ASTROSAT CZTI

Data Quality Report

Orbit 54826

Creation date: 2025-11-17T11:14:20.423431
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_039T06_9000006526_54826cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54826cztM0_level2_quad_clean.evt
Size (bytes)686,537,280122,794,560
Size654.7 MB 117.1 MB
Events in quadrant A4,206,746826,036
Events in quadrant B5,126,859861,597
Events in quadrant C6,032,286758,960
Events in quadrant D9,371,308665,554

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191131
B0217701
C0240541
D0339422

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8728850.973877%
B87284395.029789%
C87284515.167278%
D8728107312.293767%

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 8743 8729 39 39 0.45% 0.45%
B 8743 8729 235 235 2.69% 2.69%
C 8743 8729 286 286 3.27% 3.28%
D 8743 8729 898 898 10.27% 10.29%

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 13 248 219941 928.26 960 934 235.9
A 12 15 117461 493.9 960 934 235.9
A 4 3 27428 112.29 960 934 235.9
B 5 185 979518 4861.96 937 901 201.3
B 10 247 330877 1639.39 937 901 201.3
B 12 111 24365 116.57 937 901 201.3
C 12 252 969583 3835.6 923 918 252.5
C 13 3 561334 2219.07 923 918 252.5
C 4 5 400751 1583.21 923 918 252.5
D 1 31 1686030 6735.92 889 853 250.2
D 2 172 1478256 5905.42 889 853 250.2
D 3 12 1023335 4087.02 889 853 250.2

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