ASTROSAT CZTI

Data Quality Report

Orbit 10898

Creation date: 2024-06-27T16:05:21.286627
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/AS1A04_055T01_9000001574_10898cztM0_level2.evt modeM0/AS1A04_055T01_9000001574_10898cztM0_level2_quad_clean.evt
Size (bytes)268,646,40053,340,480
Size256.2 MB 50.9 MB
Events in quadrant A2,899,250324,870
Events in quadrant B2,369,979363,211
Events in quadrant C1,288,541381,403
Events in quadrant D1,403,572362,434

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103161
B088471
C054811
D057791

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A12733597094080
B1-1-1
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A255261023.902821%
B255230511.951411%
C255270.274295%
D2552250.979624%

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 2551 2551 488 488 19.13% 19.13%
B 2552 2552 205 205 8.03% 8.03%
C 2552 2552 1 1 0.04% 0.04%
D 2552 2552 8 8 0.31% 0.31%

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 8 5 1704097 27421.43 298 293 62.1
A 14 254 39336 628.37 298 293 62.1
A 0 226 2771 39.88 298 293 62.1
B 4 239 894999 14602.93 321 314 61.3
B 4 81 70021 1137.75 321 314 61.3
B 0 214 60204 977.52 321 314 61.3
C 14 234 6151 77.74 328 330 74.9
C 13 61 2468 28.55 328 330 74.9
C 8 222 1941 21.52 328 330 74.9
D 9 85 27065 336.25 333 324 79.5
D 7 71 26452 328.54 333 324 79.5
D 13 104 15384 189.37 333 324 79.5

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