ASTROSAT CZTI

Data Quality Report

Orbit 11559

Creation date: 2024-06-27T16:14:52.677288
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/AS1G08_009T01_9000001696_11559cztM0_level2.evt modeM0/AS1G08_009T01_9000001696_11559cztM0_level2_quad_clean.evt
Size (bytes)569,208,96067,187,520
Size542.8 MB 64.1 MB
Events in quadrant A5,201,386383,168
Events in quadrant B4,175,389390,026
Events in quadrant C3,203,129397,041
Events in quadrant D4,184,487376,442

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200723
B0168662
C0143412
D0171442

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69884185.981683%
B69882814.021179%
C6988590.844305%
D69881231.760160%

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 8554 6991 190 190 2.22% 2.72%
B 8554 6991 101 101 1.18% 1.44%
C 8554 6991 1 1 0.01% 0.01%
D 8554 6991 31 31 0.36% 0.44%

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 1547937 9206.69 817 797 168.0
A 1 162 151480 896.68 817 797 168.0
A 1 178 98079 578.9 817 797 168.0
B 4 239 672289 4211.05 832 812 159.5
B 11 51 122044 760.28 832 812 159.5
B 15 204 98470 612.44 832 812 159.5
C 9 54 17312 86.03 816 820 191.7
C 13 61 6015 27.1 816 820 191.7
C 12 4 2135 6.86 816 820 191.7
D 1 52 732381 3745.99 806 783 195.3
D 13 137 155121 790.25 806 783 195.3
D 8 195 57875 292.33 806 783 195.3

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