ASTROSAT CZTI

Data Quality Report

Orbit 20180109_A04_210T01_9000001824_level2

Creation date: 2018-07-30T14:44:26.946294
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/AS1A04_210T01_9000001824cztM0_level2_bc.evt modeM0/AS1A04_210T01_9000001824cztM0_level2_quad_clean.evt
Size (bytes)619,525,440196,531,200
Size590.8 MB 187.4 MB
Events in quadrant A4,183,0041,237,202
Events in quadrant B4,325,4791,269,635
Events in quadrant C3,151,8161,254,774
Events in quadrant D6,070,1211,151,783

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03060
B03060
C03060
D03060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370760
B0363060
C0312100
D0437270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A150543482.311678%
B150548225.460343%
C150541631.082769%
D1505411487.625880%

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 18665 15055 0 0 0.00% 0.00%
B 18665 15055 3 3 0.02% 0.02%
C 18665 15056 0 0 0.00% 0.00%
D 18665 15054 90 90 0.48% 0.60%

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 13 251 454428 2644.96 802 788 171.5
A 8 15 368700 2145.12 802 788 171.5
A 1 162 206042 1196.74 802 788 171.5
B 15 201 590962 3865.39 809 789 152.7
B 4 239 350221 2288.64 809 789 152.7
B 0 85 70263 455.03 809 789 152.7
C 15 208 19755 110.41 791 782 171.8
C 14 225 15878 87.85 791 782 171.8
C 8 128 9480 50.62 791 782 171.8
D 1 52 2108517 12234.6 762 736 172.3
D 13 170 264280 1529.74 762 736 172.3
D 10 253 256981 1487.37 762 736 172.3

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