ASTROSAT CZTI

Data Quality Report

Orbit 55443

Creation date: 2025-12-27T15:59:45.265135
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_099T01_9000006536_55443cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55443cztM0_level2_quad_clean.evt
Size (bytes)392,402,88098,527,680
Size374.2 MB 94.0 MB
Events in quadrant A3,348,949641,432
Events in quadrant B3,033,731688,665
Events in quadrant C4,086,707596,770
Events in quadrant D3,520,708577,827

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01422
B01422
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015144113
B014356126
C017405190
D015610133

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68731321.920559%
B68711321.921118%
C68722904.220023%
D68741241.803899%

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 8690 6892 19 19 0.22% 0.28%
B 8701 6890 4 4 0.05% 0.06%
C 8699 6892 191 191 2.20% 2.77%
D 8689 6887 47 47 0.54% 0.68%

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 3 78 356622 1947.58 738 717 182.7
A 0 8 52772 284.85 738 717 182.7
A 4 3 22860 121.17 738 717 182.7
B 0 171 29762 184.42 728 699 157.6
B 12 32 28355 175.5 728 699 157.6
B 10 247 20762 127.31 728 699 157.6
C 13 3 1138077 5890.02 703 693 193.1
C 12 252 99629 512.34 703 693 193.1
C 15 178 31858 161.39 703 693 193.1
D 11 129 373238 1859.1 710 679 200.4
D 8 48 177192 880.81 710 679 200.4
D 5 173 56766 279.88 710 679 200.4

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