ASTROSAT CZTI

Data Quality Report

Orbit 08990

Creation date: 2024-06-27T15:39:46.484909
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/AS1A03_025T08_9000001248_08990cztM0_level2.evt modeM0/AS1A03_025T08_9000001248_08990cztM0_level2_quad_clean.evt
Size (bytes)568,080,00088,355,520
Size541.8 MB 84.3 MB
Events in quadrant A3,666,949586,464
Events in quadrant B3,488,305593,505
Events in quadrant C5,946,905458,734
Events in quadrant D3,636,989559,193

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149863
B0145802
C0221962
D0151652

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68461752.556237%
B68461612.351738%
C6846148321.662285%
D68461752.556237%

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 7841 6846 22 22 0.28% 0.32%
B 7841 6846 10 10 0.13% 0.15%
C 7841 6846 724 724 9.23% 10.58%
D 7841 6846 40 40 0.51% 0.58%

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 8 5 244447 1370.98 870 851 177.7
A 15 174 65678 364.85 870 851 177.7
A 3 1 14844 78.75 870 851 177.7
B 10 16 32984 193.84 864 844 165.8
B 4 173 25124 146.43 864 844 165.8
B 0 198 23897 139.03 864 844 165.8
C 4 254 3070946 18093.35 727 730 169.7
C 4 238 35716 206.18 727 730 169.7
C 9 68 6314 32.91 727 730 169.7
D 1 52 366918 1758.71 835 814 208.2
D 7 71 55683 263.58 835 814 208.2
D 2 234 27790 129.59 835 814 208.2

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