ASTROSAT CZTI

Data Quality Report

Orbit 37807

Creation date: 2024-06-27T21:44:41.758517
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/AS1A10_103T06_9000005348_37807cztM0_level2.evt modeM0/AS1A10_103T06_9000005348_37807cztM0_level2_quad_clean.evt
Size (bytes)461,410,56068,693,760
Size440.0 MB 65.5 MB
Events in quadrant A3,192,265417,002
Events in quadrant B3,751,860418,887
Events in quadrant C3,069,470427,017
Events in quadrant D3,551,942396,943

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129673
B0150142
C0125772
D0145322

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6021160.265737%
B6021931.544594%
C6021130.215911%
D60211823.022754%

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 9368 6023 7 7 0.07% 0.12%
B 9368 6023 57 57 0.61% 0.95%
C 9368 6023 8 8 0.09% 0.13%
D 9368 6023 161 161 1.72% 2.67%

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 356458 2489.92 709 694 142.9
A 15 222 51658 356.69 709 694 142.9
A 9 143 22482 152.49 709 694 142.9
B 10 246 568851 4218.57 703 684 134.7
B 5 172 127502 941.61 703 684 134.7
B 0 189 104728 772.51 703 684 134.7
C 15 214 276350 1726.06 689 695 159.7
C 0 10 90849 564.51 689 695 159.7
C 1 23 6118 33.96 689 695 159.7
D 2 249 260684 1580.32 680 663 164.5
D 13 249 176635 1069.5 680 663 164.5
D 10 199 120836 730.37 680 663 164.5

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