ASTROSAT CZTI

Data Quality Report

Orbit 35499

Creation date: 2022-04-22T17:36:10.874464
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A11_097T22_9000005082_35499cztM0_level2.evt modeM0/AS1A11_097T22_9000005082_35499cztM0_level2_quad_clean.evt
Size (bytes)671,952,96056,128,320
Size640.8 MB 53.5 MB
Events in quadrant A8,220,327138,444
Events in quadrant B5,343,192360,070
Events in quadrant C3,195,027403,467
Events in quadrant D3,189,297381,526

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0284213
B0197632
C0129032
D0134712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5933312952.738918%
B593394815.978426%
C5933791.331535%
D59331021.719198%

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 7215 5934 1535 1535 21.28% 25.87%
B 7215 5934 764 764 10.59% 12.87%
C 7215 5934 67 67 0.93% 1.13%
D 7215 5934 66 66 0.91% 1.11%

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 15 169 6581186 81000.42 397 390 81.2
A 10 83 78916 966.55 397 390 81.2
A 2 79 13486 161.19 397 390 81.2
B 5 236 2461936 20644.02 617 600 119.2
B 5 172 368741 3087.72 617 600 119.2
B 4 232 22318 182.16 617 600 119.2
C 0 10 288744 1873.05 661 663 153.8
C 15 214 246581 1598.91 661 663 153.8
C 9 187 35962 229.51 661 663 153.8
D 7 80 271239 1692.91 656 638 159.8
D 13 249 134522 837.59 656 638 159.8
D 10 199 62262 385.53 656 638 159.8

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