ASTROSAT CZTI

Data Quality Report

Orbit 20190429_C04_009T04_9000002866_level2

Creation date: 2019-04-30T12:04:37.249435
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/AS1C04_009T04_9000002866cztM0_level2_bc.evt modeM0/AS1C04_009T04_9000002866cztM0_level2_quad_clean.evt
Size (bytes)567,437,760167,512,320
Size541.2 MB 159.8 MB
Events in quadrant A1,949,2201,235,000
Events in quadrant B2,065,6881,234,231
Events in quadrant C1,813,7301,166,821
Events in quadrant D10,760,688836,494

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180340
B0184330
C0177730
D0579930

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8630610.706837%
B8630840.973349%
C8630640.741599%
D8630551163.858633%

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 10930 8629 0 0 0.00% 0.00%
B 10930 8629 5 5 0.05% 0.06%
C 10930 8629 1 1 0.01% 0.01%
D 10929 8627 118 118 1.08% 1.37%

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 9401 82.42 498 491 108.1
A 12 96 9356 82.0 498 491 108.1
A 13 254 8643 75.4 498 491 108.1
B 7 220 39973 415.14 493 483 95.1
B 15 32 37466 388.79 493 483 95.1
B 4 216 27476 283.77 493 483 95.1
C 5 112 15881 138.97 465 463 110.9
C 4 175 5030 41.16 465 463 110.9
C 3 233 3744 29.57 465 463 110.9
D 10 66 7017786 78717.87 364 351 89.1
D 7 238 1770063 19851.69 364 351 89.1
D 1 52 206459 2312.01 364 351 89.1

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