batgrbproduct analysis for trigger=1207446

batgrbproduct Analysis for Trigger=1207446

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 14:06:46 EST 2024
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1207446
======================================================================

  Trigger: 01207446      Segment: 000

  BAT Trigger Time: 726465727.824   [s; MET]
      Trigger Stop: 726465727.888   [s; MET]
               UTC: 2024-01-09T04:01:35.126280    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 301.317618087209   Dec: 16.5775370553961  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.22
     Image Trigger?:     NO
     Rate S/N Ratio:     19.2613602842582  [ if not an image trigger ]
     Image S/N Ratio:    7.22

  Flight Position:   [ source = BAT ]
    RA: 301.317618087209   Dec: 16.5775370553961  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 301.323643103237   Dec: 16.5400011479405  [deg; J2000]  
        { 20h 05m 17.7s , +16d 32' 24.0" }
         +/- 2.66294772947187 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.39407782174155 [arcmin] (formal 1-sigma fit error)
    SNR: 7.50684524818236
 
  Angular difference between Flight and Ground position is 2.278655 arcmin
 
  Partial Coding Fraction: 0.6796875    [ including projection effects ]

  Duration
     T90: 0.0800000429153442 +/- 0.0357770535203468
        Measured from: 0
                   to: 0.0800000429153442     [s; relative to TRIGTIME]
     T50: 0.0479999780654907 +/- 0.0226274628537407
        Measured from: 0.0160000324249268
                   to: 0.0640000104904175     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.444000005722046     
                   to: 0.555999994277954     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 0.0959999561309814     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.009025   0.017478   0.021543   0.004242
           0.003113   0.003729   0.003662   0.002303 [error]
 Peak      0.016911   0.035879   0.032511   0.003604
           0.008143   0.008397   0.007512   0.005826 [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 3.48e-09 4.96e-09 5.27e-09 1.04e-08 1.70e-08 2.41e-08   erg/cm2
              Error 1.20e-09 1.30e-09 1.70e-09 6.00e-09 4.55e-09 8.22e-09   erg/cm2
Peak flux Power-law 1.99e-01 2.27e-01 1.85e-01 2.53e-01 7.03e-01 8.64e-01   ph/cm2/s
              Error 9.39e-02 6.79e-02 5.76e-02 1.64e-01 1.91e-01 2.38e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.34e-09 8.11e-09 7.35e-09 9.15e-10 1.86e-08 1.87e-08   erg/cm2
              Error 1.38e-09 2.09e-09 2.74e-09 1.26e-09 4.50e-09 4.55e-09   erg/cm2
Peak flux Cutoff-PL 1.75e-01 2.41e-01 1.97e-01 1.25e-01 6.86e-01 7.39e-01   ph/cm2/s
              Error 1.07e-01 8.06e-02 6.70e-02 1.55e-01 1.95e-01 2.53e-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    1.912    0.338    -      -           1.92e-02 5.19e-03   72.180 57
CPL  -1.599    2.220      49.5    8.4      1.43e+00 1.09e+01   61.070 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.291    0.449    -      -           5.90e-03 1.57e-03   89.660 57
CPL   0.612    1.678     104.8    0.0      1.28e-02 8.42e-02   89.130 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    0.096    0.000    0.096
T90     0.080    0.000    0.080
T50     0.048    0.016    0.064
Peak    1.000   -0.444    0.556

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
  301.3236    16.5400   0.0255    22.6196  -103.7447         0.0505713      7.507 TRIG_01207446                 
 
Foreground time interval of the image:
  0.000   0.096 (delta_t =   0.096 [sec])
Background time interval of the image:
-25.723   0.000 (delta_t =  25.723 [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 0.064000

