ASTROSAT CZTI

Data Quality Report

Orbit 20170608_C02_027T01_9000001280_level2

Creation date: 2017-09-24T03:41:49.514191
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/AS1C02_027T01_9000001280cztM0_level2.evt modeM0/AS1C02_027T01_9000001280cztM0_level2_quad_clean.evt
Size (bytes)4,244,356,8001,081,828,800
Size4.0 GB 1.0 GB
Events in quadrant A33,418,2697,179,598
Events in quadrant B31,616,9867,274,739
Events in quadrant C26,239,5447,288,587
Events in quadrant D33,291,1526,985,385

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012000
B012000
C012000
D012000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0850
B0850
C0850
D0850

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01373020
B01326860
C01202540
D01402580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5893414032.380629%
B5893514492.458641%
C589357381.252227%
D5893520323.447866%

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 67289 58939 338 338 0.50% 0.57%
B 67289 58939 314 314 0.47% 0.53%
C 67289 58941 0 0 0.00% 0.00%
D 67289 58939 1168 1168 1.74% 1.98%

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 8 5 4747135 3499.12 6812 6666 1354.8
A 5 16 532993 388.5 6812 6666 1354.8
A 15 174 480355 349.65 6812 6666 1354.8
B 8 234 2571438 2027.53 6843 6664 1265.0
B 0 85 702027 549.71 6843 6664 1265.0
B 10 16 580097 453.32 6843 6664 1265.0
C 13 61 50806 29.08 6698 6716 1516.3
C 8 128 38425 20.91 6698 6716 1516.3
C 8 222 27482 13.7 6698 6716 1516.3
D 1 52 3117143 1816.36 6613 6449 1712.6
D 12 233 1027967 596.47 6613 6449 1712.6
D 13 169 1018484 590.94 6613 6449 1712.6

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