ASTROSAT CZTI

Data Quality Report

Orbit 20190227_A05_082T12_9000002738_level2

Creation date: 2019-02-28T10:10:46.773535
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/AS1A05_082T12_9000002738cztM0_level2_bc.evt modeM0/AS1A05_082T12_9000002738cztM0_level2_quad_clean.evt
Size (bytes)730,399,680245,108,160
Size696.6 MB 233.8 MB
Events in quadrant A4,089,0411,524,541
Events in quadrant B6,244,1851,544,407
Events in quadrant C5,381,8111,499,927
Events in quadrant D5,049,9551,490,814

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04040
B04040
C04040
D04040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0413200
B0487850
C0466240
D0441320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A198022051.035249%
B198028094.085446%
C198023431.732148%
D198022661.343299%

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 23052 19801 0 0 0.00% 0.00%
B 23052 19798 122 122 0.53% 0.62%
C 23052 19798 0 0 0.00% 0.00%
D 23052 19798 5 5 0.02% 0.03%

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 15 174 100568 448.79 1012 990 221.9
A 4 2 54483 241.09 1012 990 221.9
A 0 13 24361 105.33 1012 990 221.9
B 10 245 1995054 10184.77 1014 987 195.8
B 15 222 123123 623.81 1014 987 195.8
B 12 18 54756 274.63 1014 987 195.8
C 3 233 1560659 6705.64 988 980 232.6
C 8 128 10712 41.84 988 980 232.6
C 8 112 6214 22.5 988 980 232.6
D 7 38 290690 1222.49 1012 973 237.0
D 1 52 261237 1098.21 1012 973 237.0
D 10 66 145940 611.7 1012 973 237.0

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