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 0.064000

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 0.064000

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    0.000 sec. to    0.096 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.91241     ( -0.330065   0.346571 )
Norm@50keV  : 1.92038E-02    ( -0.00522058   0.00516118 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   72.18     using 59 bins.
 Reduced chi-squared = 1.26632
# Null hypothesis probability of 8.48e-02 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 0.096 sec: 2.77136 ( -0.73575  0.73785 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.69497e-08 ( -4.53996e-09  4.56136e-09 ) ergs/cm2

Cutoff power-law model

Time interval is from    0.000 sec. to    0.096 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.59907     ( -2.58104   1.85911 )
Epeak [keV] : 49.4730      ( -8.34399 8.42182 )
Norm@50keV  : 1.43128    ( -1.43636   20.3228 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   61.07     using 59 bins.
 Reduced chi-squared = 1.09054
# Null hypothesis probability of 2.99e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 0.096 sec: 2.99910 ( -0.74717  0.75077 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.86574e-08 ( -4.48704e-09  4.5038e-09 ) ergs/cm2

Band function

Time interval is from    0.000 sec. to    0.096 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]    : 12.8125  (-2.10594  2.14673)
R^2/D10^2   : 0.710387  (-0.341127   0.665766)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   60.99     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.35e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.375e-09   9.091e-10
25- 50  8.050e-09   3.110e-09
50-150  8.283e-09   3.588e-09
15-150  1.871e-08   5.453e-09

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 74.4227       (-28.4905      66.2777)
Norm        : 14.7011       (-4.53277     5.38869)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   68.22     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 1.47e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.642e-09   1.152e-09
25- 50  5.889e-09   1.899e-09
50-150  7.908e-09   4.785e-09
15-150  1.744e-08   6.029e-09

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.44911        (-6.27075      -6.27075)
R1^2/D10^2  : 0.284550        (-0.331277      -0.331277)
kT2 [keV]   : 12.9610        (-12.9593      7.39892)
R2^2/D10^2  : 0.664248    (-0.666631   0.707506)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   60.97     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 2.70e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  0.000e+00   0.000e+00
25- 50  0.000e+00   0.000e+00
50-150  0.000e+00   0.000e+00
15-150  0.000e+00   0.000e+00

Peak spectrum fit

Power-law model

Time interval is from   -0.444 sec. to    0.556 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.29062     ( -0.456198   0.442439 )
Norm@50keV  : 5.89946E-03    ( -0.00156841   0.00156627 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   89.66     using 59 bins.
 Reduced chi-squared = 1.57298
# Null hypothesis probability of 3.73e-03 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 0.702630 ( -0.190526  0.191394 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.84386e-08 ( -1.69212e-08  1.72708e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -0.444 sec. to    0.556 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.612139     ( -2.2849   1.07192 )
Epeak [keV] : 104.815      ( -104.817 -104.817 )
Norm@50keV  : 1.28390E-02    ( -0.0128386   0.155475 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   89.13     using 59 bins.
 Reduced chi-squared = 1.59161
# Null hypothesis probability of 3.20e-03 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 0.686311 ( -0.194672  0.195196 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.58097e-08 ( -1.83297e-08  1.83879e-08 ) ergs/cm2

