ASTROSAT CZTI

Data Quality Report

Orbit 20190308_A05_083T01_9000002772_level2

Creation date: 2019-03-29T13:04:10.391888
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_083T01_9000002772cztM0_level2_bc.evt modeM0/AS1A05_083T01_9000002772cztM0_level2_quad_clean.evt
Size (bytes)642,623,040233,144,640
Size612.9 MB 222.3 MB
Events in quadrant A4,585,3541,450,271
Events in quadrant B4,276,2751,482,579
Events in quadrant C4,177,0211,434,106
Events in quadrant D5,144,0181,407,394

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0411950
B0404070
C0405150
D0429820

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03820
D03820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186742941.574381%
B186742691.440506%
C186743461.852844%
D186743752.008140%

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 22799 18670 39 39 0.17% 0.21%
B 22799 18670 0 0 0.00% 0.00%
C 22799 18672 2 2 0.01% 0.01%
D 22799 18671 33 33 0.14% 0.18%

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 0 13 518577 2328.39 1035 1015 222.3
A 13 254 29634 128.75 1035 1015 222.3
A 9 143 28692 124.51 1035 1015 222.3
B 0 230 87537 437.34 1053 1026 197.8
B 0 229 32889 161.08 1053 1026 197.8
B 0 190 32586 159.54 1053 1026 197.8
C 3 233 165615 700.46 1013 1005 235.0
C 9 54 115182 485.85 1013 1005 235.0
C 13 61 5914 20.89 1013 1005 235.0
D 1 52 513643 2196.87 1029 993 233.4
D 5 222 315887 1349.42 1029 993 233.4
D 7 238 124121 527.64 1029 993 233.4

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