ASTROSAT CZTI

Data Quality Report

Orbit 20221130_A12_044T04_9000005396_level2

Creation date: 2022-12-02T11:35:54.571024
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_044T04_9000005396cztM0_level2.fits modeM0/AS1A12_044T04_9000005396cztM0_level2_quad_clean.evt
Size (bytes)419,304,960368,648,640
Size399.9 MB 351.6 MB
Events in quadrant A2,531,4002,155,001
Events in quadrant B2,445,6522,144,027
Events in quadrant C2,509,9962,081,721
Events in quadrant D2,057,2741,629,848

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000060
B01029390
C0980800
D01610700

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09380
B09380
C09380
D09380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01840
B01840
C01840
D01840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A459321510.328747%
B459327441.619786%
C459322340.509449%
D45932471610.267352%

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 64281 45932 0 0 0.00% 0.00%
B 64281 45931 0 0 0.00% 0.00%
C 64281 45932 0 0 0.00% 0.00%
D 64281 45873 0 0 0.00% 0.00%

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 0 29 2110 8.95 661 621 166.3
A 9 19 2041 8.54 661 621 166.3
A 7 110 2012 8.36 661 621 166.3
B 2 9 2105 11.7 647 618 127.1
B 3 80 1896 10.06 647 618 127.1
B 5 128 1722 8.69 647 618 127.1
C 1 81 1981 7.98 665 625 169.8
C 1 80 1854 7.24 665 625 169.8
C 3 187 1699 6.32 665 625 169.8
D 7 3 1540 6.36 587 535 157.9
D 4 160 1531 6.31 587 535 157.9
D 10 113 1523 6.26 587 535 157.9

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