ASTROSAT CZTI

Data Quality Report

Orbit 20190825_A06_009T03_9000003122_level2

Creation date: 2019-09-29T03:54:44.373787
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/AS1A06_009T03_9000003122cztM0_level2_bc.evt modeM0/AS1A06_009T03_9000003122cztM0_level2_quad_clean.evt
Size (bytes)1,922,644,800561,816,000
Size1.8 GB 535.8 MB
Events in quadrant A13,383,2713,587,055
Events in quadrant B11,649,3483,668,069
Events in quadrant C9,203,7233,521,100
Events in quadrant D21,032,5823,258,662

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01038200
B0997490
C0917150
D01292450

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0970
C0960
D0970

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08860
B08760
C08830
D08820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4344910152.336072%
B434278892.047114%
C434777501.725050%
D4342823195.339873%

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 55211 43805 103 103 0.19% 0.24%
B 55211 43827 28 28 0.05% 0.06%
C 55211 43861 5 5 0.01% 0.01%
D 55209 43825 725 725 1.31% 1.65%

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 15 192 4132160 8046.78 2387 2348 513.2
A 13 254 58525 109.46 2387 2348 513.2
A 13 252 33598 60.89 2387 2348 513.2
B 7 220 649554 1413.99 2429 2376 457.7
B 0 182 433214 941.32 2429 2376 457.7
B 0 219 266521 577.12 2429 2376 457.7
C 0 10 170502 312.1 2307 2303 538.9
C 3 233 83114 149.95 2307 2303 538.9
C 10 91 64829 116.02 2307 2303 538.9
D 5 222 2796967 5344.78 2282 2209 522.9
D 1 52 2614367 4995.57 2282 2209 522.9
D 1 239 2130448 4070.11 2282 2209 522.9

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