batgrbproduct analysis for trigger=1195887

batgrbproduct Analysis for Trigger=1195887

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): Tue Dec 26 22:32:29 EST 2023
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger1195887
======================================================================

  Trigger: 01195887      Segment: 000

  BAT Trigger Time: 721405072.064   [s; MET]
      Trigger Stop: 721405073.088   [s; MET]
               UTC: 2023-11-11T14:17:19.712860    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 290.233898035718   Dec: 52.4469715812306  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    12.51
     Image Trigger?:     NO
     Rate S/N Ratio:     23.6643191323985  [ if not an image trigger ]
     Image S/N Ratio:    12.51

  Flight Position:   [ source = BAT ]
    RA: 290.233898035718   Dec: 52.4469715812306  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 290.198774660372   Dec: 52.4400635289037  [deg; J2000]  
        { 19h 20m 47.7s , +52d 26' 24.2" }
         +/- 0.772963180958617 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.2401173660246 [arcmin] (formal 1-sigma fit error)
    SNR: 43.9431830693587
 
  Angular difference between Flight and Ground position is 1.349768 arcmin
 
  Partial Coding Fraction: 0.6171875    [ including projection effects ]

  Duration
     T90: 34.0759998559952 +/- 4.8503395055933
        Measured from: -3.74399995803833
                   to: 30.3319998979568     [s; relative to TRIGTIME]
     T50: 11.6119998693466 +/- 0.860306927820265
        Measured from: 0.0160000324249268
                   to: 11.6279999017715     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.0679999589920044     
                   to: 1.067999958992     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -5.32000005245209     
                   to: 40.3400000333786     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.439329   1.961802   1.467724   0.377686
           0.061812   0.065682   0.057305   0.048656 [error]
 Peak      0.079637   0.125354   0.090236   0.029252
           0.010127   0.011642   0.010181   0.007737 [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 4.93e-07 8.68e-07 1.16e-06 3.18e-06 3.37e-06 5.71e-06   erg/cm2
              Error 3.51e-08 3.65e-08 5.82e-08 3.50e-07 1.41e-07 3.89e-07   erg/cm2
Peak flux Power-law 9.32e-01 9.07e-01 6.17e-01 6.58e-01 2.72e+00 3.11e+00   ph/cm2/s
              Error 1.55e-01 9.73e-02 8.29e-02 1.74e-01 2.84e-01 3.26e-01   ph/cm2/s
 
Fluence   Cutoff-PL 4.66e-07 6.48e-07 6.94e-07 1.69e-06 2.26e-06 3.51e-06   erg/cm2
              Error 3.77e-08 5.63e-08 4.32e-08 1.45e-07 1.56e-07 1.40e-07   erg/cm2
Peak flux Cutoff-PL 8.58e-01 9.64e-01 6.45e-01 3.58e-01 2.68e+00 2.82e+00   ph/cm2/s
              Error 1.80e-01 1.22e-01 9.37e-02 2.77e-01 2.89e-01 4.09e-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    1.580    0.070    -      -           7.87e-03 3.10e-04   53.710 57
CPL   1.183    0.291     106.4   74.3      1.23e-02 4.03e-03   47.770 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.556    0.171    -      -           2.15e-02 2.31e-03   66.850 57
CPL   1.009    0.704      88.1  -30.2      4.15e-02 4.26e-02   64.910 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: 34.880000 sec.
T50 in the 50-300 keV band: 11.712000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   45.660   -5.320   40.340
T90    34.076   -3.744   30.332
T50    11.612    0.016   11.628
Peak    1.000    0.068    1.068

Click here for the BAT GCN circular template

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

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
  290.1988    52.4401   0.0044    35.1232  -144.9016         4.4318596     43.943 TRIG_01195887                 
 
Foreground time interval of the image:
 -5.320  13.237 (delta_t =  18.557 [sec])
Background time interval of the image:
-239.064  -5.320 (delta_t = 233.744 [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)

