ASTROSAT CZTI

Data Quality Report

Orbit 28940

Creation date: 2024-06-27T19:58:18.951337
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/AS1A10_082T04_9000004150_28940cztM0_level2.evt modeM0/AS1A10_082T04_9000004150_28940cztM0_level2_quad_clean.evt
Size (bytes)626,299,20090,348,480
Size597.3 MB 86.2 MB
Events in quadrant A3,165,317584,200
Events in quadrant B3,251,470600,593
Events in quadrant C3,215,631577,065
Events in quadrant D8,873,361499,196

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139381
B0140841
C0139881
D0310421

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6802801.176125%
B6803861.264148%
C68031311.925621%
D6803204130.001470%

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 7001 6802 0 0 0.00% 0.00%
B 7003 6804 0 0 0.00% 0.00%
C 7003 6804 0 0 0.00% 0.00%
D 7003 6804 1946 1946 27.79% 28.60%

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 12 96 12764 72.32 817 798 165.5
A 13 254 10937 61.28 817 798 165.5
A 3 137 8376 45.8 817 798 165.5
B 10 245 37038 231.35 810 787 156.7
B 12 111 19505 119.46 810 787 156.7
B 11 111 17898 109.2 810 787 156.7
C 14 238 137270 742.36 780 781 183.9
C 14 254 16441 85.17 780 781 183.9
C 2 114 15625 80.74 780 781 183.9
D 8 195 3541539 21348.33 690 667 165.9
D 1 52 2627898 15839.88 690 667 165.9
D 12 79 75401 450.58 690 667 165.9

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