ASTROSAT CZTI

Data Quality Report

Orbit 34583

Creation date: 2022-02-19T19:35:48.561550
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/AS1A05_176T05_9000004944_34583cztM0_level2.evt modeM0/AS1A05_176T05_9000004944_34583cztM0_level2_quad_clean.evt
Size (bytes)222,592,32026,608,320
Size212.3 MB 25.4 MB
Events in quadrant A1,126,822164,053
Events in quadrant B1,399,400161,020
Events in quadrant C1,300,402165,051
Events in quadrant D2,761,316153,613

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A046412
B054491
C050991
D097961

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A223560.268456%
B2235642.863535%
C2235231.029083%
D22351687.516779%

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 4358 2236 2 2 0.05% 0.09%
B 4358 2236 38 38 0.87% 1.70%
C 4358 2236 19 19 0.44% 0.85%
D 4358 2236 139 139 3.19% 6.22%

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 21185 363.41 281 275 57.5
A 9 143 9139 154.06 281 275 57.5
A 15 174 5592 92.41 281 275 57.5
B 5 172 230679 4202.35 275 268 54.8
B 0 189 35467 641.98 275 268 54.8
B 5 255 14011 250.65 275 268 54.8
C 15 214 95978 1470.12 273 275 65.1
C 0 10 77301 1183.22 273 275 65.1
C 0 207 32349 492.7 273 275 65.1
D 8 195 1164442 17411.22 267 259 66.9
D 1 52 199269 2976.34 267 259 66.9
D 2 250 97981 1461.5 267 259 66.9

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