CZTI GRB monitor page

 
            Astrosat CZTI GRB Archive

 

           
GRB Name

Trigger time

Astrosat seconds

RA, Dec

deg

 theta,  phi 

deg

T90

sec

Links
GRB171112A 248215801.0 20.467, -59.678 100.83, 120.80   Veto_lightcurve
GRB171103A 247446633.0 249.536, -10.215 65.53, 16.19 0.46

CZTI_lightcurves

Veto_lightcurve

GRB171101A 247229388.9 -- --   Veto_lightcurve
GRB171027A 246788587.0 61.680 -2.606 66.00,  216.13  

CZTI_lightcurves

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GRB171010A 245358051.58 66.74, -10.53 55.30,  35.19 70.3

CZTI_lightcurves

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GRB170921B 243662532.51 134.38, 46.46 139.48, 318.17 30.5

CZTI_lightcurves

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GRB170906A 242354592.0 203.9546, -47.1007 146.26, 263.22 70.5 Veto_lightcurve
GRB170830A 241758930.0 267.244,  -2.000 25.04, 50.17  

CZTI_lightcurves

GRB170822A 241089112.0 94.3869, 55.0040 51.87,  296.34  

CZTI_lightcurves

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GRB170820A 240923526.1 -- --  

CZTI_lightcurves

Veto_lightcurve

 

GRB170805A 239639915.40 -- --  

CZTI_lightcurves

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GRB170803B 239493632.78 -- --  

CZTI_lightcurves

Veto_lightcurve

GRB170803A 239477428.00 174.950, -16.311 175.13, 58.85   Veto_lightcurve
GRB170802A 239383105.8 52.3,  -39.2 93.77, 96.79  

CZTI_lightcurves

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GRB170728B 238979000.0 238.044 +70.142  146.0,  273.59  

CZTI_lightcurves

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GRB170726A 238791780.976 -- --  

CZTI_lightcurves

Veto_lightcurve

GRB170712A 237525631.0 -- --  

CZTI_lightcurves

Veto_lightcurve

GRB170705A 236918748.0 191.705, +18.293 53.59,  74.1 14.9

CZTI_lightcurves

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GRB170702A 236734894.0 -- --  

CZTI_lightcurves

Veto_lightcurve

GRB170614A 235136396.892 -- -- 21.4

CZTI_lightcurves

Veto_lightcurve

GRB170607B 234571319.95 257.08, -35.68 96.32,  178.63 21.8

CZTI_lightcurves

Veto_lightcurve

GRB170607A 234573480.57 7.36, 9.24 109.24,  294.42  

CZTI_lightcurves

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GRB170529A 233737542.567 -- -- 33.5

CZTI_lightcurves

Veto_lightcurve

GRB170527A 233580663.37 195.19,  +0.94 26.54,  101.57   Veto_lightcurve
GRB170511A 232178352.92 300.633, 33.315 81.22,  263.31  

CZTI_lightcurves

Veto_lightcurve

GRB170510A 232089146.73 159.91, -39.32  107.74, 116.84 67.8 Veto_lightcurve
GRB170424A 230724751.75 343.7,  -45.12  157.58, 186.20  

CZTI_lightcurves

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GRB170403B 228934652.18 -- --   Veto_lightcurve
GRB170402A 228811851.076 -- --  

CZTI_lightcurves

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GRB170330A 228608821.0 283.326, -13.437 73.80, 56.94 15.6

CZTI_lightcurves

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GRB170329A 228475026.94 356.6, 9.8 66.59, 4.78 14.1

CZTI_lightcurves

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GRB170311B 226935890.0 354.919, +31.187 107.36, 32.72 13.4

CZTI_lightcurves

Veto_lightcuve

GRB170309A 226758402.0 -- --   Veto_lightcurve
GRB170304A 226281866.07 330.50, -73.76 43.32, 295.58   CZTI_lightcurves
GRB170228A 226004580.71 239.55, -3.59 51.06, 109.42 14.1

CZTI_lightcurves

Veto_lightcurve

GRB170222A 225435659.0 312.10, +12.45 86.31, 351.59   Veto_lightcurve
GRB170220A 225312481.0 -- --   Veto_lightcurve
GRB170209A 224298518.08 113.40, -49.64 100.66, 235.16 40.4

CZTI_lightcurves

Veto_lightcurve

GRB170208A 224273476.0 166.563, -46.779 70.79, 253.29 10.7

CZTI_lightcurves

Veto_lightcurve

GRB170207A 224199903.67 325.87, +50.05 84.88, 47.04 36.5

CZTI_lightcurves

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GRB170202B 223715994.0 -- --   Veto_lightcurve
GRB170202A 223756082.0 152.529, +5.002 46.38, 203.52   CZTI_lightcurves
GRB170127C 223176947.79 336.38, -63.4 46.76, 307.28 0.91

