ASTROSAT CZTI

Data Quality Report

Orbit 47683

Creation date: 2024-07-23T01:42:56.109982
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_47683cztM0_level2.fits modeM0/AS1A13_082T01_9000006342_47683cztM0_level2_quad_clean.evt
Size (bytes)591,883,200129,600,000
Size564.5 MB 123.6 MB
Events in quadrant A8,357,276842,066
Events in quadrant B4,099,478876,762
Events in quadrant C3,679,349857,723
Events in quadrant D5,142,406781,337

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0304960
B0176960
C0170200
D0209160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81444165.108055%
B81451682.062615%
C8145300.368324%
D81452122.602824%

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 8144 8144 2 2 0.02% 0.02%
B 8145 8145 4 4 0.05% 0.05%
C 8145 8145 3 3 0.04% 0.04%
D 8145 8145 120 120 1.47% 1.47%

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 4518390 22502.83 949 926 200.8
A 9 191 129653 641.23 949 926 200.8
A 13 248 20389 96.95 949 926 200.8
B 0 190 168019 875.77 951 920 190.8
B 0 200 105587 548.56 951 920 190.8
B 12 111 24982 126.11 951 920 190.8
C 12 250 26350 114.62 934 937 221.7
C 6 247 7953 31.65 934 937 221.7
C 14 254 6832 26.59 934 937 221.7
D 10 181 860804 3646.52 932 902 235.8
D 2 165 234135 989.05 932 902 235.8
D 12 218 87588 367.6 932 902 235.8

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