ASTROSAT CZTI

Data Quality Report

Orbit 22391

Creation date: 2024-06-27T18:40:12.089712
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/AS1A07_007T04_9000003310_22391cztM0_level2.evt modeM0/AS1A07_007T04_9000003310_22391cztM0_level2_quad_clean.evt
Size (bytes)462,758,40098,458,560
Size441.3 MB 93.9 MB
Events in quadrant A3,056,133650,336
Events in quadrant B3,179,379668,800
Events in quadrant C3,142,118635,861
Events in quadrant D4,222,371600,381

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129992
B0133342
C0131992
D0166582

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6109110.180062%
B6109320.523817%
C6109600.982157%
D61091001.636929%

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 7444 6110 0 0 0.00% 0.00%
B 7444 6110 3 3 0.04% 0.05%
C 7444 6109 0 0 0.00% 0.00%
D 7444 6110 69 69 0.93% 1.13%

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 13 254 8774 50.56 793 778 158.2
A 0 226 6892 38.66 793 778 158.2
A 3 137 6160 34.03 793 778 158.2
B 0 245 19920 130.38 796 779 146.8
B 0 190 18198 118.65 796 779 146.8
B 12 111 16826 109.31 796 779 146.8
C 14 238 124044 691.12 772 779 178.4
C 13 61 5260 25.12 772 779 178.4
C 0 10 3627 15.97 772 779 178.4
D 12 227 770128 4152.64 769 747 185.3
D 1 52 328131 1767.01 769 747 185.3
D 15 145 104218 558.47 769 747 185.3

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