ASTROSAT CZTI

Data Quality Report

Orbit 48505

Creation date: 2024-09-16T13:10:45.202738
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_037T01_9000006432_48505cztM0_level2.fits modeM0/AS1A13_037T01_9000006432_48505cztM0_level2_quad_clean.evt
Size (bytes)460,834,560108,319,680
Size439.5 MB 103.3 MB
Events in quadrant A6,970,379710,789
Events in quadrant B3,081,976755,803
Events in quadrant C2,837,896724,306
Events in quadrant D3,649,736623,395

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255922
B0139932
C0136002
D0160662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66772303.444661%
B6677991.482702%
C6677180.269582%
D66763545.302576%

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 7807 6678 44 44 0.56% 0.66%
B 7807 6677 14 14 0.18% 0.21%
C 7807 6678 1 1 0.01% 0.01%
D 7806 6676 311 311 3.98% 4.66%

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 4072519 27100.27 728 713 150.2
A 12 189 72805 479.81 728 713 150.2
A 7 3 13214 83.2 728 713 150.2
B 7 219 105948 723.37 737 714 145.5
B 5 255 37210 250.87 737 714 145.5
B 12 111 18468 122.04 737 714 145.5
C 14 67 16922 95.34 722 727 169.9
C 13 61 4956 24.9 722 727 169.9
C 2 96 3403 15.75 722 727 169.9
D 2 165 781045 4530.79 691 670 172.2
D 12 233 57588 330.46 691 670 172.2
D 2 249 45065 257.75 691 670 172.2

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