ASTROSAT CZTI

Data Quality Report

Orbit 28620

Creation date: 2024-06-27T19:54:06.146031
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/AS1A10_045T06_9000004108_28620cztM0_level2.evt modeM0/AS1A10_045T06_9000004108_28620cztM0_level2_quad_clean.evt
Size (bytes)610,361,28076,305,600
Size582.1 MB 72.8 MB
Events in quadrant A3,591,776461,479
Events in quadrant B3,819,385462,492
Events in quadrant C3,883,129451,913
Events in quadrant D6,706,343436,547

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150443
B0158102
C0159012
D0249112

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71391241.736938%
B71402153.011204%
C71402142.997199%
D71406148.599440%

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 7714 7139 1 1 0.01% 0.01%
B 7715 7140 28 28 0.36% 0.39%
C 7715 7140 3 3 0.04% 0.04%
D 7715 7140 377 377 4.89% 5.28%

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 15 174 30019 156.28 919 898 186.3
A 13 254 12851 64.15 919 898 186.3
A 15 47 9275 44.95 919 898 186.3
B 10 245 115617 658.47 903 880 174.2
B 10 246 76336 433.04 903 880 174.2
B 4 171 43976 247.33 903 880 174.2
C 3 233 226328 1084.64 882 889 207.8
C 14 238 146868 702.34 882 889 207.8
C 7 247 36516 171.41 882 889 207.8
D 1 52 1978189 9317.1 871 846 212.2
D 8 195 1123180 5288.36 871 846 212.2
D 2 250 157649 738.84 871 846 212.2

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