ASTROSAT CZTI

Data Quality Report

Orbit 20220417_A11_097T17_9000005074_level2

Creation date: 2026-01-02T10:41:10.156496
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_097T17_9000005074cztM0_level2.fits modeM0/AS1A11_097T17_9000005074cztM0_level2_quad_clean.evt
Size (bytes)551,134,080508,325,760
Size525.6 MB 484.8 MB
Events in quadrant A3,440,1523,064,691
Events in quadrant B3,079,6822,691,189
Events in quadrant C3,262,9282,888,351
Events in quadrant D2,862,6782,707,860

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01203500
B02302240
C01534170
D01486460

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012040
B012040
C012040
D012040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58911610.103546%
B58911825114.005873%
C5890724764.203236%
D5890915912.700776%

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 81083 58912 0 0 0.00% 0.00%
B 81083 58907 0 0 0.00% 0.00%
C 81083 58830 0 0 0.00% 0.00%
D 81083 58888 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 0 29 2876 9.18 896 842 221.7
A 7 110 2837 9.0 896 842 221.7
A 9 19 2808 8.87 896 842 221.7
B 2 9 2692 11.85 815 778 161.5
B 3 80 2357 9.77 815 778 161.5
B 2 8 2269 9.23 815 778 161.5
C 1 81 2744 8.61 862 806 225.1
C 1 80 2664 8.25 862 806 225.1
C 3 234 2269 6.5 862 806 225.1
D 7 3 2066 5.98 820 747 220.7
D 3 14 2049 5.9 820 747 220.7
D 10 113 2040 5.86 820 747 220.7

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