ASTROSAT CZTI

Data Quality Report

Orbit 03922

Creation date: 2024-06-27T14:35:15.867071
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/AS1G05_172T01_9000000502_03922cztM0_level2.evt modeM0/AS1G05_172T01_9000000502_03922cztM0_level2_quad_clean.evt
Size (bytes)434,652,48055,831,680
Size414.5 MB 53.2 MB
Events in quadrant A3,548,772315,638
Events in quadrant B3,056,311324,306
Events in quadrant C2,875,272320,319
Events in quadrant D3,268,980304,393

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143933
B0128122
C0125112
D0139092

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6093901.477105%
B6093430.705728%
C6093240.393895%
D6093861.411456%

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 7433 6094 28 28 0.38% 0.46%
B 7433 6094 0 0 0.00% 0.00%
C 7433 6094 1 1 0.01% 0.02%
D 7433 6094 66 66 0.89% 1.08%

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 8 15 440519 2931.97 747 733 150.0
A 0 118 131469 871.59 747 733 150.0
A 0 50 55899 367.78 747 733 150.0
B 15 204 54033 371.41 760 742 143.5
B 3 0 34180 233.04 760 742 143.5
B 0 229 16962 113.04 760 742 143.5
C 10 65 15152 86.31 730 736 167.0
C 13 61 6256 33.05 730 736 167.0
C 7 221 5176 26.58 730 736 167.0
D 2 232 284090 1672.29 716 696 169.5
D 12 233 45756 265.9 716 696 169.5
D 13 239 43349 251.69 716 696 169.5

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
Veto Counter