ASTROSAT CZTI

Data Quality Report

Orbit 40464

Creation date: 2024-06-27T22:16:26.508613
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/AS1A12_022T01_9000005540_40464cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40464cztM0_level2_quad_clean.evt
Size (bytes)319,478,40088,977,600
Size304.7 MB 84.9 MB
Events in quadrant A2,811,626611,010
Events in quadrant B2,695,414619,266
Events in quadrant C2,721,802594,413
Events in quadrant D3,166,108482,702

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119703
B0117192
C0116872
D0133272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5522170.307859%
B5522470.851141%
C5522240.434625%
D552277914.107208%

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 9168 5524 7 7 0.08% 0.13%
B 9168 5524 32 32 0.35% 0.58%
C 9168 5524 18 18 0.20% 0.33%
D 9168 5524 61 61 0.67% 1.10%

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 490370 4105.38 586 575 119.3
A 3 1 35629 293.81 586 575 119.3
A 7 3 15268 123.15 586 575 119.3
B 4 170 198345 1754.26 581 565 112.7
B 0 230 84950 748.47 581 565 112.7
B 3 112 75647 665.96 581 565 112.7
C 15 214 239386 1786.54 575 578 133.7
C 14 254 219563 1638.24 575 578 133.7
C 0 10 11001 77.97 575 578 133.7
D 12 227 311296 2404.46 527 512 129.3
D 2 250 246501 1903.16 527 512 129.3
D 12 191 197474 1523.85 527 512 129.3

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