ASTROSAT CZTI

Data Quality Report

Orbit 53759

Creation date: 2025-09-06T10:55:22.492975
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_022T04_9000006506_53759cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53759cztM0_level2_quad_clean.evt
Size (bytes)914,800,32065,969,280
Size872.4 MB 62.9 MB
Events in quadrant A14,300,698132,942
Events in quadrant B2,913,071624,039
Events in quadrant C10,927,397303,390
Events in quadrant D5,250,040510,817

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0467331
B0131581
C0366527
D0199211

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6099487179.865552%
B6100991.622951%
C6099303249.713068%
D60994717.722577%

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 7199 6099 4911 4911 68.22% 80.52%
B 7200 6100 33 33 0.46% 0.54%
C 7198 6098 2996 2996 41.62% 49.13%
D 7199 6100 531 531 7.38% 8.70%

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 63 12415209 122760.47 408 399 101.1
A 12 3 131487 1296.23 408 399 101.1
A 3 78 35069 342.82 408 399 101.1
B 0 213 184313 1333.1 641 619 137.8
B 5 185 71959 517.73 641 619 137.8
B 4 81 31932 227.24 641 619 137.8
C 1 241 6180197 48951.84 456 452 126.2
C 15 224 2448832 19394.44 456 452 126.2
C 13 3 167738 1325.13 456 452 126.2
D 2 172 2019861 11490.83 611 584 175.7
D 10 172 373389 2121.47 611 584 175.7
D 2 120 108909 616.43 611 584 175.7

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