ASTROSAT CZTI

Data Quality Report

Orbit 34485

Creation date: 2022-02-13T04:57:12.384043
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_071T14_9000004924_34485cztM0_level2.evt modeM0/AS1A10_071T14_9000004924_34485cztM0_level2_quad_clean.evt
Size (bytes)576,976,32078,120,000
Size550.2 MB 74.5 MB
Events in quadrant A4,636,353475,400
Events in quadrant B4,535,883489,749
Events in quadrant C3,398,217487,755
Events in quadrant D4,469,617466,139

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181183
B0178252
C0140792
D0176402

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A639275511.811640%
B63925658.839174%
C6392340.531915%
D63922403.754693%

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 9257 6394 479 479 5.17% 7.49%
B 9257 6394 335 335 3.62% 5.24%
C 9257 6394 23 23 0.25% 0.36%
D 9257 6394 183 183 1.98% 2.86%

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 1794227 12530.14 713 700 143.1
A 10 83 36454 249.79 713 700 143.1
A 9 143 17061 114.3 713 700 143.1
B 5 172 1269939 9075.94 722 705 139.8
B 0 189 134904 959.62 722 705 139.8
B 0 229 134761 958.6 722 705 139.8
C 15 214 270556 1592.94 733 739 169.4
C 15 208 107589 630.82 733 739 169.4
C 0 10 94438 553.18 733 739 169.4
D 8 195 659265 3680.6 723 703 178.9
D 2 250 544282 3037.98 723 703 178.9
D 13 249 87955 487.64 723 703 178.9

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