ASTROSAT CZTI

Data Quality Report

Orbit 36197

Creation date: 2022-06-09T06:33:49.661279
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_097T17_9000005170_36197cztM0_level2.evt modeM0/AS1A11_097T17_9000005170_36197cztM0_level2_quad_clean.evt
Size (bytes)1,646,801,280233,913,600
Size1.5 GB 223.1 MB
Events in quadrant A7,781,2381,579,957
Events in quadrant B8,889,4681,590,203
Events in quadrant C19,356,8411,337,119
Events in quadrant D12,754,1951,457,698

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03320
B03320
C03320
D03320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0335615
B0368274
C0680864
D0488434

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16212310.191216%
B162123051.881322%
C16212411125.357760%
D1621211276.951641%

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 21734 16216 4 4 0.02% 0.02%
B 21734 16216 189 189 0.87% 1.17%
C 21734 16215 3720 3720 17.12% 22.94%
D 21734 16216 1038 1038 4.78% 6.40%

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 432956 1171.26 1852 1813 368.1
A 15 223 82227 218.46 1852 1813 368.1
A 9 143 45250 118.0 1852 1813 368.1
B 5 172 733034 2071.41 1838 1785 353.0
B 4 171 656126 1853.55 1838 1785 353.0
B 5 236 104871 292.01 1838 1785 353.0
C 4 254 11679055 32748.7 1550 1562 356.6
C 15 214 620403 1735.5 1550 1562 356.6
C 15 208 476538 1332.04 1550 1562 356.6
D 12 227 2454733 5716.14 1767 1719 429.1
D 12 6 1110877 2584.62 1767 1719 429.1
D 12 233 569745 1323.64 1767 1719 429.1

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