ASTROSAT CZTI

Data Quality Report

Orbit 20103

Creation date: 2024-06-27T18:11:20.174605
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/AS1A05_180T01_9000002992_20103cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20103cztM0_level2_quad_clean.evt
Size (bytes)579,346,56080,602,560
Size552.5 MB 76.9 MB
Events in quadrant A4,502,316504,508
Events in quadrant B5,386,999519,973
Events in quadrant C3,042,850505,087
Events in quadrant D4,213,172497,997

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170411
B0201411
C0125682
D0162411

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A591162210.522754%
B591167611.436305%
C5910931.573604%
D59112854.821519%

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 7131 5912 389 389 5.46% 6.58%
B 7131 5912 505 505 7.08% 8.54%
C 7130 5911 0 0 0.00% 0.00%
D 7131 5912 255 255 3.58% 4.31%

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 14 238 1404150 9232.74 763 753 152.0
A 14 254 148520 972.14 763 753 152.0
A 13 254 7527 44.57 763 753 152.0
B 10 245 2268989 15649.3 768 753 144.9
B 4 80 60621 413.05 768 753 144.9
B 0 198 44482 301.7 768 753 144.9
C 14 238 120222 690.75 748 756 173.0
C 13 61 5226 25.85 748 756 173.0
C 3 233 4670 22.63 748 756 173.0
D 7 238 605769 3298.93 760 741 183.4
D 7 96 394033 2144.43 760 741 183.4
D 11 176 288381 1568.36 760 741 183.4

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