ASTROSAT CZTI

Data Quality Report

Orbit 35340

Creation date: 2022-04-12T14:58:03.033577
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_093T01_9000005064_35340cztM0_level2.evt modeM0/AS1A11_093T01_9000005064_35340cztM0_level2_quad_clean.evt
Size (bytes)657,794,88084,286,080
Size627.3 MB 80.4 MB
Events in quadrant A2,858,206561,654
Events in quadrant B9,105,415466,902
Events in quadrant C3,313,126572,590
Events in quadrant D4,241,466534,425

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124323
B0312052
C0133952
D0165052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5952290.487231%
B5952256443.077957%
C5952781.310484%
D59523015.057124%

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 7236 5953 26 26 0.36% 0.44%
B 7235 5951 2023 2023 27.96% 33.99%
C 7235 5951 63 63 0.87% 1.06%
D 7235 5951 278 278 3.84% 4.67%

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 113657 825.46 680 668 136.9
A 8 192 44082 317.17 680 668 136.9
A 9 143 32174 230.17 680 668 136.9
B 5 236 3824441 35409.96 554 537 108.0
B 5 172 3009660 27864.95 554 537 108.0
B 15 85 26076 236.49 554 537 108.0
C 15 214 248917 1601.14 665 670 155.0
C 0 10 211745 1361.39 665 670 155.0
C 4 254 155052 995.73 665 670 155.0
D 10 118 607608 3769.01 653 635 161.0
D 8 195 531845 3298.56 653 635 161.0
D 7 80 224815 1392.05 653 635 161.0

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