ASTROSAT CZTI

Data Quality Report

Orbit 22947

Creation date: 2024-06-27T18:47:53.006934
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/AS1A08_009T01_9000003390_22947cztM0_level2.evt modeM0/AS1A08_009T01_9000003390_22947cztM0_level2_quad_clean.evt
Size (bytes)462,479,04099,766,080
Size441.1 MB 95.1 MB
Events in quadrant A3,383,430641,103
Events in quadrant B3,408,771651,653
Events in quadrant C3,281,916621,960
Events in quadrant D3,446,385609,351

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148592
B0147621
C0145551
D0152891

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71351101.541696%
B71361311.835762%
C71361371.919843%
D71361151.611547%

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 7370 7136 0 0 0.00% 0.00%
B 7371 7137 6 6 0.08% 0.08%
C 7371 7137 1 1 0.01% 0.01%
D 7371 7137 20 20 0.27% 0.28%

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 14 238 109840 639.2 841 822 170.6
A 13 170 23241 131.45 841 822 170.6
A 13 254 11322 61.56 841 822 170.6
B 0 189 42936 262.63 836 815 160.4
B 0 190 40829 249.49 836 815 160.4
B 4 216 37429 228.29 836 815 160.4
C 14 238 126176 669.32 798 801 187.3
C 7 247 24703 127.6 798 801 187.3
C 8 128 11368 56.41 798 801 187.3
D 13 153 184162 922.98 815 790 198.7
D 1 52 87388 435.88 815 790 198.7
D 7 223 38014 187.36 815 790 198.7

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