ASTROSAT CZTI

Data Quality Report

Orbit 26791

Creation date: 2024-06-27T19:32:58.839600
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/AS1A09_079T01_9000003864_26791cztM0_level2.evt modeM0/AS1A09_079T01_9000003864_26791cztM0_level2_quad_clean.evt
Size (bytes)529,309,440124,142,400
Size504.8 MB 118.4 MB
Events in quadrant A4,661,168813,043
Events in quadrant B3,383,309857,371
Events in quadrant C3,500,764838,058
Events in quadrant D4,058,438811,998

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182820
B0139530
C0142940
D0163350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62981001.587806%
B6298450.714513%
C6298901.429025%
D6298771.222610%

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 7583 6299 32 32 0.42% 0.51%
B 7583 6299 1 1 0.01% 0.02%
C 7583 6299 9 9 0.12% 0.14%
D 7583 6299 52 52 0.69% 0.83%

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 13 1474088 8997.71 825 809 163.7
A 13 254 9948 55.81 825 809 163.7
A 0 226 6949 37.5 825 809 163.7
B 3 64 63619 414.89 834 817 151.4
B 10 246 33577 216.42 834 817 151.4
B 12 111 18019 113.64 834 817 151.4
C 14 238 134834 700.07 830 837 191.4
C 15 208 104341 540.76 830 837 191.4
C 2 16 21016 105.43 830 837 191.4
D 15 21 324246 1653.41 827 810 195.6
D 1 52 286305 1459.46 827 810 195.6
D 7 80 187357 953.63 827 810 195.6

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