ASTROSAT CZTI

Data Quality Report

Orbit 36351

Creation date: 2022-06-19T05:52:29.108439
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_9000005194_36351cztM0_level2.evt modeM0/AS1A11_097T17_9000005194_36351cztM0_level2_quad_clean.evt
Size (bytes)254,574,72033,989,760
Size242.8 MB 32.4 MB
Events in quadrant A1,564,630206,551
Events in quadrant B1,932,040207,131
Events in quadrant C2,201,462203,255
Events in quadrant D1,804,746196,511

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A064932
B077551
C083481
D074341

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3023140.463116%
B3023832.745617%
C30232076.847502%
D3023692.282501%

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 4785 3024 4 4 0.08% 0.13%
B 4785 3024 43 43 0.90% 1.42%
C 4785 3023 221 221 4.62% 7.31%
D 4785 3024 68 68 1.42% 2.25%

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 95983 1304.67 353 345 73.3
A 9 143 77692 1055.15 353 345 73.3
A 12 189 14127 188.01 353 345 73.3
B 5 236 272856 3973.79 347 337 68.6
B 0 189 130284 1894.85 347 337 68.6
B 5 172 89147 1295.0 347 337 68.6
C 0 207 667244 8399.61 335 337 79.4
C 15 214 126092 1583.87 335 337 79.4
C 0 10 102912 1291.92 335 337 79.4
D 12 6 254092 3006.21 340 329 84.4
D 2 250 84337 995.2 340 329 84.4
D 2 249 50378 592.91 340 329 84.4

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