ASTROSAT CZTI

Data Quality Report

Orbit 32403

Creation date: 2024-06-27T20:39:49.130403
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/AS1T04_059T01_9000004704_32403cztM0_level2.evt modeM0/AS1T04_059T01_9000004704_32403cztM0_level2_quad_clean.evt
Size (bytes)885,988,800109,405,440
Size844.9 MB 104.3 MB
Events in quadrant A3,698,273741,605
Events in quadrant B13,057,213601,714
Events in quadrant C4,625,449710,690
Events in quadrant D4,910,608701,887

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161782
B0443121
C0185731
D0196531

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8002730.912272%
B8002374046.738315%
C80023814.761310%
D80021942.424394%

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 8502 8003 0 0 0.00% 0.00%
B 8502 8003 2801 2801 32.95% 35.00%
C 8502 8003 196 196 2.31% 2.45%
D 8502 8003 129 129 1.52% 1.61%

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 13 254 15900 78.38 953 932 191.0
A 13 6 10169 48.37 953 932 191.0
A 3 137 9701 45.92 953 932 191.0
B 4 80 7677189 50049.03 792 769 153.4
B 6 159 1855393 12091.85 792 769 153.4
B 10 245 147964 959.69 792 769 153.4
C 3 233 809871 3802.51 902 906 212.7
C 14 238 154518 722.05 902 906 212.7
C 14 67 56170 259.77 902 906 212.7
D 12 233 550837 2495.44 923 898 220.4
D 1 47 256721 1160.84 923 898 220.4
D 8 195 239504 1082.72 923 898 220.4

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