ASTROSAT CZTI

Data Quality Report

Orbit 20170423_C02_033T02_9000001198_level2

Creation date: 2017-09-23T19:43:27.223428
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/AS1C02_033T02_9000001198cztM0_level2.evt modeM0/AS1C02_033T02_9000001198cztM0_level2_quad_clean.evt
Size (bytes)1,459,330,560243,354,240
Size1.4 GB 232.1 MB
Events in quadrant A10,535,9431,467,035
Events in quadrant B11,042,6561,469,713
Events in quadrant C10,236,0071,439,491
Events in quadrant D10,817,5861,403,371

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0476120
B0484680
C0470720
D0490180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04700
B04700
C04700
D04700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A231141800.778749%
B231141920.830665%
C231141140.493208%
D231131880.813395%

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 26514 23117 15 15 0.06% 0.06%
B 26514 23116 15 15 0.06% 0.06%
C 26514 23117 0 0 0.00% 0.00%
D 26514 23118 42 42 0.16% 0.18%

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 5 16 133458 237.57 2697 2639 550.6
A 13 251 32938 55.02 2697 2639 550.6
A 0 226 24900 40.43 2697 2639 550.6
B 0 214 199373 378.68 2709 2646 519.5
B 4 81 146116 276.16 2709 2646 519.5
B 12 111 57121 104.86 2709 2646 519.5
C 8 128 22925 33.52 2611 2627 605.6
C 13 61 20404 29.35 2611 2627 605.6
C 8 222 13282 17.59 2611 2627 605.6
D 1 52 625473 932.21 2592 2526 668.3
D 13 105 128897 189.11 2592 2526 668.3
D 2 234 78542 113.75 2592 2526 668.3

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