ASTROSAT CZTI

Data Quality Report

Orbit 20833

Creation date: 2024-06-27T18:20:05.878637
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/AS1A05_013T01_9000003070_20833cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20833cztM0_level2_quad_clean.evt
Size (bytes)614,229,120104,423,040
Size585.8 MB 99.6 MB
Events in quadrant A3,337,114688,724
Events in quadrant B3,978,346679,493
Events in quadrant C3,373,522663,099
Events in quadrant D7,430,704634,524

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146221
B0164441
C0147091
D0273501

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7123360.505405%
B7124881.235261%
C7123640.898498%
D71234997.005475%

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 7338 7123 0 0 0.00% 0.00%
B 7339 7124 16 16 0.22% 0.22%
C 7338 7123 0 0 0.00% 0.00%
D 7338 7123 971 971 13.23% 13.63%

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 0 226 7577 38.36 868 852 175.3
A 3 137 6897 34.48 868 852 175.3
A 12 194 6206 30.54 868 852 175.3
B 0 189 230889 1400.5 856 834 164.3
B 7 220 140694 851.42 856 834 164.3
B 0 219 94723 571.57 856 834 164.3
C 14 238 129268 669.61 823 827 191.8
C 3 233 21933 110.03 823 827 191.8
C 0 207 7303 33.76 823 827 191.8
D 1 20 3883578 19353.37 830 804 200.6
D 9 1 110537 546.96 830 804 200.6
D 1 52 90646 447.81 830 804 200.6

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