ASTROSAT CZTI

Data Quality Report

Orbit 12915

Creation date: 2024-06-27T16:33:54.876885
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/AS1A04_116T01_9000001896_12915cztM0_level2.evt modeM0/AS1A04_116T01_9000001896_12915cztM0_level2_quad_clean.evt
Size (bytes)600,456,960120,839,040
Size572.6 MB 115.2 MB
Events in quadrant A4,447,048797,786
Events in quadrant B5,194,655765,109
Events in quadrant C3,310,722810,441
Events in quadrant D4,726,501766,915

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182183
B0204062
C0152402
D0191562

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74633114.167225%
B746380710.813346%
C7463250.334986%
D74632833.792041%

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 7574 7467 143 143 1.89% 1.92%
B 7574 7467 371 371 4.90% 4.97%
C 7574 7467 3 3 0.04% 0.04%
D 7574 7467 133 133 1.76% 1.78%

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 15 223 591112 3339.01 866 849 176.8
A 15 239 235039 1324.77 866 849 176.8
A 15 174 54530 303.66 866 849 176.8
B 4 239 1576992 10091.36 829 806 156.2
B 3 64 228848 1460.01 829 806 156.2
B 3 209 83782 531.24 829 806 156.2
C 3 233 6810 30.47 844 848 195.7
C 13 61 6274 27.73 844 848 195.7
C 8 222 5993 26.3 844 848 195.7
D 1 52 1361810 6827.36 833 808 199.3
D 8 195 123494 615.44 833 808 199.3
D 2 234 38374 188.45 833 808 199.3

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