ASTROSAT CZTI

Data Quality Report

Orbit 03826

Creation date: 2024-06-27T14:34:03.681130
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_189T01_9000000492_03826cztM0_level2.evt modeM0/AS1G05_189T01_9000000492_03826cztM0_level2_quad_clean.evt
Size (bytes)869,132,16078,071,040
Size828.9 MB 74.5 MB
Events in quadrant A9,033,862413,048
Events in quadrant B6,562,164456,741
Events in quadrant C5,890,991445,038
Events in quadrant D4,240,288438,475

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0328355
B0253334
C0235854
D0189504

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8781200222.799226%
B878197611.114907%
C87818069.178909%
D87813493.974490%

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 8916 8782 1398 1398 15.68% 15.92%
B 8916 8782 352 352 3.95% 4.01%
C 8916 8783 350 350 3.93% 3.98%
D 8916 8784 31 31 0.35% 0.35%

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 15 234 4820728 23324.64 1000 976 206.6
A 0 199 285738 1378.07 1000 976 206.6
A 0 226 36784 173.29 1000 976 206.6
B 10 16 1710569 8226.91 1053 1027 207.8
B 15 204 620165 2979.51 1053 1027 207.8
B 14 167 86654 412.07 1053 1027 207.8
C 2 53 1841734 7609.96 1024 1026 241.9
C 10 65 20436 80.25 1024 1026 241.9
C 1 16 18071 70.47 1024 1026 241.9
D 2 32 86704 335.44 1049 1017 255.5
D 1 84 74143 286.26 1049 1017 255.5
D 14 34 50611 194.14 1049 1017 255.5

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