ASTROSAT CZTI

Data Quality Report

Orbit 14921

Creation date: 2024-06-27T17:01:21.311214
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_099T01_9000002204_14921cztM0_level2.evt modeM0/AS1A04_099T01_9000002204_14921cztM0_level2_quad_clean.evt
Size (bytes)433,483,20085,780,800
Size413.4 MB 81.8 MB
Events in quadrant A3,147,181554,396
Events in quadrant B3,271,386561,548
Events in quadrant C3,246,532527,481
Events in quadrant D3,040,401520,138

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130503
B0134562
C0133422
D0130062

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6221430.691207%
B6221610.980550%
C6221460.739431%
D6221300.482238%

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 7437 6224 0 0 0.00% 0.00%
B 7437 6224 11 11 0.15% 0.18%
C 7437 6224 19 19 0.26% 0.31%
D 7437 6224 5 5 0.07% 0.08%

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 0 226 7398 40.18 817 803 164.1
A 12 194 5783 30.34 817 803 164.1
A 12 189 5688 29.76 817 803 164.1
B 10 16 96593 620.73 810 793 154.3
B 12 111 18612 115.46 810 793 154.3
B 11 111 15783 97.13 810 793 154.3
C 3 233 126467 710.02 773 780 177.0
C 9 236 103619 580.95 773 780 177.0
C 13 61 5525 26.8 773 780 177.0
D 7 223 33199 175.41 776 758 184.9
D 4 95 32692 172.67 776 758 184.9
D 13 249 21678 113.11 776 758 184.9

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