ASTROSAT CZTI

Data Quality Report

Orbit 23043

Creation date: 2024-06-27T18:49:10.001636
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/AS1C05_004T01_9000003404_23043cztM0_level2.evt modeM0/AS1C05_004T01_9000003404_23043cztM0_level2_quad_clean.evt
Size (bytes)450,875,520106,032,960
Size430.0 MB 101.1 MB
Events in quadrant A3,058,738698,994
Events in quadrant B3,264,227727,622
Events in quadrant C3,320,212688,793
Events in quadrant D3,593,803666,718

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130112
B0135212
C0136992
D0146422

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6151200.325150%
B6151580.942936%
C61511362.211023%
D61511442.341083%

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 7531 6152 0 0 0.00% 0.00%
B 7531 6152 16 16 0.21% 0.26%
C 7531 6152 47 47 0.62% 0.76%
D 7531 6152 96 96 1.27% 1.56%

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 6 16 16684 103.0 788 772 154.5
A 13 254 9583 57.03 788 772 154.5
A 0 226 6866 39.45 788 772 154.5
B 4 216 65854 443.26 799 780 146.8
B 3 209 24462 161.31 799 780 146.8
B 3 64 18430 120.22 799 780 146.8
C 0 10 150877 837.37 774 779 179.2
C 14 238 124062 687.77 774 779 179.2
C 0 207 28004 151.88 774 779 179.2
D 13 153 371428 1994.4 773 752 185.9
D 1 52 218950 1174.0 773 752 185.9
D 2 234 22647 117.8 773 752 185.9

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