ASTROSAT CZTI

Data Quality Report

Orbit 58576

Creation date: 2026-07-26T12:12:06.843717
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_044T04_9000006592_58576cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58576cztM0_level2_quad_clean.evt
Size (bytes)647,458,560108,504,000
Size617.5 MB 103.5 MB
Events in quadrant A5,631,156749,342
Events in quadrant B8,978,994562,146
Events in quadrant C4,116,114732,716
Events in quadrant D4,613,482679,639

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222270
B0322200
C0180520
D0193770

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80732493.084355%
B8073263532.639663%
C8073800.990958%
D80731161.436888%

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 8073 8073 153 153 1.90% 1.90%
B 8072 8072 1732 1732 21.46% 21.46%
C 8073 8073 55 55 0.68% 0.68%
D 8073 8073 108 108 1.34% 1.34%

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 12 114 1291978 5819.93 900 876 221.8
A 15 233 439583 1977.57 900 876 221.8
A 10 17 169297 759.19 900 876 221.8
B 6 255 5657548 37020.36 703 677 152.8
B 0 171 247734 1616.82 703 677 152.8
B 4 171 86098 559.02 703 677 152.8
C 12 249 174627 723.06 880 874 240.3
C 12 252 146441 605.77 880 874 240.3
C 14 245 93878 387.03 880 874 240.3
D 2 249 474230 1933.41 870 829 244.9
D 8 240 282865 1151.86 870 829 244.9
D 3 12 117353 475.89 870 829 244.9

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