ASTROSAT CZTI

Data Quality Report

Orbit 35994

Creation date: 2022-07-19T01:11:18.444084
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/AS1A11_050T19_9000005156_35994cztM0_level2.evt modeM0/AS1A11_050T19_9000005156_35994cztM0_level2_quad_clean.evt
Size (bytes)1,489,320,000279,383,040
Size1.4 GB 266.4 MB
Events in quadrant A7,342,6551,958,186
Events in quadrant B9,296,3581,916,595
Events in quadrant C14,505,2021,725,852
Events in quadrant D12,895,5921,771,165

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0322815
B0379374
C0531334
D0489714

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03220
B03220
C03220
D03220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0490
B0490
C0490
D0500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15785230.145708%
B157854692.971175%
C15785286218.131137%
D1578514399.116250%

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 19903 15788 0 0 0.00% 0.00%
B 19903 15788 332 332 1.67% 2.10%
C 19903 15788 2543 2543 12.78% 16.11%
D 19903 15788 1247 1247 6.27% 7.90%

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 10 83 411223 1150.45 1785 1749 355.9
A 13 254 25928 67.93 1785 1749 355.9
A 3 137 19153 48.9 1785 1749 355.9
B 5 172 1440424 4316.79 1749 1699 333.3
B 5 255 275280 820.86 1749 1699 333.3
B 4 171 234777 699.33 1749 1699 333.3
C 9 187 7275772 19944.82 1595 1608 364.7
C 15 214 605713 1656.38 1595 1608 364.7
C 0 207 256977 700.19 1595 1608 364.7
D 12 227 1865029 4602.06 1682 1638 404.9
D 10 118 1718453 4240.06 1682 1638 404.9
D 12 235 1296081 3196.92 1682 1638 404.9

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