ASTROSAT CZTI

Data Quality Report

Orbit 08690

Creation date: 2024-06-27T15:35:57.867797
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/AS1G07_024T01_9000001206_08690cztM0_level2.evt modeM0/AS1G07_024T01_9000001206_08690cztM0_level2_quad_clean.evt
Size (bytes)476,478,720131,561,280
Size454.4 MB 125.5 MB
Events in quadrant A3,305,994860,950
Events in quadrant B3,756,165885,924
Events in quadrant C3,250,605877,922
Events in quadrant D3,606,109836,660

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152832
B0163201
C0152451
D0163721

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75211041.382795%
B75211702.260338%
C7521610.811062%
D75211091.449275%

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 7821 7521 2 2 0.03% 0.03%
B 7821 7522 46 46 0.59% 0.61%
C 7821 7522 0 0 0.00% 0.00%
D 7821 7522 43 43 0.55% 0.57%

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 5 16 21041 115.22 842 822 175.5
A 15 236 17817 96.85 842 822 175.5
A 15 174 16337 88.41 842 822 175.5
B 10 16 281904 1718.36 849 827 163.6
B 0 219 62691 378.2 849 827 163.6
B 4 80 41185 246.73 849 827 163.6
C 4 254 29435 149.98 822 824 190.8
C 13 61 6252 28.45 822 824 190.8
C 8 222 5396 23.97 822 824 190.8
D 12 233 259486 1290.29 816 789 200.5
D 2 152 82629 408.19 816 789 200.5
D 7 71 63843 314.49 816 789 200.5

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter