ASTROSAT CZTI

Data Quality Report

Orbit 47175

Creation date: 2024-06-27T23:32:29.889716
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/AS1C09_003T01_9000006298_47175cztM0_level2.fits modeM0/AS1C09_003T01_9000006298_47175cztM0_level2_quad_clean.evt
Size (bytes)685,998,720120,954,240
Size654.2 MB 115.4 MB
Events in quadrant A7,590,419844,987
Events in quadrant B3,925,247861,972
Events in quadrant C3,524,238805,213
Events in quadrant D9,737,525596,880

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0281970
B0170470
C0164960
D0344820

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7957911.143647%
B7957400.502702%
C7958190.238753%
D7958180122.631314%

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 7957 7957 17 17 0.21% 0.21%
B 7957 7957 11 11 0.14% 0.14%
C 7958 7958 17 17 0.21% 0.21%
D 7958 7958 1784 1784 22.42% 22.42%

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 10 83 4124637 22630.04 874 855 182.2
A 15 235 43321 233.04 874 855 182.2
A 13 254 15078 78.05 874 855 182.2
B 4 21 129384 752.9 868 843 170.7
B 4 171 93697 543.87 868 843 170.7
B 0 190 70303 406.85 868 843 170.7
C 14 254 199551 1000.35 843 846 198.6
C 1 3 12276 57.54 843 846 198.6
C 3 233 9462 43.38 843 846 198.6
D 2 249 3844916 20616.13 744 719 186.5
D 6 112 2481043 13301.79 744 719 186.5
D 1 47 231952 1240.08 744 719 186.5

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