ASTROSAT CZTI

Data Quality Report

Orbit 34949

Creation date: 2022-03-16T14:00:25.054978
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/AS1A11_047T09_9000005010_34949cztM0_level2.evt modeM0/AS1A11_047T09_9000005010_34949cztM0_level2_quad_clean.evt
Size (bytes)794,200,32057,962,880
Size757.4 MB 55.3 MB
Events in quadrant A10,002,348173,185
Events in quadrant B5,836,555380,094
Events in quadrant C3,182,650404,412
Events in quadrant D4,613,057363,961

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0337423
B0215272
C0130212
D0178982

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6188349256.431803%
B618898415.901745%
C6188490.791855%
D61883004.848093%

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 8814 6188 3351 3351 38.02% 54.15%
B 8815 6190 734 734 8.33% 11.86%
C 8815 6190 40 40 0.45% 0.65%
D 8815 6189 281 281 3.19% 4.54%

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 15 169 8246680 93518.82 436 428 88.2
A 10 83 48442 544.52 436 428 88.2
A 13 254 6311 66.72 436 428 88.2
B 5 172 1959995 15349.17 661 644 127.7
B 5 31 603580 4723.28 661 644 127.7
B 5 15 386927 3026.06 661 644 127.7
C 15 214 259684 1609.69 693 698 160.9
C 0 10 176565 1093.07 693 698 160.9
C 14 67 32317 196.52 693 698 160.9
D 8 195 766456 4590.67 679 661 166.8
D 10 118 319091 1908.87 679 661 166.8
D 2 31 276861 1655.72 679 661 166.8

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