ASTROSAT CZTI

Data Quality Report

Orbit 31076

Creation date: 2024-06-27T20:23:04.840836
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/AS1A10_109T01_9000004492_31076cztM0_level2.evt modeM0/AS1A10_109T01_9000004492_31076cztM0_level2_quad_clean.evt
Size (bytes)565,992,00093,168,000
Size539.8 MB 88.9 MB
Events in quadrant A3,552,702612,534
Events in quadrant B5,381,228603,596
Events in quadrant C3,891,457586,189
Events in quadrant D3,889,905579,861

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146902
B0201052
C0157692
D0155982

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6303801.269237%
B63032153.411074%
C63032644.188482%
D6303651.031255%

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 8658 6305 0 0 0.00% 0.00%
B 8658 6305 14 14 0.16% 0.22%
C 8658 6305 34 34 0.39% 0.54%
D 8658 6305 7 7 0.08% 0.11%

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 13 170 79461 441.93 900 887 177.8
A 13 254 10812 55.82 900 887 177.8
A 3 137 8254 41.44 900 887 177.8
B 6 159 1672488 10150.61 880 861 164.7
B 0 190 121624 733.31 880 861 164.7
B 0 229 96749 582.26 880 861 164.7
C 0 10 249258 1242.82 858 868 199.9
C 14 238 140540 698.85 858 868 199.9
C 10 22 106504 528.55 858 868 199.9
D 8 195 495007 2398.14 875 855 206.1
D 2 250 34902 165.23 875 855 206.1
D 13 174 34793 164.7 875 855 206.1

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