ASTROSAT CZTI

Data Quality Report

Orbit 20151219_G04_003T01_9000000222_level2

Creation date: 2017-10-30T13:58:37.029781
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1G04_003T01_9000000222cztM0_level2.evt modeM0/AS1G04_003T01_9000000222cztM0_level2_quad_clean.evt
Size (bytes)1,657,771,200176,817,600
Size1.5 GB 168.6 MB
Events in quadrant A12,288,6061,176,422
Events in quadrant B12,972,3991,190,971
Events in quadrant C12,151,2081,156,233
Events in quadrant D12,112,5551,118,496

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02100
B02120
C02120
D02120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0438170
B0457800
C0434270
D0433710

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10299470.456355%
B10299490.475774%
C10300210.203883%
D103021551.504562%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 28367 10303 426 426 1.50% 4.13%
B 28367 10302 448 448 1.58% 4.35%
C 28367 10304 276 276 0.97% 2.68%
D 28368 10306 717 717 2.53% 6.96%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 127 354046 471.63 3107 3120 744.1
A 11 79 10905 10.46 3107 3120 744.1
A 13 235 10163 9.47 3107 3120 744.1
B 12 52 156841 201.16 3259 3275 763.4
B 5 191 130394 166.51 3259 3275 763.4
B 15 22 117380 149.47 3259 3275 763.4
C 15 241 532161 646.32 2950 3056 818.6
C 3 111 40690 45.97 2950 3056 818.6
C 3 79 36377 40.7 2950 3056 818.6
D 10 102 506785 575.12 2824 2923 876.1
D 13 169 337193 381.54 2824 2923 876.1
D 10 84 252737 285.14 2824 2923 876.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter