ASTROSAT CZTI

Data Quality Report

Orbit 20160121_G02_050T01_9000000282_level2

Creation date: 2025-01-04T18:29:32.095646
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/AS1G02_050T01_9000000282cztM0_level2.fits modeM0/AS1G02_050T01_9000000282cztM0_level2_quad_clean.evt
Size (bytes)511,511,040525,850,560
Size487.8 MB 501.5 MB
Events in quadrant A3,021,5883,132,180
Events in quadrant B2,957,6823,120,705
Events in quadrant C2,923,2262,943,896
Events in quadrant D2,538,6842,679,704

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012020
B012020
C012020
D012020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02562620
B02761730
C02508380
D02499980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0850
B0850
C0850
D0850

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A590195010.848879%
B590195360.908182%
C590196961.179281%
D5901914752.499195%

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 67594 59010 0 0 0.00% 0.00%
B 67594 59011 0 0 0.00% 0.00%
C 67594 59000 0 0 0.00% 0.00%
D 67593 58935 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 0 29 2808 11.18 782 726 186.2
A 7 110 2689 10.54 782 726 186.2
A 9 19 2165 7.73 782 726 186.2
B 2 9 2312 10.94 780 738 143.8
B 5 128 1983 8.66 780 738 143.8
B 5 232 1874 7.9 780 738 143.8
C 12 241 2008 6.89 770 711 188.1
C 9 242 1883 6.23 770 711 188.1
C 3 235 1864 6.13 770 711 188.1
D 1 19 1917 7.2 724 660 174.6
D 6 231 1779 6.41 724 660 174.6
D 6 44 1752 6.25 724 660 174.6

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