ASTROSAT CZTI

Data Quality Report

Orbit 03431

Creation date: 2024-06-27T14:28:55.150323
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/AS1G05_167T01_9000000456_03431cztM0_level2.evt modeM0/AS1G05_167T01_9000000456_03431cztM0_level2_quad_clean.evt
Size (bytes)455,293,44096,143,040
Size434.2 MB 91.7 MB
Events in quadrant A3,095,522625,414
Events in quadrant B3,492,731629,472
Events in quadrant C3,370,904629,495
Events in quadrant D3,405,872591,995

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131973
B0143452
C0140412
D0144352

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6238440.705354%
B6238761.218339%
C6238520.833601%
D62382023.238217%

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 7543 6239 10 10 0.13% 0.16%
B 7543 6239 22 22 0.29% 0.35%
C 7543 6239 26 26 0.34% 0.42%
D 7543 6239 158 158 2.09% 2.53%

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 14 249 54304 340.43 763 750 157.3
A 0 50 50882 318.68 763 750 157.3
A 8 15 44825 280.17 763 750 157.3
B 15 204 185607 1255.19 778 764 147.3
B 4 81 100391 676.52 778 764 147.3
B 2 249 83514 561.92 778 764 147.3
C 7 220 325062 1837.38 760 767 176.5
C 6 80 30072 166.03 760 767 176.5
C 15 208 28217 155.52 760 767 176.5
D 13 223 481075 2684.03 738 720 179.0
D 9 85 54994 303.26 738 720 179.0
D 12 246 51100 281.5 738 720 179.0

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