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   -5.320 sec. to   40.340 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.57969     ( -0.0701956   0.0704107 )
Norm@50keV  : 7.86962E-03    ( -0.000309696   0.000309378 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   53.71     using 59 bins.
 Reduced chi-squared = 0.942281
# Null hypothesis probability of 5.99e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 45.66 sec: 1.00506 ( -0.041645  0.04174 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.3695e-06 ( -1.40667e-07  1.41134e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from   -5.320 sec. to   40.340 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.18279     ( -0.301273   0.281534 )
Epeak [keV] : 106.394      ( -25.4217 123.17 )
Norm@50keV  : 1.22841E-02    ( -0.00325353   0.00480189 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   47.77     using 59 bins.
 Reduced chi-squared = 0.853036
# Null hypothesis probability of 7.75e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 45.66 sec: 0.981459 ( -0.044619  0.044701 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.26535e-06 ( -1.51786e-07  1.60173e-07 ) ergs/cm2

Band function

Time interval is from   -5.320 sec. to   40.340 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]    : 15.0450  (  )
R^2/D10^2   : 0.108847  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                  173.69     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 1.00e-13 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.354e-07   1.833e-08
25- 50  9.379e-07   4.908e-08
50-150  1.447e-06   1.123e-07
15-150  2.620e-06   1.221e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 194.601       (-38.1614      -194.035)
Norm        : 4.07417       (-0.166067     0.184362)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   47.91     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 7.99e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.639e-07   2.710e-08
25- 50  8.912e-07   5.822e-08
50-150  1.947e-06   4.564e-07
15-150  3.302e-06   5.573e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.56530        (-1.10557      1.16605)
R1^2/D10^2  : 0.790570        (-0.287573      0.546468)
kT2 [keV]   : 26.3172        (-3.63927      5.48928)
R2^2/D10^2  : 1.13710E-02    (-0.00569516   0.00881807)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   50.64     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 6.42e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.180e-07   5.666e-08
25- 50  9.196e-07   9.908e-08
50-150  1.922e-06   2.956e-07
15-150  3.260e-06   3.609e-07

Peak spectrum fit

Power-law model

Time interval is from    0.068 sec. to    1.068 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.55624     ( -0.169486   0.172355 )
Norm@50keV  : 2.14502E-02    ( -0.00231602   0.00229796 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   66.85     using 59 bins.
 Reduced chi-squared = 1.17281
# Null hypothesis probability of 1.75e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 2.72048 ( -0.2835  0.28371 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.01786e-07 ( -2.34496e-08  2.36431e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    0.068 sec. to    1.068 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.00867     ( -0.788987   0.619359 )
Epeak [keV] : 88.0603      ( -27.7553 -88.0605 )
Norm@50keV  : 4.14900E-02    ( -0.0212228   0.0639227 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   64.91     using 59 bins.
 Reduced chi-squared = 1.15911
# Null hypothesis probability of 1.94e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 2.67765 ( -0.28981  0.28905 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.94639e-07 ( -2.52676e-08  2.53141e-08 ) ergs/cm2

