ASTROSAT CZTI

Data Quality Report

Orbit 20170416_C02_030T01_9000001168_level2

Creation date: 2017-09-23T17:49:20.028224
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_030T01_9000001168cztM0_level2.evt modeM0/AS1C02_030T01_9000001168cztM0_level2_quad_clean.evt
Size (bytes)973,635,840288,688,320
Size928.5 MB 275.3 MB
Events in quadrant A7,000,7371,938,805
Events in quadrant B7,373,3541,973,321
Events in quadrant C6,679,6201,939,939
Events in quadrant D7,416,5581,857,104

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0309310
B0314980
C0304820
D0326170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03060
B03060
C03060
D03060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15010970.646236%
B150021070.713238%
C15011300.199853%
D150181120.745772%

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 18630 15033 26 26 0.14% 0.17%
B 18630 15031 14 14 0.08% 0.09%
C 18630 15029 1 1 0.01% 0.01%
D 18630 15033 69 69 0.37% 0.46%

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 14 111 150977 423.75 1768 1736 352.2
A 1 162 24391 64.33 1768 1736 352.2
A 0 226 17009 43.37 1768 1736 352.2
B 0 214 230072 701.95 1772 1729 325.3
B 10 16 76196 228.92 1772 1729 325.3
B 4 81 55582 165.55 1772 1729 325.3
C 1 16 28546 69.36 1705 1711 386.9
C 13 61 13304 29.96 1705 1711 386.9
C 3 202 4338 6.79 1705 1711 386.9
D 13 122 217138 532.16 1703 1652 404.9
D 12 233 143903 351.3 1703 1652 404.9
D 7 71 97472 236.64 1703 1652 404.9

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