CZTI_lightcurves

Veto_lightcurve

GRB170126A 223126242.0 263.579, -64.757 107.08, 303.83  

CZTI_lightcurves

Veto_lightcurve

GRB170124A 222987484.58 -- --   Veto-lightcurve
GRB170121B 222705862.41 72.84, -12.65 116.22, 204.34 28.3

CZTI_lightcurves

Veto_lightcurve

GRB170121A 222658615.20 3.0,  -75.62 109, 70.58   Veto_lightcurve
GRB170115B 222198554.03 189.03, -51.55 116.52, 127.36 15.3

CZTI_lightcurves

Veto_lightcurve

GRB170105A 221292847.0 -- --  

CZTI_lightcurves

Localisation

Healpix localisation file

GRB170102A 221021478.0 -- --  

CZTI_lightcurves

Veto_lightcurve

GRB170101B 220934837.87 70.6 , -1.6 - - 14.7 CZTI_lightcurves
GRB161218B  219745960.0 358.64 , -16.95  -142.94, 124.82  29.0

CZTI_lightcurves

Veto_lightcurve

GRB161207A 218839380.4 -- --  

CZTI_lightcurves

Veto_lightcurve

GRB161203A 218486466.318 -- -- 8.6

CZTI_lightcurves

Veto_lightcurve

GRB161202A 218416310.0 356.895,+19.640 92.56, 247.2 75.25

CZTI_lightcurves

Veto_lightcurve

GRB161129A 218099499.0 316.193, +32.125 63.26, 316.90 34.06

CZTI_lightcurves

Veto_lightcurve

GRB161023A 214958320.0   311.03, -47.66   103.77, 112.35 44.0

CZTI_lightcurves

Veto_lightcurve

GRB161015A 214246987.03 269.15, 30.19 55.89, 272.83 22.0

CZTI_lightcurves

Veto_lightcurve

GRB161010A 213802592.0 275.22,-28.79 112.37, 100.88  

CZTI_lightcurves

Veto_lightcurve

GRB161004B 213318479.0 112.15,-39.89 140.30, 32.33 13.1

CZTI lightcurves

Veto lightcurve

GRB160917B 211805772.0 -- --  

CZTI_lightcurves

Veto_lightcurve

GRB160917A 211807819.0 295.67,46.39 125.97, 67.24 21

CZTI_lightcurves

Veto_ligthcurve

GRB160915A 211675872.0 -- --  

CZTI_lightcurves

Veto_lightcurve

GRB160910A 211223979.15 221.8,39.6 65.32, 332.32  9.5

CZTI_lightcurves

Veto_lightcurve

GRB160824B  209744472.34 73.0 ,68.0 46.43, 92.41 2.9

CZTI_lightcurves

Veto_lightcurve

GRB160821A 209507670.0  171.25, 42.34 156.18, 59.18 42.0

CZTI_lightcurves

Veto_lightcurve

GRB160806A 208188060.0 -- --   CZTI_lightcurves
GRB160804B 207980322.7 -- --  

CZTI_lightcurves

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GRB160804A 207980322.7 -- --  

CZTI_lightcurves

GRB160802A  207814409.0 35.29, 72.69 52.95, 273.18 16.8

CZTI_lightcurves

Veto_lightcurve

GRB160720A   206735037.0  43.0,+76.0 144.32, 80.15 21.0

CZTI_lightcurves

Veto_lightcurve

GRB160721A 206824858.5 -- --   CZTI_lightcurves
GRB160712A 206049221.0 304.16,-26.958 92.43,177.87  

CZTI_lightcurves

Veto_lightcurve

GRB160709A 205789743.464 236.00,-28.18 123.82, 230.13 0.49

CZTI_lightcurves

Veto_lightcurve

GRB160703A  205243807.0  287.39, 36.90 10.15, 95.08 45.0

CZTI_lightcurves

Veto_lightcurve

SGR1935+2154 204645270.0 293.73, 21.89 --   CZTI_lightcurve
GRB160630A 204955449.0 198.259,-56.042 106.92,239.03   Veto_lightcurve
GRB160625B 204528715.0 308.56,6.93 140.54,152.90  

CZTI_lightcurves

Veto_lightcurve

GRB160623A 204354034.23  315.24, 42.27 140.52, 118.09  

CZTI_lightcurves

Veto_lightcurve

GRB160607A 202994040.0 13.667,-4.95 138.85, 315.78  

CZTI_lightcurves

Veto_lightcurve

GRB160530A 202287826.000 120.2,-26.2  91.59, 68.91  

CZTI_lightcurves

Veto_lightcurve

GRB160527A 202010137.0 218.43,6.68 38.46,159.21   CZTI_lightcurves
GRB160525C 201869670.000 -- -- 5.075 CZTI_lightcurves
GRB160522A 201609661.0 104.7, 21.19 57.16, 28.16   CZTI_lightcurves
GRB160521B 201518040.030 156, 76  51.24, 317.02 3