Band function

Time interval is from    0.068 sec. to    1.068 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]    : 13.9684  (-1.65412  1.93204)
R^2/D10^2   : 0.403146  (-0.150227   0.229926)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   83.00     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 1.39e-02 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.662e-08   3.330e-09
25- 50  6.167e-08   9.215e-09
50-150  7.914e-08   1.699e-08
15-150  1.574e-07   2.135e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 190.957       (-75.0501      -191.144)
Norm        : 11.1740       (-1.16575     1.30703)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   65.25     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 2.12e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.783e-08   1.543e-08
25- 50  5.350e-08   2.882e-08
50-150  1.172e-07   6.300e-08
15-150  1.985e-07   1.081e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.22717        (-2.9374      3.25368)
R1^2/D10^2  : 2.49243        (-1.64525      12.6106)
kT2 [keV]   : 24.2723        (-7.12288      24.3098)
R2^2/D10^2  : 4.20032E-02    (-0.038108   0.125021)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   65.71     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 1.53e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.596e-08   1.330e-08
25- 50  5.582e-08   2.178e-08
50-150  1.128e-07   5.864e-08
15-150  1.946e-07   9.146e-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: 1.59460     ( -0.0608819   0.0610936 )
Norm@50keV  : 1.57249E-02    ( -0.000552561   0.000552124 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   63.03     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 2.72e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 18.56 sec: 2.01737 ( -0.0747523  0.0749079 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.73127e-06 ( -1.01176e-07  1.0137e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.893384     ( -0.285975   0.268656 )
Epeak [keV] : 81.7359      ( -10.3419 19.7194 )
Norm@50keV  : 3.44350E-02    ( -0.00874579   0.0126224 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   41.25     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 9.30e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 18.56 sec: 1.93784 ( -0.07973  0.07993 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.61148e-06 ( -1.11527e-07  1.11434e-07 ) 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)  = 8.68e-07
S(50-100 keV) = 1.16e-06

T90 vs. Hardness ratio plot

T90                                   = 34.0759998559952 sec.
Hardness ratio (energy fluence ratio) = 1.33641

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.363
Count Ratio (50-100 keV) / (15-25 keV) = 1.01973

Mask shadow pattern

IMX = -5.755117822250061E-01, IMY = 4.044529944815041E-01

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:
-239.064000 -5.320000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
299.6142  35.1948    1.3  51.0 -159.0   8.0134   8.7    1.2	Cyg X-1                       
308.2034  40.9745    5.2  44.3 -167.0   1.3981   2.2    4.4	Cyg X-3                       
326.0531  38.3853    5.4  45.3  173.2   1.7871   2.1    6.8	Cyg X-2                       
341.7406  50.7953    2.6  32.1  156.9   2.4059   4.3 ------	UNKNOWN

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

Time interval of the image:
-5.320000 13.236590
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
299.6924  35.2691    5.4  50.9 -159.1  -0.4039  -2.1    6.4	Cyg X-1                       
307.9560  41.0976    5.1  44.2 -166.7   0.2605   2.3   11.2	Cyg X-3                       
326.2554  38.1584    5.5  45.5  172.9  -0.3026  -2.1   10.6	Cyg X-2                       
 77.6332  44.7854    2.6  44.6   50.7   1.4478   4.5 ------	UNKNOWN                       
  0.6335  66.7972    2.3  15.8  133.2   0.3723   5.1 ------	UNKNOWN                       
124.3693  45.3621    2.5  49.5    6.2   0.9749   4.6 ------	UNKNOWN                       
290.1988  52.4401    0.3  35.1 -144.9   4.4317  43.9 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
87.236590 401.636600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.4395  35.3926    5.6  30.5  -78.4   1.3850   2.1    3.1	Her X-1                       
288.7725  10.9959    6.8  41.5 -146.5  -1.4142  -1.7    3.4	GRS 1915+105                  
299.6205  35.1989    0.5  18.5 -173.4  11.5476  22.3    1.5	Cyg X-1                       
308.1290  40.9178    7.6  16.8  157.8   0.8168   1.5    2.3	Cyg X-3                       
326.1920  38.3208  192.7  28.5  136.6   0.0409   0.1    1.0	Cyg X-2                       
 34.0694  74.1259    3.2  43.7   53.9   7.3578   3.6 ------	UNKNOWN                       
309.6326  34.5486    2.5  22.6  166.0   2.3332   4.6 ------	UNKNOWN                       
292.1352  53.2047    2.8   1.4   87.4   2.0903   4.2 ------	UNKNOWN                       
312.7755  -3.1664    2.1  58.8 -175.2  11.8019   5.4 ------	UNKNOWN                       
233.6059  33.1846    2.3  44.4  -61.2  10.9472   4.9 ------	UNKNOWN

Plot creation:
Tue Dec 26 22:40:49 EST 2023