ASTROSAT CZTI

Data Quality Report

Orbit 03945

Creation date: 2024-06-27T14:35:32.449826
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_172T01_9000000502_03945cztM0_level2.evt modeM0/AS1G05_172T01_9000000502_03945cztM0_level2_quad_clean.evt
Size (bytes)1,245,499,200206,300,160
Size1.2 GB 196.7 MB
Events in quadrant A9,614,5181,249,515
Events in quadrant B9,111,9471,258,058
Events in quadrant C8,008,8221,252,457
Events in quadrant D9,729,8151,209,407

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03760
B03760
C03760
D03760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04147034
B03931640
C03759039
D04250339

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185573882.090855%
B185541380.743775%
C18552430.231781%
D185543461.864827%

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 20262 18574 172 172 0.85% 0.93%
B 20262 18573 15 15 0.07% 0.08%
C 20262 18574 0 0 0.00% 0.00%
D 20261 18573 195 195 0.96% 1.05%

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 0 118 845054 1975.35 2091 2044 426.8
A 0 50 284786 662.52 2091 2044 426.8
A 8 15 119107 274.3 2091 2044 426.8
B 15 204 488577 1189.93 2118 2064 408.9
B 3 0 135761 327.0 2118 2064 408.9
B 4 81 55979 131.87 2118 2064 408.9
C 8 128 34571 68.94 2025 2031 472.0
C 10 65 18452 34.79 2025 2031 472.0
C 13 61 17155 32.04 2025 2031 472.0
D 2 232 928935 1914.23 2014 1952 484.3
D 2 63 298502 612.38 2014 1952 484.3
D 13 223 255373 523.32 2014 1952 484.3

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
Veto Counter