ASTROSAT CZTI

Data Quality Report

Orbit 46600

Creation date: 2024-06-27T23:25:19.185632
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_092T09_9000006238_46600cztM0_level2.fits modeM0/AS1A13_092T09_9000006238_46600cztM0_level2_quad_clean.evt
Size (bytes)418,213,44074,361,600
Size398.8 MB 70.9 MB
Events in quadrant A4,692,270494,260
Events in quadrant B2,727,393519,526
Events in quadrant C2,140,879506,577
Events in quadrant D5,549,372395,755

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170541
B0113101
C097771
D01989110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A47752254.712042%
B4774951.989946%
C4774140.293255%
D477295720.054484%

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 5625 4776 94 94 1.67% 1.97%
B 5624 4775 38 38 0.68% 0.80%
C 5624 4775 1 1 0.02% 0.02%
D 5624 4775 825 825 14.67% 17.28%

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 2453364 21788.91 535 522 112.6
A 15 235 89504 790.44 535 522 112.6
A 9 191 27401 238.77 535 522 112.6
B 2 2 159486 1474.96 537 520 107.8
B 0 198 149336 1380.78 537 520 107.8
B 15 201 44940 412.15 537 520 107.8
C 12 249 20709 159.56 531 536 126.4
C 3 233 14517 110.58 531 536 126.4
C 12 2 14442 109.99 531 536 126.4
D 1 52 2961761 23940.58 487 471 123.7
D 12 233 402523 3250.39 487 471 123.7
D 13 249 106719 858.96 487 471 123.7

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