ASTROSAT CZTI

Data Quality Report

Orbit 30995

Creation date: 2024-06-27T20:22:04.521700
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_071T48_9000004478_30995cztM0_level2.evt modeM0/AS1A10_071T48_9000004478_30995cztM0_level2_quad_clean.evt
Size (bytes)572,662,08076,345,920
Size546.1 MB 72.8 MB
Events in quadrant A3,570,933464,930
Events in quadrant B5,687,800460,293
Events in quadrant C3,742,821443,763
Events in quadrant D3,850,860438,539

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150231
B0222293
C0155261
D0161401

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72361772.446103%
B72362703.731343%
C72362172.998894%
D72361532.114428%

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 7446 7236 0 0 0.00% 0.00%
B 7446 7236 9 9 0.12% 0.12%
C 7446 7236 2 2 0.03% 0.03%
D 7446 7236 36 36 0.48% 0.50%

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 11 47 62714 332.47 909 888 186.0
A 13 254 13179 66.1 909 888 186.0
A 3 137 9443 46.0 909 888 186.0
B 6 159 1991957 11320.78 895 869 175.9
B 4 80 72389 406.64 895 869 175.9
B 0 230 30612 169.11 895 869 175.9
C 0 10 181111 878.49 866 871 205.2
C 14 238 139000 673.24 866 871 205.2
C 2 114 16828 77.77 866 871 205.2
D 1 239 247810 1178.5 873 850 209.6
D 8 195 143702 681.7 873 850 209.6
D 2 250 124732 591.17 873 850 209.6

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