ASTROSAT CZTI

Data Quality Report

Orbit 28684

Creation date: 2024-06-27T19:54:54.080699
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/AS1A10_021T04_9000004116_28684cztM0_level2.evt modeM0/AS1A10_021T04_9000004116_28684cztM0_level2_quad_clean.evt
Size (bytes)1,249,070,400209,275,200
Size1.2 GB 199.6 MB
Events in quadrant A7,656,3161,316,736
Events in quadrant B7,908,0621,347,686
Events in quadrant C8,757,0891,288,884
Events in quadrant D12,397,4481,252,617

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0337013
B0344703
C0366053
D0482263

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03360
B03360
C03360
D03360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A164161010.615253%
B164161560.950292%
C164164542.765595%
D164168164.970760%

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 18771 16416 1 1 0.01% 0.01%
B 18771 16416 7 7 0.04% 0.04%
C 18771 16416 5 5 0.03% 0.03%
D 18771 16417 593 593 3.16% 3.61%

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 13 254 26966 63.18 1974 1932 396.2
A 12 96 22829 52.74 1974 1932 396.2
A 3 137 19377 44.03 1974 1932 396.2
B 15 33 130329 344.74 1958 1907 372.5
B 12 111 47556 122.54 1958 1907 372.5
B 11 111 42945 110.16 1958 1907 372.5
C 3 233 872376 1979.42 1880 1889 439.8
C 14 238 373572 845.18 1880 1889 439.8
C 14 254 104697 233.78 1880 1889 439.8
D 1 52 3383275 7575.69 1872 1822 446.4
D 7 80 761599 1702.18 1872 1822 446.4
D 8 195 727867 1626.6 1872 1822 446.4

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