ASTROSAT CZTI

Data Quality Report

Orbit 50890

Creation date: 2025-02-24T04:29:27.339210
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/AS1C07_001T01_9000006450_50890cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50890cztM0_level2_quad_clean.evt
Size (bytes)1,034,150,40099,846,720
Size986.2 MB 95.2 MB
Events in quadrant A10,303,046643,867
Events in quadrant B4,362,729854,057
Events in quadrant C13,401,041323,766
Events in quadrant D9,569,684622,484

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0364390
B0188670
C0456220
D0342720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8328187922.562440%
B83291051.260656%
C8329514861.808140%
D8329132115.860247%

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 8328 8328 1516 1516 18.20% 18.20%
B 8329 8329 52 52 0.62% 0.62%
C 8328 8326 2671 2671 32.07% 32.08%
D 8329 8329 879 879 10.55% 10.55%

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 4 4 5084851 24293.16 835 812 209.3
A 7 206 725786 3464.16 835 812 209.3
A 4 3 297735 1418.79 835 812 209.3
B 0 171 177814 929.85 896 864 190.3
B 4 81 109744 572.15 896 864 190.3
B 4 206 73824 383.39 896 864 190.3
C 1 29 7957312 54859.32 519 516 145.0
C 4 210 849299 5852.06 519 516 145.0
C 15 173 455864 3139.46 519 516 145.0
D 7 45 3040976 12877.6 833 804 236.1
D 2 249 443920 1876.96 833 804 236.1
D 1 47 426921 1804.95 833 804 236.1

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