ASTROSAT CZTI

Data Quality Report

Orbit 27822

Creation date: 2024-06-27T19:44:51.232637
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_048T08_9000004020_27822cztM0_level2.evt modeM0/AS1A10_048T08_9000004020_27822cztM0_level2_quad_clean.evt
Size (bytes)466,205,76092,563,200
Size444.6 MB 88.3 MB
Events in quadrant A3,172,811605,401
Events in quadrant B3,382,194617,321
Events in quadrant C3,903,541576,831
Events in quadrant D3,233,789565,192

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133550
B0139600
C0154910
D0137630

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6280430.684713%
B6280510.812102%
C62802273.614650%
D6280370.589172%

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 7540 6281 12 12 0.16% 0.19%
B 7540 6281 2 2 0.03% 0.03%
C 7540 6281 99 99 1.31% 1.58%
D 7540 6281 21 21 0.28% 0.33%

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 13 248 40869 244.58 810 796 163.8
A 13 254 10671 60.27 810 796 163.8
A 3 137 7462 40.69 810 796 163.8
B 15 33 96290 622.37 810 793 153.4
B 0 230 32820 208.72 810 793 153.4
B 12 111 18123 112.94 810 793 153.4
C 3 233 790043 4429.47 762 767 178.2
C 14 238 124154 692.46 762 767 178.2
C 15 208 16276 87.04 762 767 178.2
D 2 250 127532 689.82 771 750 183.8
D 1 52 124747 674.66 771 750 183.8
D 2 234 27818 147.27 771 750 183.8

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