ASTROSAT CZTI

Data Quality Report

Orbit 18193

Creation date: 2024-06-27T17:46:31.689868
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_160T02_9000002710_18193cztM0_level2.evt modeM0/AS1A05_160T02_9000002710_18193cztM0_level2_quad_clean.evt
Size (bytes)484,689,60089,864,640
Size462.2 MB 85.7 MB
Events in quadrant A3,127,512591,379
Events in quadrant B3,201,465595,448
Events in quadrant C3,498,508563,069
Events in quadrant D4,445,559553,756

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127051
B0128591
C0139101
D0172012

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5973631.054746%
B5974761.272179%
C59741362.276532%
D59731963.281433%

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 7258 5974 1 1 0.01% 0.02%
B 7259 5975 2 2 0.03% 0.03%
C 7259 5975 37 37 0.51% 0.62%
D 7258 5974 132 132 1.82% 2.21%

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 15 174 15224 89.16 809 794 161.8
A 0 226 7222 39.72 809 794 161.8
A 12 194 6147 33.08 809 794 161.8
B 7 220 40852 264.09 795 778 151.7
B 0 189 20643 130.91 795 778 151.7
B 12 111 16890 106.18 795 778 151.7
C 4 254 419281 2384.08 758 764 175.5
C 14 238 119552 676.68 758 764 175.5
C 13 61 5283 25.74 758 764 175.5
D 7 238 664101 3566.52 776 754 186.0
D 5 222 341021 1829.46 776 754 186.0
D 1 52 295823 1586.45 776 754 186.0

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