ASTROSAT CZTI

Data Quality Report

Orbit 30844

Creation date: 2024-06-27T20:20:15.176077
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_071T40_9000004458_30844cztM0_level2.evt modeM0/AS1A10_071T40_9000004458_30844cztM0_level2_quad_clean.evt
Size (bytes)697,775,04087,796,800
Size665.5 MB 83.7 MB
Events in quadrant A3,189,586593,375
Events in quadrant B10,060,425520,390
Events in quadrant C3,655,640551,933
Events in quadrant D3,795,757547,752

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132992
B0342769
C0147002
D0153762

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6369140.219815%
B6368246938.771985%
C63681983.109296%
D6368280.439698%

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 7584 6370 0 0 0.00% 0.00%
B 7582 6368 1927 1927 25.42% 30.26%
C 7583 6368 30 30 0.40% 0.47%
D 7583 6369 13 13 0.17% 0.20%

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 13 254 12013 68.07 824 810 164.6
A 3 137 8234 45.11 824 810 164.6
A 0 226 6831 36.58 824 810 164.6
B 6 36 5394128 38771.89 738 721 139.1
B 6 159 1676697 12048.18 738 721 139.1
B 5 255 20441 141.76 738 721 139.1
C 2 16 193507 1053.93 777 782 182.9
C 0 10 162646 885.17 777 782 182.9
C 14 238 145233 789.94 777 782 182.9
D 8 195 674328 3652.58 781 765 184.4
D 12 218 49123 262.23 781 765 184.4
D 2 250 38487 204.56 781 765 184.4

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