ASTROSAT CZTI

Data Quality Report

Orbit 21898

Creation date: 2024-06-27T18:33:37.358989
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/AS1A07_010T05_9000003236_21898cztM0_level2.evt modeM0/AS1A07_010T05_9000003236_21898cztM0_level2_quad_clean.evt
Size (bytes)481,979,52082,998,720
Size459.7 MB 79.2 MB
Events in quadrant A3,456,643527,609
Events in quadrant B3,669,445535,362
Events in quadrant C3,615,504499,466
Events in quadrant D3,414,375497,968

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146162
B0152162
C0149752
D0147212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6493841.293701%
B64931091.678731%
C64931642.525797%
D6493761.170491%

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 7723 6493 0 0 0.00% 0.00%
B 7723 6493 10 10 0.13% 0.15%
C 7723 6493 48 48 0.62% 0.74%
D 7723 6493 14 14 0.18% 0.22%

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 5 16 28656 158.19 889 874 175.6
A 13 254 11721 61.76 889 874 175.6
A 0 226 7809 39.49 889 874 175.6
B 3 64 73717 450.29 882 863 161.8
B 0 230 57943 352.8 882 863 161.8
B 0 197 37833 228.5 882 863 161.8
C 10 22 238886 1252.71 829 834 190.0
C 14 238 137387 718.59 829 834 190.0
C 4 175 8164 38.57 829 834 190.0
D 12 227 55837 272.35 850 826 202.0
D 7 238 34531 166.87 850 826 202.0
D 2 234 29857 143.73 850 826 202.0

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