ASTROSAT CZTI

Data Quality Report

Orbit 56018

Creation date: 2026-02-06T23:22:37.297670
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/AS1A14_066T02_9000006546_56018cztM0_level2.fits modeM0/AS1A14_066T02_9000006546_56018cztM0_level2_quad_clean.evt
Size (bytes)587,531,520114,647,040
Size560.3 MB 109.3 MB
Events in quadrant A5,669,945722,246
Events in quadrant B4,462,395811,784
Events in quadrant C5,521,611682,674
Events in quadrant D5,455,562682,140

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227330
B0191010
C0225410
D0220210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82325797.033528%
B82331672.028422%
C82336858.320175%
D82332022.453541%

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 8232 8232 338 338 4.11% 4.11%
B 8233 8233 65 65 0.79% 0.79%
C 8233 8233 486 486 5.90% 5.90%
D 8233 8233 165 165 2.00% 2.00%

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 8 1440884 6595.22 883 860 218.3
A 12 115 560674 2563.91 883 860 218.3
A 15 32 130361 593.11 883 860 218.3
B 5 172 254196 1296.27 899 862 195.4
B 10 247 183159 932.78 899 862 195.4
B 5 185 149826 762.22 899 862 195.4
C 15 199 1805373 7802.67 848 842 231.3
C 12 252 192218 827.5 848 842 231.3
C 14 80 102371 439.0 848 842 231.3
D 11 129 729044 2986.39 868 831 243.8
D 6 239 408511 1671.89 868 831 243.8
D 2 249 283698 1160.03 868 831 243.8

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