ASTROSAT CZTI

Data Quality Report

Orbit 20181101_A05_059T07_9000002480_level2

Creation date: 2018-11-02T10:01:24.735241
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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_059T07_9000002480cztM0_level2_bc.evt modeM0/AS1A05_059T07_9000002480cztM0_level2_quad_clean.evt
Size (bytes)743,532,480337,366,080
Size709.1 MB 321.7 MB
Events in quadrant A7,281,6532,205,250
Events in quadrant B4,597,8912,302,699
Events in quadrant C3,991,1862,242,978
Events in quadrant D5,370,5442,182,850

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03760
B03760
C03760
D03760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0524160
B0412600
C0391390
D0434880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1865713957.477086%
B186573651.956370%
C186572751.473978%
D186574932.642440%

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 20448 18654 128 128 0.63% 0.69%
B 20448 18658 18 18 0.09% 0.10%
C 20448 18659 2 2 0.01% 0.01%
D 20448 18658 38 38 0.19% 0.20%

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 3647082 18258.45 893 874 199.7
A 10 234 109154 542.21 893 874 199.7
A 15 190 51765 254.84 893 874 199.7
B 15 35 424823 2362.35 922 898 179.5
B 10 16 230756 1280.9 922 898 179.5
B 15 36 78525 432.58 922 898 179.5
C 0 207 295898 1391.47 892 885 212.0
C 3 233 247318 1162.34 892 885 212.0
C 7 247 16310 72.75 892 885 212.0
D 10 70 489696 2278.4 904 871 214.5
D 1 52 438009 2037.49 904 871 214.5
D 2 16 294718 1369.61 904 871 214.5

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