ASTROSAT CZTI

Data Quality Report

Orbit 47659

Creation date: 2024-07-21T11:33:16.548357
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_082T01_9000006342_47659cztM0_level2.fits modeM0/AS1A13_082T01_9000006342_47659cztM0_level2_quad_clean.evt
Size (bytes)488,502,720108,302,400
Size465.9 MB 103.3 MB
Events in quadrant A7,324,346705,041
Events in quadrant B3,536,104741,740
Events in quadrant C3,059,449715,038
Events in quadrant D3,638,965646,376

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265282
B0150612
C0138962
D0157502

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67552874.248705%
B6755540.799408%
C6755350.518135%
D67551732.561066%

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 7680 6756 74 74 0.96% 1.10%
B 7680 6756 6 6 0.08% 0.09%
C 7680 6756 2 2 0.03% 0.03%
D 7680 6756 134 134 1.74% 1.98%

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 3925610 25171.79 751 735 155.9
A 9 191 485493 3108.95 751 735 155.9
A 3 137 9019 53.13 751 735 155.9
B 0 200 215743 1431.83 758 733 150.2
B 5 255 162592 1077.88 758 733 150.2
B 5 172 86838 573.4 758 733 150.2
C 14 254 53106 290.59 757 760 180.1
C 3 233 47463 259.26 757 760 180.1
C 1 3 7416 36.95 757 760 180.1
D 12 2 663248 3522.98 748 723 188.1
D 2 249 72075 379.41 748 723 188.1
D 2 234 31152 161.81 748 723 188.1

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