ASTROSAT CZTI

Data Quality Report

Orbit 03898

Creation date: 2024-06-27T14:34:59.429640
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/AS1G05_083T02_9000000498_03898cztM0_level2.evt modeM0/AS1G05_083T02_9000000498_03898cztM0_level2_quad_clean.evt
Size (bytes)666,760,32087,442,560
Size635.9 MB 83.4 MB
Events in quadrant A3,553,405568,774
Events in quadrant B3,820,352569,893
Events in quadrant C8,627,696453,009
Events in quadrant D3,694,646545,259

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156761
B0161260
C0307820
D0166090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73301011.377899%
B7330801.091405%
C7305209628.692676%
D73301582.155525%

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 7329 7329 9 9 0.12% 0.12%
B 7329 7329 17 17 0.23% 0.23%
C 7329 7304 1705 1705 23.26% 23.34%
D 7329 7329 53 53 0.72% 0.72%

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 15 138368 810.0 823 803 169.8
A 0 50 90830 530.09 823 803 169.8
A 0 118 72625 422.9 823 803 169.8
B 15 204 242966 1512.23 829 808 160.1
B 7 221 225982 1406.17 829 808 160.1
B 4 81 44724 274.25 829 808 160.1
C 2 53 5881293 36170.54 697 697 162.6
C 12 4 19701 116.89 697 697 162.6
C 13 61 5791 31.33 697 697 162.6
D 12 233 223523 1166.54 792 765 191.0
D 13 248 180161 939.46 792 765 191.0
D 10 246 60778 314.28 792 765 191.0

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
Veto Counter