ASTROSAT CZTI

Data Quality Report

Orbit 20161221_A02_170T03_9000000910_level2

Creation date: 2017-09-22T14:06:08.811811
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/AS1A02_170T03_9000000910cztM0_level2.evt modeM0/AS1A02_170T03_9000000910cztM0_level2_quad_clean.evt
Size (bytes)1,629,023,040223,862,400
Size1.5 GB 213.5 MB
Events in quadrant A9,748,9001,496,374
Events in quadrant B9,335,0041,510,348
Events in quadrant C9,016,4591,499,165
Events in quadrant D20,018,0191,030,058

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0417230
B0403580
C0398170
D0723270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03680
B03680
C03680
D03680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A180293812.113262%
B180292521.397748%
C180292451.358922%
D18029500427.755283%

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 23044 18032 220 220 0.95% 1.22%
B 23044 18033 76 76 0.33% 0.42%
C 23044 18033 115 115 0.50% 0.64%
D 23044 18032 3855 3855 16.73% 21.38%

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 14 111 416407 837.68 2385 2347 494.3
A 8 15 112184 222.21 2385 2347 494.3
A 3 1 26831 49.53 2385 2347 494.3
B 4 81 191343 430.67 2295 2253 439.1
B 4 80 86714 192.37 2295 2253 439.1
B 0 219 84694 187.77 2295 2253 439.1
C 9 247 213865 397.35 2247 2270 532.5
C 1 16 33793 59.2 2247 2270 532.5
C 13 61 17217 28.07 2247 2270 532.5
D 2 33 10724151 21230.22 1968 1921 505.0
D 8 195 497841 981.93 1968 1921 505.0
D 2 63 402081 792.32 1968 1921 505.0

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