ASTROSAT CZTI

Data Quality Report

Orbit 20180818_T02_086T01_9000002316_level2

Creation date: 2018-08-23T15:11:21.544600
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/AS1T02_086T01_9000002316cztM0_level2_bc.evt modeM0/AS1T02_086T01_9000002316cztM0_level2_quad_clean.evt
Size (bytes)6,684,108,4802,556,872,640
Size6.2 GB 2.4 GB
Events in quadrant A39,784,86916,385,718
Events in quadrant B41,981,55416,558,542
Events in quadrant C41,518,69216,202,030
Events in quadrant D66,490,80415,571,477

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02770
B02770
C02770
D02770

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03883810
B03927160
C03975250
D04758760

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037780
B037780
C037780
D037780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18586624271.305779%
B18586626541.427910%
C18586632411.743729%
D18586687194.691014%

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 213202 185842 28 28 0.01% 0.02%
B 213202 185845 33 33 0.02% 0.02%
C 213202 185847 10 10 0.00% 0.01%
D 213201 185846 2749 2749 1.29% 1.48%

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 15 249 726328 339.68 9725 9562 2110.1
A 15 157 634743 296.28 9725 9562 2110.1
A 13 248 296018 135.75 9725 9562 2110.1
B 0 189 751413 407.6 9802 9569 1820.0
B 3 209 565338 305.36 9802 9569 1820.0
B 5 65 459002 246.94 9802 9569 1820.0
C 3 233 4612341 2094.36 9452 9415 2197.8
C 7 247 165133 70.85 9452 9415 2197.8
C 14 225 118895 49.81 9452 9415 2197.8
D 1 52 24798524 11311.4 9521 9194 2191.5
D 12 110 1393295 631.57 9521 9194 2191.5
D 15 0 766238 345.44 9521 9194 2191.5

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