ASTROSAT CZTI

Data Quality Report

Orbit 20180405_G08_044T01_9000002014_level2

Creation date: 2018-04-07T10:33:16.239829
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_044T01_9000002014cztM0_level2_bc.evt modeM0/AS1G08_044T01_9000002014cztM0_level2_quad_clean.evt
Size (bytes)708,183,360241,318,080
Size675.4 MB 230.1 MB
Events in quadrant A4,073,5021,546,137
Events in quadrant B5,262,4971,526,233
Events in quadrant C4,352,2751,489,357
Events in quadrant D6,466,8471,446,225

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03860
B03860
C03860
D03860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0395940
B0445660
C0394970
D0472120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A188831500.794365%
B188833631.922364%
C18883870.460732%
D188833631.922364%

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 23559 18886 1 1 0.00% 0.01%
B 23559 18884 2 2 0.01% 0.01%
C 23559 18885 0 0 0.00% 0.00%
D 23559 18884 18 18 0.08% 0.10%

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 3 0 54589 238.17 1030 1007 225.0
A 1 162 34516 148.94 1030 1007 225.0
A 15 69 23688 100.82 1030 1007 225.0
B 0 219 471030 2427.43 1021 995 193.6
B 0 85 331734 1708.06 1021 995 193.6
B 0 189 138372 709.47 1021 995 193.6
C 3 233 478333 2205.66 988 974 216.4
C 14 234 6026 23.34 988 974 216.4
C 13 61 5929 22.89 988 974 216.4
D 5 222 787617 3475.72 995 962 226.3
D 8 195 769630 3396.25 995 962 226.3
D 12 6 712835 3145.31 995 962 226.3

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