ASTROSAT CZTI

Data Quality Report

Orbit 20160515_G05_167T01_9000000456_level2

Creation date: 2018-05-17T08:35:51.704665
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/AS1G05_167T01_9000000456cztM0_level2.evt modeM0/AS1G05_167T01_9000000456cztM0_level2_quad_clean.evt
Size (bytes)15,825,801,6002,917,105,920
Size14.7 GB 2.7 GB
Events in quadrant A105,704,70318,613,126
Events in quadrant B117,758,27318,787,381
Events in quadrant C139,608,22318,196,122
Events in quadrant D101,649,41017,960,341

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04605290
B04902840
C05624640
D04598480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03020
B03020
C03020
D03020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A043880
B043880
C043880
D043880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A21611128931.338664%
B21611133911.569101%
C216111133156.161186%
D21611126411.222057%

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 246213 216148 383 383 0.16% 0.18%
B 246213 216151 452 452 0.18% 0.21%
C 246213 216151 9419 9419 3.83% 4.36%
D 246213 216149 916 916 0.37% 0.42%

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 50 1850763 352.48 25647 25136 5179.3
A 14 249 1694718 322.36 25647 25136 5179.3
A 8 15 1393525 264.2 25647 25136 5179.3
B 15 204 10720069 2138.21 26027 25427 5001.7
B 14 167 2448686 484.49 26027 25427 5001.7
B 2 249 1420162 278.85 26027 25427 5001.7
C 7 220 20268256 3582.79 24488 24741 5650.2
C 1 192 16272365 2875.58 24488 24741 5650.2
C 15 208 3272895 574.87 24488 24741 5650.2
D 13 223 3130430 518.21 24892 24200 5994.2
D 9 85 1258837 205.97 24892 24200 5994.2
D 2 37 888465 144.18 24892 24200 5994.2

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