ASTROSAT CZTI

Data Quality Report

Orbit 20161025_A02_197T02_9000000752_level2

Creation date: 2017-09-18T19:30:32.797234
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_197T02_9000000752cztM0_level2.evt modeM0/AS1A02_197T02_9000000752cztM0_level2_quad_clean.evt
Size (bytes)950,031,360200,718,720
Size906.0 MB 191.4 MB
Events in quadrant A6,869,7491,270,409
Events in quadrant B7,113,6801,299,394
Events in quadrant C6,708,7261,268,330
Events in quadrant D7,067,0341,210,341

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0311290
B0312500
C0308110
D0320700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03020
B03000
C03000
D03000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A149574262.848165%
B149434122.757144%
C149382841.901192%
D149443282.194861%

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 15147 15048 2 2 0.01% 0.01%
B 15147 15047 5 5 0.03% 0.03%
C 15147 15051 0 0 0.00% 0.00%
D 15147 15046 34 34 0.22% 0.23%

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 15 236 44966 121.32 1749 1705 356.6
A 4 2 39743 106.67 1749 1705 356.6
A 15 223 30252 80.06 1749 1705 356.6
B 15 204 231528 683.11 1768 1719 336.4
B 4 81 36592 103.66 1768 1719 336.4
B 12 111 32940 92.81 1768 1719 336.4
C 14 67 15166 34.24 1708 1711 393.0
C 9 16 14056 31.41 1708 1711 393.0
C 13 61 13957 31.16 1708 1711 393.0
D 12 233 215138 515.16 1703 1647 414.4
D 1 239 141900 338.44 1703 1647 414.4
D 13 172 117988 280.74 1703 1647 414.4

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