ASTROSAT CZTI

Data Quality Report

Orbit 36206

Creation date: 2022-06-09T20:32:12.079165
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_080T02_9000005176_36206cztM0_level2.evt modeM0/AS1A11_080T02_9000005176_36206cztM0_level2_quad_clean.evt
Size (bytes)553,224,96055,584,000
Size527.6 MB 53.0 MB
Events in quadrant A2,990,641338,421
Events in quadrant B3,163,132338,535
Events in quadrant C6,092,115309,566
Events in quadrant D4,139,492314,514

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121483
B0129682
C0217232
D0158962

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5445180.330579%
B54451262.314050%
C544590516.620753%
D54454678.576676%

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 7268 5446 9 9 0.12% 0.17%
B 7268 5446 86 86 1.18% 1.58%
C 7267 5445 789 789 10.86% 14.49%
D 7268 5446 419 419 5.76% 7.69%

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 15 223 223722 1759.06 626 614 126.8
A 10 83 181343 1424.93 626 614 126.8
A 8 144 81861 640.58 626 614 126.8
B 5 172 510584 4268.07 619 602 119.5
B 0 213 108151 900.08 619 602 119.5
B 0 190 68027 564.28 619 602 119.5
C 4 254 2636791 19895.69 572 575 132.5
C 15 208 785321 5922.53 572 575 132.5
C 15 214 234017 1761.8 572 575 132.5
D 12 227 973814 6684.45 590 573 145.6
D 12 6 359063 2462.2 590 573 145.6
D 13 171 152450 1043.13 590 573 145.6

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