CZTI_lightcurves

Veto_lightcurve

GRB160518A 201228952.0 275.14, 82.41 47.95, 63.53  

CZTI_lightcurves

Veto_lightcurve

GRB160516A 201073307.0 310.83, -55.33 91.04, 246.49  

CZTI_lightcurves

Veto_lightcurve

GRB160509A 200480326.0 311.3, 76.1 105.66, 85.52  

CZTI_lightcurves

Veto_lightcurve

GRB160508B 200413953.0 -- --  

CZTI_lightcurves

Veto_lightcurve

GRB160508A 200413953.730  28.7,36.28 136.34, 34.86 24.97

CZTI lightcurves

Veto lightcurve

GRB160422A 199022342.81 42.05, -57.9  136.40, 82.80 12

CZTI lightcurves

Veto lightcurve

GRB160401A 197170442.0 290.19,-28.9 155.15,19.33   Veto_lightcurve
GRB160330A 197063484.0 209.73,26.29 39.73, 122.12   CZTI_lightcurves
GRB160325A 196585205.00 16.0025,-72.048 0.66, 159.48 57.0

CZTI lightcurves

Veto lightcurve

Image

GRB160314B 195689873.0 167.56,45.67 46.50,135.25  

CZTI_lightcurves

Veto_lightcurve

GRB160227B 194299026.0 123.43, -48.27 105.66, 214.13  

CZTI_lightcurves

Veto_lightcurve

GRB160223B 193917541.0 94.994, 33.408 53.13, 231.28  

CZTI_lightcurves

Veto_lightcurve

GRB160216A 193345830.0 311.684,-71.548 31.27,302.0  

CZTI_lightcurves

Veto_lightcurve

GRB160131A 191924431.0 78.168,-7.05 116.86, 184.86  

CZTI_lightcurves

Veto_lightcurve

GRB160119A 190868766.0 211.893, 20.474 --   CZTI_lightcurves
GRB160118A 190776342.0 17.72, 59.78 95.64, 109.74   CZTI_lightcurves
GRB160106A 189816330.0 181.61, 17.45 106.11,255.69  

CZTI_lightcurves

Veto_lightcurve

GRB160102C 189469696.0 143.44, 38.75 51.03, 220.94   CZTI_lightcurves
GRB160101B 189321012.0 1.36,55.23 30.10, 76.09  

CZTI_lightcurves

Veto_lightcurve

GRB151231B 189265088.0 150.08,28.81 64.81, 225.40  

CZTI_lightcurves

Veto_lightcurve

GRB151228A 188967912 214.017,-17.665 109.87, 299.0   Veto_lightcurve
GRB151222A 188467813 355.18,36.7 122.52, 279.92   Veto_lightcurve
GRB151130A 186551450 136.27,-18.82 111.47,247.72   Veto_lightcurve
GRB151129A 186480006 60.82,-11.49 55.01, 190.25   CZTI_lightcurves
GRB151120A 185703771 157.25, -32.524 140.35,292.85  

CZTI_lightcurves

Veto_lightcurve

GRB151107B 184623892.0 31.3,45.59 119.49, 180.37  

CZTI_lightcurves

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GRB151027A 183614304.0 272.487,61.353 102.49, 268.57  

CZTI_lightcurves

Veto_lightcurve

GRB151021B 183149968.0 104.34,-10.96 53.45, 81.10  

CZTI_lightcurves

Veto_lightcurve

  GRB151006A   181821303.00 147.425,+70.503 60.83, 67.57  

CZTI lightcurves

Veto_lightcurve

 

Description of Light Curve PDF
 
The lightcurve PDF file for each GRB contains four pages for each of the four independent quadrants (A, B, C, D) of CZTI. The time of the GRB trigger is marked with a vertical dashed line. The plots for each quadrant are:

 

Page 1The upper left panel shows a "spectrogram" - counts as a function of energy and time. The time axis is in seconds since 2010-01-01 00:00:00 UT, while energy is in keV. By default, this is calculated with 20 keV bins for energy and 20 second bins for time. The lower left panel is the total lightcurve. The upper right panel is the total spectrum integrated over the entire observation. In other words, the upper left and lower right panels are projections of the upper left spectrogram. The lower right panel is a histogram of count rates. We can refer to the counts, spectrum and lightcurve as C(E,t), S(E) and L(t) respectively.

 

Page 2: These plots are obtained by subtracting the mean CZTI spectrum from the spectrogram on page 1. In short, C_sub(E,t) = C(E,t) - S(E). This serves to highlight any transient activity. Panel details are as in page 1.

 

Page 3: To estimate the significance of any transient activity, we take the mean-subtracted lightcurve at each energy, and divide it by the standard deviation at that energy. Mathematically, we have C_norm(E,t) = (C(E,t) - S(E)) / sigma(E). The other panels are projections of the 2d plot as on page 1.

 

Page 4: This shows the total lightcurve (page 1 lower left), mean spectrum subtracted lightcurve (page 2 lower left), and the normalised lightcurve (page 3 lower left) on a single page. 

 

Pages 5-8, 9-12 and 13-16 repeat these plots for quadrants B, C and D respectively.