ASTROSAT CZTI

Data Quality Report

Orbit 20240516_A13_092T20_9000006254_level2

Creation date: 2024-05-18T12:21:09.494674
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_092T20_9000006254cztM0_level2.fits modeM0/AS1A13_092T20_9000006254cztM0_level2_quad_clean.evt
Size (bytes)403,735,680388,065,600
Size385.0 MB 370.1 MB
Events in quadrant A2,349,4602,238,074
Events in quadrant B2,294,1402,263,488
Events in quadrant C2,398,4502,194,882
Events in quadrant D1,989,1421,861,472

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09500
B09500
C09500
D09500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01609580
B01116780
C0998080
D01343050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4651715783.392308%
B4651813042.803216%
C465184881.049056%
D4651827295.866546%

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 54452 46513 0 0 0.00% 0.00%
B 54453 46517 0 0 0.00% 0.00%
C 54453 46513 0 0 0.00% 0.00%
D 54453 46336 0 0 0.00% 0.00%

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 7 110 1924 8.48 612 569 159.8
A 0 29 1845 7.99 612 569 159.8
A 14 95 1695 7.05 612 569 159.8
B 2 9 2197 13.57 608 579 119.3
B 2 8 1775 10.03 608 579 119.3
B 3 17 1657 9.04 608 579 119.3
C 1 81 1828 7.38 635 590 167.8
C 3 202 1819 7.33 635 590 167.8
C 3 203 1735 6.82 635 590 167.8
D 12 6 1473 6.01 571 517 159.1
D 10 189 1469 5.98 571 517 159.1
D 6 67 1460 5.93 571 517 159.1

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