ASTROSAT CZTI

Data Quality Report

Orbit 20840

Creation date: 2024-06-27T18:20:13.313557
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/AS1C04_001T01_9000003074_20840cztM0_level2.evt modeM0/AS1C04_001T01_9000003074_20840cztM0_level2_quad_clean.evt
Size (bytes)516,064,320100,180,800
Size492.2 MB 95.5 MB
Events in quadrant A3,224,939659,472
Events in quadrant B3,647,663656,577
Events in quadrant C3,147,882634,771
Events in quadrant D5,157,244619,839

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139242
B0152552
C0136772
D0198045

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6655240.360631%
B6655801.202104%
C6655440.661157%
D665488613.315299%

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 7770 6655 6 6 0.08% 0.09%
B 7770 6655 32 32 0.41% 0.48%
C 7770 6655 0 0 0.00% 0.00%
D 7768 6653 808 808 10.40% 12.14%

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 5 16 47073 286.18 810 794 161.7
A 2 79 45519 276.57 810 794 161.7
A 6 16 16662 98.12 810 794 161.7
B 7 220 194169 1285.45 805 788 150.4
B 5 172 60001 393.6 805 788 150.4
B 0 189 57130 374.52 805 788 150.4
C 14 238 122575 680.67 775 779 178.9
C 13 61 5381 25.72 775 779 178.9
C 3 233 2581 10.07 775 779 178.9
D 1 52 2288836 13455.7 707 686 170.1
D 1 20 58244 338.48 707 686 170.1
D 13 153 47212 273.6 707 686 170.1

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