ASTROSAT CZTI

Data Quality Report

Orbit 18016

Creation date: 2024-06-27T17:43:54.518243
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/AS1A05_159T01_9000002678_18016cztM0_level2.evt modeM0/AS1A05_159T01_9000002678_18016cztM0_level2_quad_clean.evt
Size (bytes)488,574,72085,236,480
Size465.9 MB 81.3 MB
Events in quadrant A3,470,622538,515
Events in quadrant B3,525,508541,578
Events in quadrant C3,530,549521,307
Events in quadrant D3,808,849506,642

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142952
B0144792
C0144972
D0156662

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6779941.386635%
B67801161.710914%
C67801241.828909%
D67801091.607670%

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 8764 6780 2 2 0.02% 0.03%
B 8765 6780 4 4 0.05% 0.06%
C 8765 6782 0 0 0.00% 0.00%
D 8765 6781 47 47 0.54% 0.69%

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 15 174 50996 280.78 885 870 178.5
A 4 2 18256 97.39 885 870 178.5
A 0 226 7511 37.2 885 870 178.5
B 0 197 24725 139.54 885 863 171.0
B 12 111 20004 111.93 885 863 171.0
B 11 111 17093 94.91 885 863 171.0
C 14 238 131019 660.5 842 851 197.1
C 3 233 66450 332.86 842 851 197.1
C 0 207 38704 192.07 842 851 197.1
D 7 238 494397 2339.88 852 827 210.9
D 5 222 45175 210.24 852 827 210.9
D 2 234 27877 128.23 852 827 210.9

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