ASTROSAT CZTI

Data Quality Report

Orbit 04164

Creation date: 2024-06-27T14:38:15.677672
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_240T01_9000000536_04164cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04164cztM0_level2_quad_clean.evt
Size (bytes)422,824,32067,775,040
Size403.2 MB 64.6 MB
Events in quadrant A3,091,841413,313
Events in quadrant B3,794,043413,241
Events in quadrant C2,671,953407,718
Events in quadrant D2,838,092397,403

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131412
B0151431
C0121921
D0127111

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60201061.760797%
B60201542.558140%
C6020100.166113%
D6020400.664452%

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 7120 6021 74 74 1.04% 1.23%
B 7120 6021 110 110 1.54% 1.83%
C 7120 6021 1 1 0.01% 0.02%
D 7120 6021 23 23 0.32% 0.38%

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 0 199 280313 1918.11 705 690 145.8
A 0 226 32706 219.62 705 690 145.8
A 0 50 27450 183.56 705 690 145.8
B 14 167 651700 4747.84 704 688 137.1
B 10 16 342572 2493.37 704 688 137.1
B 4 48 24197 171.45 704 688 137.1
C 9 144 8650 50.37 679 682 158.2
C 13 61 5603 31.11 679 682 158.2
C 7 222 5325 29.35 679 682 158.2
D 13 239 135435 812.64 684 664 165.8
D 12 233 41787 247.96 684 664 165.8
D 2 232 29689 175.01 684 664 165.8

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