ASTROSAT CZTI

Data Quality Report

Orbit 35430

Creation date: 2022-04-20T21:43:19.738507
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_097T07_9000005072_35430cztM0_level2.evt modeM0/AS1A11_097T07_9000005072_35430cztM0_level2_quad_clean.evt
Size (bytes)687,611,52064,932,480
Size655.8 MB 61.9 MB
Events in quadrant A2,629,525440,798
Events in quadrant B10,042,601308,965
Events in quadrant C3,503,096429,217
Events in quadrant D4,268,814392,523

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116143
B0336522
C0139632
D0165442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A562370.124489%
B5623291151.769518%
C56231753.112218%
D56234698.340743%

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 7206 5624 0 0 0.00% 0.00%
B 7206 5623 2481 2481 34.43% 44.12%
C 7206 5624 114 114 1.58% 2.03%
D 7206 5623 386 386 5.36% 6.86%

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 10 83 130372 1000.05 641 628 129.7
A 9 143 10333 74.8 641 628 129.7
A 13 254 9271 66.62 641 628 129.7
B 4 251 3486008 34668.39 514 500 100.5
B 5 236 1136143 11295.6 514 500 100.5
B 5 31 1098107 10917.28 514 500 100.5
C 0 10 431612 2960.24 622 627 145.6
C 0 207 372368 2553.32 622 627 145.6
C 15 214 228070 1562.2 622 627 145.6
D 7 80 1229075 8292.07 607 591 148.2
D 12 233 178491 1200.8 607 591 148.2
D 13 249 127313 855.35 607 591 148.2

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