ASTROSAT CZTI

Data Quality Report

Orbit 02940

Creation date: 2024-06-27T14:22:29.553425
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/AS1P01_999T99_9000000414_02940cztM0_level2.evt modeM0/AS1P01_999T99_9000000414_02940cztM0_level2_quad_clean.evt
Size (bytes)544,403,52045,028,800
Size519.2 MB 42.9 MB
Events in quadrant A2,655,415268,618
Events in quadrant B2,985,655269,558
Events in quadrant C2,910,619251,995
Events in quadrant D7,597,227222,239

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116363
B0122512
C0122872
D0261222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4998631.260504%
B49981112.220888%
C49982605.202081%
D4998186937.394958%

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 7155 4999 56 56 0.78% 1.12%
B 7155 4999 93 93 1.30% 1.86%
C 7155 4999 121 121 1.69% 2.42%
D 7155 4999 1322 1322 18.48% 26.45%

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 14 63 446205 4217.38 519 509 105.7
A 8 15 70205 659.5 519 509 105.7
A 0 31 51787 485.22 519 509 105.7
B 3 27 676700 6693.31 523 513 101.0
B 8 3 70139 689.2 523 513 101.0
B 0 219 27688 268.99 523 513 101.0
C 0 219 699354 6024.66 500 503 116.0
C 6 80 101313 869.06 500 503 116.0
C 9 204 40204 342.25 500 503 116.0
D 15 50 2250898 20761.37 428 420 108.4
D 15 194 1442289 13301.7 428 420 108.4
D 14 97 638523 5886.7 428 420 108.4

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
Veto Counter