ASTROSAT CZTI

Data Quality Report

Orbit 22766

Creation date: 2024-06-27T18:45:24.661641
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/AS1C05_001T01_9000003366_22766cztM0_level2.evt modeM0/AS1C05_001T01_9000003366_22766cztM0_level2_quad_clean.evt
Size (bytes)455,901,120130,731,840
Size434.8 MB 124.7 MB
Events in quadrant A3,043,870902,429
Events in quadrant B3,161,880914,320
Events in quadrant C3,116,947875,009
Events in quadrant D4,070,921842,881

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129181
B0132121
C0131771
D0160171

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6093580.951912%
B6093721.181684%
C6093961.575579%
D60922774.546947%

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 7278 6094 0 0 0.00% 0.00%
B 7278 6094 1 1 0.01% 0.02%
C 7278 6094 0 0 0.00% 0.00%
D 7277 6093 200 200 2.75% 3.28%

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 10936 64.93 788 773 156.5
A 0 226 6734 38.08 788 773 156.5
A 3 137 6134 34.25 788 773 156.5
B 0 228 22721 152.75 784 765 143.7
B 0 230 19055 127.24 784 765 143.7
B 0 190 18139 120.87 784 765 143.7
C 14 238 124760 712.36 762 768 174.1
C 10 22 16141 88.32 762 768 174.1
C 13 61 5368 26.43 762 768 174.1
D 12 233 824319 4483.54 764 742 183.7
D 1 52 208521 1131.15 764 742 183.7
D 7 238 42690 228.36 764 742 183.7

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