ASTROSAT CZTI

Data Quality Report

Orbit 36473

Creation date: 2022-06-27T11:57:22.693064
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_049T02_9000005206_36473cztM0_level2.evt modeM0/AS1A11_049T02_9000005206_36473cztM0_level2_quad_clean.evt
Size (bytes)426,139,20062,320,320
Size406.4 MB 59.4 MB
Events in quadrant A2,763,671381,763
Events in quadrant B3,100,962378,015
Events in quadrant C2,979,008376,086
Events in quadrant D3,676,029353,745

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117733
B0127462
C0122502
D0148122

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A568370.123174%
B5683711.249340%
C5683560.985395%
D56832013.536864%

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 7296 5684 0 0 0.00% 0.00%
B 7296 5684 33 33 0.45% 0.58%
C 7296 5684 36 36 0.49% 0.63%
D 7296 5684 170 170 2.33% 2.99%

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 200647 1495.61 657 644 133.7
A 9 143 11621 82.09 657 644 133.7
A 13 6 9266 64.47 657 644 133.7
B 5 255 199488 1601.04 647 630 124.2
B 15 85 71579 571.22 647 630 124.2
B 0 189 59972 477.77 647 630 124.2
C 0 10 248966 1677.86 633 636 148.0
C 15 214 246536 1661.44 633 636 148.0
C 0 207 11829 75.63 633 636 148.0
D 13 249 461814 2996.97 629 610 153.9
D 1 52 380879 2471.04 629 610 153.9
D 2 153 94524 610.27 629 610 153.9

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