ASTROSAT CZTI

Data Quality Report

Orbit 31993

Creation date: 2024-06-27T20:34:55.938222
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_058T12_9000004674_31993cztM0_level2.evt modeM0/AS1A10_058T12_9000004674_31993cztM0_level2_quad_clean.evt
Size (bytes)595,310,40077,976,000
Size567.7 MB 74.4 MB
Events in quadrant A3,548,317483,451
Events in quadrant B5,426,520475,283
Events in quadrant C4,682,214451,085
Events in quadrant D3,895,203460,556

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147092
B0213932
C0187682
D0160893

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7042881.249645%
B70421692.399886%
C70423795.381994%
D7041851.207215%

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 7717 7042 0 0 0.00% 0.00%
B 7717 7042 1 1 0.01% 0.01%
C 7717 7042 9 9 0.12% 0.13%
D 7716 7041 6 6 0.08% 0.09%

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 13 6 13887 70.78 916 897 183.5
A 13 254 12911 65.46 916 897 183.5
A 3 137 9413 46.4 916 897 183.5
B 6 159 1849179 10632.32 896 874 173.8
B 5 172 21874 120.8 896 874 173.8
B 12 111 21633 119.42 896 874 173.8
C 3 233 977681 4848.34 856 861 201.5
C 14 238 196480 970.93 856 861 201.5
C 14 254 81230 398.9 856 861 201.5
D 8 195 436303 2055.69 885 862 211.8
D 2 250 52396 243.29 885 862 211.8
D 2 234 33126 152.32 885 862 211.8

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