ASTROSAT CZTI

Data Quality Report

Orbit 20220430_T05_028T01_9000005100_level2

Creation date: 2026-01-02T11:12:49.450869
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/AS1T05_028T01_9000005100cztM0_level2.fits modeM0/AS1T05_028T01_9000005100cztM0_level2_quad_clean.evt
Size (bytes)583,110,720620,280,000
Size556.1 MB 591.5 MB
Events in quadrant A3,420,4803,479,354
Events in quadrant B3,345,4663,789,462
Events in quadrant C3,520,5063,758,872
Events in quadrant D3,034,2803,426,623

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02280
B02280
C02280
D02280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01883630
B01852180
C01525750
D01629050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012900
B012900
C012890
D012900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63083928914.725045%
B6316157379.083137%
C6316415702.485593%
D6317120953.316395%

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 85792 63182 0 0 0.00% 0.00%
B 85792 63165 0 0 0.00% 0.00%
C 85792 63167 0 0 0.00% 0.00%
D 85792 63202 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 2827 9.01 891 838 220.7
A 0 29 2738 8.61 891 838 220.7
A 9 19 2694 8.41 891 838 220.7
B 2 9 2881 11.68 886 846 174.2
B 3 80 2487 9.42 886 846 174.2
B 2 8 2339 8.57 886 846 174.2
C 1 81 2949 8.67 931 874 239.4
C 1 80 2871 8.34 931 874 239.4
C 3 203 2836 8.19 931 874 239.4
D 10 189 2299 6.5 868 792 231.7
D 7 3 2275 6.4 868 792 231.7
D 3 14 2261 6.34 868 792 231.7

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