ASTROSAT CZTI

Data Quality Report

Orbit 19715

Creation date: 2024-06-27T18:05:55.439854
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/AS1A05_013T01_9000002944_19715cztM0_level2.evt modeM0/AS1A05_013T01_9000002944_19715cztM0_level2_quad_clean.evt
Size (bytes)452,661,12084,836,160
Size431.7 MB 80.9 MB
Events in quadrant A3,213,671536,981
Events in quadrant B3,322,670555,304
Events in quadrant C3,382,756527,452
Events in quadrant D3,358,690506,542

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133372
B0136132
C0136252
D0139432

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6348140.220542%
B6348370.582861%
C6348500.787650%
D6348620.976686%

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 7723 6349 1 1 0.01% 0.02%
B 7723 6348 7 7 0.09% 0.11%
C 7723 6349 0 0 0.00% 0.00%
D 7723 6348 31 31 0.40% 0.49%

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 10 253 51206 308.18 817 803 163.5
A 0 23 17764 103.71 817 803 163.5
A 0 226 7929 43.57 817 803 163.5
B 7 220 31258 198.54 826 807 153.4
B 4 171 26916 170.23 826 807 153.4
B 12 111 18099 112.74 826 807 153.4
C 14 238 127756 695.36 797 805 182.6
C 3 233 70454 381.49 797 805 182.6
C 7 247 45809 246.5 797 805 182.6
D 1 52 173663 896.18 795 773 192.9
D 12 218 62697 320.99 795 773 192.9
D 2 16 60998 312.18 795 773 192.9

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