ASTROSAT CZTI

Data Quality Report

Orbit 20220904_A11_030T02_9000005328_level2

Creation date: 2026-01-05T05:03:50.602658
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_030T02_9000005328cztM0_level2.fits modeM0/AS1A11_030T02_9000005328cztM0_level2_quad_clean.evt
Size (bytes)583,603,200587,252,160
Size556.6 MB 560.0 MB
Events in quadrant A3,552,7963,638,372
Events in quadrant B3,368,8013,509,356
Events in quadrant C3,485,0803,357,286
Events in quadrant D2,941,5462,956,804

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02510
B02530
C02510
D02530

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01402090
B01520600
C01438420
D01835830

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012940
B013020
C012960
D012930

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A631071720.272553%
B6293019913.163833%
C6302210541.672432%
D6288533665.352628%

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 122308 64017 0 0 0.00% 0.00%
B 122307 63819 0 0 0.00% 0.00%
C 122308 63892 0 0 0.00% 0.00%
D 122308 63761 0 0 0.00% 0.00%

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 7 110 2931 8.92 929 874 230.6
A 9 19 2908 8.82 929 874 230.6
A 0 29 2827 8.47 929 874 230.6
B 2 9 2900 11.83 892 850 173.3
B 3 80 2587 10.02 892 850 173.3
B 5 128 2390 8.89 892 850 173.3
C 1 81 2913 8.75 921 864 234.3
C 1 80 2858 8.51 921 864 234.3
C 3 203 2821 8.35 921 864 234.3
D 10 189 2272 6.73 841 770 223.1
D 7 3 2242 6.6 841 770 223.1
D 10 113 2120 6.05 841 770 223.1

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