ASTROSAT CZTI

Data Quality Report

Orbit 45216

Creation date: 2024-06-27T23:10:47.517801
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/AS1A13_049T07_9000006056_45216cztM0_level2.fits modeM0/AS1A13_049T07_9000006056_45216cztM0_level2_quad_clean.evt
Size (bytes)228,709,44048,349,440
Size218.1 MB 46.1 MB
Events in quadrant A2,424,983315,249
Events in quadrant B1,792,265327,857
Events in quadrant C1,807,433323,146
Events in quadrant D2,206,402284,065

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A094681
B072671
C074551
D085621

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A29991886.268756%
B29991976.568856%
C2999993.301100%
D29982508.338893%

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 3619 2999 2 2 0.06% 0.07%
B 3619 2999 65 65 1.80% 2.17%
C 3619 3000 22 22 0.61% 0.73%
D 3618 2999 157 157 4.34% 5.24%

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 1051339 13871.1 352 343 75.8
A 0 243 6851 85.89 352 343 75.8
A 3 137 4105 49.65 352 343 75.8
B 5 32 126240 1761.75 351 339 71.5
B 4 171 126161 1760.65 351 339 71.5
B 3 112 114512 1597.64 351 339 71.5
C 12 2 331204 3896.37 355 355 84.9
C 1 3 77317 906.37 355 355 84.9
C 3 233 7251 81.21 355 355 84.9
D 13 249 596615 6709.36 347 335 88.9
D 2 249 58138 650.4 347 335 88.9
D 1 52 55181 617.13 347 335 88.9

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