)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   38.81     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 9.69e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.322e-08   5.300e-09
25- 50  1.929e-08   7.701e-09
50-150  1.951e-08   1.402e-08
15-150  5.202e-08   2.317e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.02788        (-4.02684      195.279)
R1^2/D10^2  : 7.47058        (-7.47841      -7.47841)
kT2 [keV]   : 12.2726        (-3.86214      -12.2715)
R2^2/D10^2  : 0.172313    (-0.172387   0.664441)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   37.94     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 9.61e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.252e-08   6.410e-09
25- 50  2.035e-08   1.149e-08
50-150  1.636e-08   1.005e-08
15-150  4.923e-08   2.552e-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: 2.10022     ( -0.256778   0.280556 )
Norm@50keV  : 2.15387E-03    ( -0.000424825   0.000414255 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   53.76     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 5.97e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 18.58 sec: 0.338895 ( -0.0493052  0.0493056 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.71849e-07 ( -6.52669e-08  6.73943e-08 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.376707     ( -2.0054   1.41662 )
Epeak [keV] : 36.3181      ( -15.545 11.1409 )
Norm@50keV  : 2.37336E-02    ( -0.0237431   0.388807 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   49.19     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 7.28e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 18.58 sec: 0.324634 ( -0.049962  0.050256 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.23803e-07 ( -6.13419e-08  7.25846e-08 ) ergs/cm2

Band function

 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       :    (     )
beta        :     (     )
Epeak [keV] :       (   )
Norm@50keV   :     (     )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in  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) = 1.07e-07

T90 vs. Hardness ratio plot

T90                                   = 16.4160000085831 sec.
Hardness ratio (energy fluence ratio) = 0.930435

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.21759
Count Ratio (50-100 keV) / (15-25 keV) = 0.404033

Mask shadow pattern

IMX = -5.442445568205163E-01, IMY = 3.776147829377905E-01

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:
-239.984000 -5.024000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
309.2285  88.3690    2.4  50.6    4.1   3.1761   4.9 ------	UNKNOWN                       
 30.6880  51.2084    2.7  12.6   20.3   1.4245   4.2 ------	UNKNOWN                       
 21.6844   1.8683    2.0  37.4 -167.0   2.5904   5.8 ------	UNKNOWN                       
326.6360  41.2354    3.1  44.4  -61.2   5.2549   3.7 ------	UNKNOWN                       
354.3110   0.4382    2.3  48.2 -129.3   7.9109   4.9  342.3	UNKNOWN

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

Time interval of the image:
-5.024000 13.552000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 17.7486  10.4032    2.0  29.5 -157.6   0.3182   5.7 ------	UNKNOWN                       
 10.3246   8.5342    1.2  33.5 -145.2   0.6804   9.8 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
112.116600 962.040400
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
326.2573  38.4158    2.9  49.6  -22.6  -9.5056  -4.0    6.9	Cyg X-2                       
 11.5637 -17.5508    2.9  26.1 -159.5   4.6536   4.0 ------	UNKNOWN

Plot creation:
Sat Mar  9 15:19:09 EST 2024