ASTROSAT CZTI

Data Quality Report

Orbit 47866

Creation date: 2024-08-04T10:13:21.090449
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/AS1A09_038T20_9000006366_47866cztM0_level2.fits modeM0/AS1A09_038T20_9000006366_47866cztM0_level2_quad_clean.evt
Size (bytes)498,617,280112,633,920
Size475.5 MB 107.4 MB
Events in quadrant A6,662,825740,632
Events in quadrant B3,158,018785,178
Events in quadrant C2,923,218764,769
Events in quadrant D5,205,445663,249

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0241642
B0139632
C0133232
D0200392

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65472023.085383%
B6547691.053918%
C6547240.366580%
D65473595.483428%

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 7767 6548 91 91 1.17% 1.39%
B 7767 6548 35 35 0.45% 0.53%
C 7767 6548 1 1 0.01% 0.02%
D 7767 6548 337 337 4.34% 5.15%

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 3845592 25635.98 724 708 150.0
A 0 31 24403 157.99 724 708 150.0
A 3 137 7834 47.51 724 708 150.0
B 7 219 89699 633.62 735 713 140.4
B 0 183 67250 473.77 735 713 140.4
B 5 255 57434 403.88 735 713 140.4
C 12 2 15915 88.16 740 746 172.1
C 9 237 11171 60.59 740 746 172.1
C 14 254 6554 33.76 740 746 172.1
D 2 165 1758768 9872.09 714 692 178.1
D 2 249 260961 1461.48 714 692 178.1
D 2 37 159719 892.98 714 692 178.1

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