ASTROSAT CZTI

Data Quality Report

Orbit 32335

Creation date: 2024-06-27T20:38:59.909762
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_005T01_9000004700_32335cztM0_level2.evt modeM0/AS1A10_005T01_9000004700_32335cztM0_level2_quad_clean.evt
Size (bytes)704,229,12089,979,840
Size671.6 MB 85.8 MB
Events in quadrant A3,161,682633,849
Events in quadrant B7,655,609510,840
Events in quadrant C3,715,326583,889
Events in quadrant D6,373,534559,550

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134242
B0272871
C0150981
D0234981

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6241320.512738%
B6241142822.880949%
C62412814.502484%
D62413044.871014%

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 7441 6242 1 1 0.01% 0.02%
B 7441 6242 990 990 13.30% 15.86%
C 7441 6241 48 48 0.65% 0.77%
D 7441 6242 237 237 3.19% 3.80%

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 12 189 50211 312.29 794 779 158.3
A 13 6 18067 109.22 794 779 158.3
A 12 96 16854 101.56 794 779 158.3
B 5 172 2809810 21327.5 703 687 131.7
B 6 159 1826973 13865.58 703 687 131.7
B 0 190 60831 456.63 703 687 131.7
C 14 238 174155 999.51 746 751 173.5
C 0 207 127972 733.31 746 751 173.5
C 3 233 113574 650.32 746 751 173.5
D 8 195 2429464 13477.77 756 736 180.2
D 12 218 253408 1402.16 756 736 180.2
D 12 233 227968 1260.98 756 736 180.2

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