ASTROSAT CZTI

Data Quality Report

Orbit 26622

Creation date: 2024-06-27T19:31:06.621105
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/AS1A09_145T01_9000003848_26622cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26622cztM0_level2_quad_clean.evt
Size (bytes)587,047,68083,073,600
Size559.9 MB 79.2 MB
Events in quadrant A3,662,448522,282
Events in quadrant B4,847,731524,326
Events in quadrant C3,622,842507,542
Events in quadrant D5,183,347486,134

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148860
B0190660
C0146340
D0197510

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68221141.671064%
B68213725.453746%
C68211602.345697%
D682192813.605043%

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 7612 6823 1 1 0.01% 0.01%
B 7611 6822 2 2 0.03% 0.03%
C 7611 6822 1 1 0.01% 0.01%
D 7611 6821 405 405 5.32% 5.94%

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 13 145762 794.78 906 892 182.3
A 5 168 26970 143.07 906 892 182.3
A 13 254 11569 58.58 906 892 182.3
B 0 189 1324281 7811.4 890 870 169.4
B 5 172 22298 126.48 890 870 169.4
B 12 111 19863 112.11 890 870 169.4
C 14 238 139914 676.53 868 876 205.5
C 3 233 71703 344.63 868 876 205.5
C 15 208 29385 138.72 868 876 205.5
D 7 80 1219876 6204.99 809 791 196.5
D 1 52 607986 3090.55 809 791 196.5
D 12 233 94418 476.55 809 791 196.5

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