ASTROSAT CZTI

Data Quality Report

Orbit 35350

Creation date: 2022-04-12T15:13:29.272747
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_093T01_9000005064_35350cztM0_level2.evt modeM0/AS1A11_093T01_9000005064_35350cztM0_level2_quad_clean.evt
Size (bytes)461,514,24073,834,560
Size440.1 MB 70.4 MB
Events in quadrant A2,507,182477,372
Events in quadrant B2,753,493486,297
Events in quadrant C3,138,963477,520
Events in quadrant D5,236,724442,336

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103873
B0111762
C0122952
D0191432

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A501890.179354%
B5018731.454763%
C50181232.451176%
D50183276.516540%

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 7141 5019 2 2 0.03% 0.04%
B 7141 5019 58 58 0.81% 1.16%
C 7141 5019 115 115 1.61% 2.29%
D 7141 5019 328 328 4.59% 6.54%

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 10 83 110290 900.92 608 598 121.8
A 9 143 18102 143.76 608 598 121.8
A 13 6 15349 121.15 608 598 121.8
B 5 236 217227 1920.66 596 581 112.8
B 5 172 122102 1077.34 596 581 112.8
B 4 232 32839 285.98 596 581 112.8
C 0 10 327539 2463.93 577 582 132.7
C 3 233 239178 1798.05 577 582 132.7
C 15 214 213748 1606.41 577 582 132.7
D 7 80 1472039 10682.03 574 559 137.8
D 8 195 500771 3631.22 574 559 137.8
D 2 152 385139 2791.81 574 559 137.8

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