ASTROSAT CZTI

Data Quality Report

Orbit 11566

Creation date: 2024-06-27T16:15:08.998358
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/AS1A04_112T01_9000001698_11566cztM0_level2.evt modeM0/AS1A04_112T01_9000001698_11566cztM0_level2_quad_clean.evt
Size (bytes)658,788,48079,876,800
Size628.3 MB 76.2 MB
Events in quadrant A7,359,132468,370
Events in quadrant B5,148,421496,226
Events in quadrant C3,171,580500,696
Events in quadrant D3,816,167483,176

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265193
B0197652
C0139472
D0159812

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6740139820.741840%
B67406209.198813%
C67401121.661721%
D67401812.685460%

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 7876 6742 868 868 11.02% 12.87%
B 7876 6742 324 324 4.11% 4.81%
C 7876 6742 0 0 0.00% 0.00%
D 7876 6742 82 82 1.04% 1.22%

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 8 5 3932593 25695.55 766 749 153.0
A 15 174 173774 1130.76 766 749 153.0
A 1 162 90898 589.15 766 749 153.0
B 4 239 1430641 9452.24 812 793 151.3
B 15 204 245631 1618.54 812 793 151.3
B 11 51 102288 670.95 812 793 151.3
C 0 10 32752 174.34 805 807 183.2
C 13 61 5972 28.19 805 807 183.2
C 3 202 2050 6.78 805 807 183.2
D 1 52 372647 1942.36 806 781 191.5
D 2 120 131937 685.07 806 781 191.5
D 13 137 104809 543.37 806 781 191.5

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