ASTROSAT CZTI

Data Quality Report

Orbit 20180303_G08_061T01_9000001938_level2

Creation date: 2018-07-06T11:52:34.389253
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_061T01_9000001938cztM0_level2_bc.evt modeM0/AS1G08_061T01_9000001938cztM0_level2_quad_clean.evt
Size (bytes)869,342,400255,202,560
Size829.1 MB 243.4 MB
Events in quadrant A4,502,2181,616,046
Events in quadrant B8,368,4351,555,999
Events in quadrant C3,913,5771,639,448
Events in quadrant D8,139,9691,505,467

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0432260
B0650110
C0418250
D0573660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04160
B04160
C04160
D04160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A204952561.249085%
B20495339516.565016%
C204952020.985606%
D2049514567.104172%

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 23296 20498 0 0 0.00% 0.00%
B 23296 20471 256 256 1.10% 1.25%
C 23296 20496 3 3 0.01% 0.01%
D 23296 20497 399 399 1.71% 1.95%

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 12 189 295005 1304.36 1004 980 225.4
A 0 23 161792 713.4 1004 980 225.4
A 13 248 56788 247.58 1004 980 225.4
B 4 239 3196248 17971.33 915 888 177.8
B 0 85 1000309 5620.94 915 888 177.8
B 3 64 252767 1416.62 915 888 177.8
C 14 234 15892 67.31 992 975 221.6
C 15 208 10809 44.37 992 975 221.6
C 13 61 6039 22.85 992 975 221.6
D 1 52 3967554 17531.37 967 929 226.3
D 5 222 210769 927.43 967 929 226.3
D 2 234 101200 443.17 967 929 226.3

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