ASTROSAT CZTI

Data Quality Report

Orbit 11420

Creation date: 2024-06-27T16:12:39.418497
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/AS1A04_024T04_9000001670_11420cztM0_level2.evt modeM0/AS1A04_024T04_9000001670_11420cztM0_level2_quad_clean.evt
Size (bytes)561,732,48065,361,600
Size535.7 MB 62.3 MB
Events in quadrant A4,635,403394,558
Events in quadrant B5,855,938390,860
Events in quadrant C2,932,253391,345
Events in quadrant D3,176,912377,925

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178842
B0215151
C0125791
D0133651

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60734026.619463%
B607392115.165487%
C6073611.004446%
D6073881.449037%

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 7378 6074 168 168 2.28% 2.77%
B 7378 6074 541 541 7.33% 8.91%
C 7378 6074 2 2 0.03% 0.03%
D 7378 6074 18 18 0.24% 0.30%

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 5 1556639 10105.29 769 756 154.0
A 1 162 33152 210.41 769 756 154.0
A 15 174 17608 109.45 769 756 154.0
B 4 239 1360043 9899.0 743 728 137.3
B 3 64 1172105 8530.37 743 728 137.3
B 11 51 174335 1264.27 743 728 137.3
C 0 207 19591 111.09 747 750 169.6
C 13 61 5584 28.5 747 750 169.6
C 8 222 2442 9.98 747 750 169.6
D 13 137 61553 340.48 750 730 178.6
D 2 120 61505 340.21 750 730 178.6
D 1 52 54780 302.57 750 730 178.6

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