ASTROSAT CZTI

Data Quality Report

Orbit 18444

Creation date: 2024-06-27T17:49:54.776459
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/AS1A05_199T01_9000002732_18444cztM0_level2.evt modeM0/AS1A05_199T01_9000002732_18444cztM0_level2_quad_clean.evt
Size (bytes)500,497,92099,688,320
Size477.3 MB 95.1 MB
Events in quadrant A3,387,718630,604
Events in quadrant B4,165,072635,288
Events in quadrant C3,431,429623,876
Events in quadrant D3,667,827611,436

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151802
B0172792
C0152002
D0159782

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74421081.451223%
B74422823.789304%
C74421061.424348%
D74421031.384037%

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 7881 7441 0 0 0.00% 0.00%
B 7882 7443 125 125 1.59% 1.68%
C 7881 7442 0 0 0.00% 0.00%
D 7882 7442 26 26 0.33% 0.35%

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 0 226 7607 37.96 878 858 177.8
A 14 238 7162 35.45 878 858 177.8
A 3 137 6952 34.27 878 858 177.8
B 10 245 725747 4283.77 874 849 169.2
B 12 111 20346 115.21 874 849 169.2
B 11 111 17551 98.7 874 849 169.2
C 14 238 128910 641.77 845 848 199.5
C 3 233 10065 46.19 845 848 199.5
C 13 61 6046 26.05 845 848 199.5
D 14 34 174007 827.82 854 828 209.2
D 12 110 141935 674.51 854 828 209.2
D 13 168 50527 237.57 854 828 209.2

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