Band function

Time interval is from   -0.444 sec. to    0.556 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]    : 17.0084  (-5.35408  8.21881)
R^2/D10^2   : 5.46377E-02  (-0.0398896   0.144032)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   91.53     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 2.52e-03 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.219e-09   1.836e-09
25- 50  1.425e-08   8.490e-09
50-150  2.943e-08   1.813e-08
15-150  4.690e-08   2.588e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.361       (-106.734      -199.362)
Norm        : 2.92248       (-0.779936     0.781728)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   90.25     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.30e-03 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.277e-09   4.506e-09
25- 50  1.400e-08   8.235e-09
50-150  3.070e-08   1.831e-08
15-150  5.198e-08   3.117e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.13563        (-5.28582      -8.11426)
R1^2/D10^2  : 0.400333        (-0.379006      8.80903)
kT2 [keV]   : 29.4354        (-16.8936      -29.3809)
R2^2/D10^2  : 6.72300E-03    (-0.00674715   0.0661937)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   88.55     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 2.77e-03 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.772e-09   3.803e-09
25- 50  1.438e-08   7.765e-09
50-150  3.721e-08   2.161e-08
15-150  5.736e-08   2.967e-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: 1.91241     ( -0.330065   0.346571 )
Norm@50keV  : 1.92038E-02    ( -0.00522058   0.00516118 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   72.18     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 8.48e-02 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 0.096 sec: 2.77117 ( -0.735668  0.737785 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.69465e-08 ( -4.53821e-09  4.56096e-09 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.59883     ( -2.58105   1.85909 )
Epeak [keV] : 49.4730      ( -8.34399 8.42183 )
Norm@50keV  : 1.43090    ( -1.43636   20.3228 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   61.07     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 2.99e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 0.096 sec: 2.99890 ( -0.747  0.75064 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.86623e-08 ( -4.48829e-09  4.51286e-09 ) 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)  = 4.96e-09
S(50-100 keV) = 5.27e-09

T90 vs. Hardness ratio plot

T90                                   = 0.0800000429153442 sec.
Hardness ratio (energy fluence ratio) = 1.0625

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.93662
Count Ratio (50-100 keV) / (15-25 keV) = 2.38704

Mask shadow pattern

IMX = -9.899695004969376E-02, IMY = 4.047305283342757E-01

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.064000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.064000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.064000

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:
-25.723400 0.000000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.5578  35.2334   10.9  39.7  -11.6   0.1072   1.1    8.2	Her X-1                       
288.9176  10.8839  135.5  31.4  -81.4   0.0090   0.1    7.9	GRS 1915+105                  
299.6583  35.1290    3.3   5.6  -63.9   0.2231   3.5    5.5	Cyg X-1                       
308.1037  40.7900    2.8   3.1  120.8   0.2624   4.2    9.8	Cyg X-3                       
326.1189  38.1716   29.2  16.7  153.6   0.0257   0.4    9.3	Cyg X-2                       
330.0797  25.7430    2.4  25.0 -178.0   0.3487   4.9 ------	UNKNOWN                       
267.6620   8.7374    2.4  44.9  -54.7   1.0996   4.9 ------	UNKNOWN

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

Time interval of the image:
0.000000 0.096000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.4015  35.3184   26.7  39.8  -11.4   0.0032   0.4    3.1	Her X-1                       
288.8947  10.9283    4.8  31.4  -81.3  -0.0209  -2.4    5.8	GRS 1915+105                  
299.7657  35.1589    4.8   5.5  -64.3   0.0126   2.4    9.0	Cyg X-1                       
308.1504  41.1036    4.5   3.4  116.8  -0.0130  -2.5    9.2	Cyg X-3                       
325.9142  38.2915    0.0  16.5  153.2   0.0029   0.6   12.3	Cyg X-2                       
357.0132  16.5884    2.2  50.5  168.6   0.0864   5.3 ------	UNKNOWN                       
350.4110  11.4653    2.1  48.9  179.1   0.0634   5.5 ------	UNKNOWN                       
242.5143  25.7332    2.1  53.2  -17.1   0.0895   5.5 ------	UNKNOWN                       
301.3236  16.5400    1.5  22.6 -103.7   0.0506   7.5 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
782.076600 962.308500
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 86.1839   3.6326    2.4  39.3   93.9   4.2396   4.8 ------	UNKNOWN                       
122.6322 -36.9029    2.9  53.9  167.1   4.6167   4.0 ------	UNKNOWN                       
 45.8161   6.8371    3.6  35.5   25.0   1.3165   3.2 ------	UNKNOWN                       
 67.5276 -59.4389    2.5  33.8 -138.3   1.6109   4.6 ------	UNKNOWN

Plot creation:
Sat Mar  9 15:17:19 EST 2024