ASTROSAT CZTI

Data Quality Report

Orbit 25798

Creation date: 2024-06-27T19:21:33.549139
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/AS1A07_068T01_9000003756_25798cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25798cztM0_level2_quad_clean.evt
Size (bytes)473,711,04074,905,920
Size451.8 MB 71.4 MB
Events in quadrant A3,524,400460,229
Events in quadrant B3,226,032464,668
Events in quadrant C3,159,736441,739
Events in quadrant D3,981,063434,267

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145200
B0138110
C0137170
D0161970

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6703841.253170%
B6703590.880203%
C6703791.178577%
D6703841.253170%

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 7103 6703 27 27 0.38% 0.40%
B 7103 6703 0 0 0.00% 0.00%
C 7103 6703 0 0 0.00% 0.00%
D 7103 6703 61 61 0.86% 0.91%

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 0 13 381761 2311.04 814 796 164.8
A 13 254 9301 51.59 814 796 164.8
A 3 137 7640 41.51 814 796 164.8
B 0 190 19613 119.26 811 791 157.8
B 12 111 19476 118.39 811 791 157.8
B 0 219 17515 105.96 811 791 157.8
C 14 238 124528 674.25 776 781 183.5
C 3 233 10257 51.63 776 781 183.5
C 13 61 5376 25.04 776 781 183.5
D 8 195 509219 2699.03 780 760 188.4
D 7 80 183458 969.81 780 760 188.4
D 13 104 171227 904.88 780 760 188.4

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