ASTROSAT CZTI

Data Quality Report

Orbit 10893

Creation date: 2024-06-27T16:05:17.358788
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/AS1A04_055T01_9000001574_10893cztM0_level2.evt modeM0/AS1A04_055T01_9000001574_10893cztM0_level2_quad_clean.evt
Size (bytes)1,434,723,840229,420,800
Size1.3 GB 218.8 MB
Events in quadrant A12,796,0051,401,567
Events in quadrant B12,463,1731,411,437
Events in quadrant C7,962,7041,480,025
Events in quadrant D9,004,4081,405,036

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0499584
B0491033
C0367563
D0395863

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03680
B03680
C03680
D03680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1813610635.861270%
B1813613567.476842%
C18136870.479709%
D181361620.893251%

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 20316 18139 668 668 3.29% 3.68%
B 20316 18139 824 824 4.06% 4.54%
C 20316 18140 7 7 0.03% 0.04%
D 20316 18139 82 82 0.40% 0.45%

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 8 5 4529868 11018.4 2034 1988 410.9
A 5 16 368306 891.42 2034 1988 410.9
A 11 29 24184 54.01 2034 1988 410.9
B 4 239 4219745 10980.79 2032 1983 384.1
B 0 214 146020 375.0 2032 1983 384.1
B 0 219 53586 134.35 2032 1983 384.1
C 14 234 38679 78.52 2020 2024 466.8
C 14 67 19321 37.05 2020 2024 466.8
C 13 61 15206 28.24 2020 2024 466.8
D 10 199 233447 479.66 2006 1950 482.6
D 8 195 215681 442.85 2006 1950 482.6
D 9 85 165714 339.32 2006 1950 482.6

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