ASTROSAT CZTI

Data Quality Report

Orbit 06177

Creation date: 2024-06-27T15:03:47.032424
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/AS1G06_139T05_9000000804_06177cztM0_level2.evt modeM0/AS1G06_139T05_9000000804_06177cztM0_level2_quad_clean.evt
Size (bytes)459,002,88080,017,920
Size437.7 MB 76.3 MB
Events in quadrant A3,294,293494,124
Events in quadrant B3,978,901500,130
Events in quadrant C2,999,321497,142
Events in quadrant D3,186,763478,826

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171
B0170
C0172
D0181

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01342
B01342
C01346
D01342

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014416404
B016449405
C013714305
D014079285

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6484741.141271%
B64953565.481139%
C6500450.692308%
D6505560.860876%

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 7733 6598 0 0 0.00% 0.00%
B 7733 6613 215 215 2.78% 3.25%
C 7733 6609 0 0 0.00% 0.00%
D 7733 6615 5 5 0.06% 0.08%

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 13 34 137772 858.62 781 764 159.6
A 8 15 94112 585.01 781 764 159.6
A 15 234 46948 289.43 781 764 159.6
B 3 64 905407 6142.87 773 755 147.3
B 4 80 56332 377.39 773 755 147.3
B 12 111 14857 95.76 773 755 147.3
C 12 16 26512 146.88 759 762 175.3
C 1 16 6064 30.24 759 762 175.3
C 13 61 5866 29.11 759 762 175.3
D 2 136 134720 715.7 760 735 187.2
D 12 110 111218 590.16 760 735 187.2
D 5 97 29580 154.08 760 735 187.2

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