ASTROSAT CZTI

Data Quality Report

Orbit 20180529_G08_025T01_9000002130_level2

Creation date: 2018-07-25T13:32:03.778998
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/AS1G08_025T01_9000002130cztM0_level2_bc.evt modeM0/AS1G08_025T01_9000002130cztM0_level2_quad_clean.evt
Size (bytes)9,583,041,6003,197,436,480
Size8.9 GB 3.0 GB
Events in quadrant A54,995,17020,733,855
Events in quadrant B67,405,38520,244,819
Events in quadrant C69,203,05520,095,011
Events in quadrant D82,469,56019,512,428

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05062800
B05667050
C05592450
D06194390

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03660
B03660
C03660
D03660

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A048340
B048300
C048340
D048340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A23741734881.469145%
B23741994883.996310%
C23742640121.689790%
D237397119355.027443%

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 274519 237479 92 92 0.03% 0.04%
B 274519 237497 647 647 0.24% 0.27%
C 274519 237503 20 20 0.01% 0.01%
D 274519 237472 994 994 0.36% 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 8 15 2784769 1016.59 12519 12302 2727.2
A 12 189 2643719 964.87 12519 12302 2727.2
A 4 2 577580 207.27 12519 12302 2727.2
B 10 16 6209254 2707.71 12264 11948 2288.8
B 0 85 3144386 1368.62 12264 11948 2288.8
B 0 219 2020728 877.67 12264 11948 2288.8
C 3 233 21468971 8191.75 11996 11834 2619.4
C 0 207 445865 165.7 11996 11834 2619.4
C 14 234 186582 66.71 11996 11834 2619.4
D 13 122 11614020 3976.81 12025 11698 2917.5
D 12 110 7555786 2585.81 12025 11698 2917.5
D 10 199 6999583 2395.16 12025 11698 2917.5

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