ASTROSAT CZTI

Data Quality Report

Orbit 20180628_A04_148T02_9000002198_level2

Creation date: 2018-06-30T10:15:50.215609
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_148T02_9000002198cztM0_level2_bc.evt modeM0/AS1A04_148T02_9000002198cztM0_level2_quad_clean.evt
Size (bytes)1,021,273,920378,288,000
Size974.0 MB 360.8 MB
Events in quadrant A6,079,6812,418,537
Events in quadrant B6,712,7202,406,616
Events in quadrant C6,103,6912,355,468
Events in quadrant D10,078,5692,310,120

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0592390
B0623580
C0586760
D0721780

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05820
B05820
C05820
D05820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A286271180.412198%
B286272630.918713%
C28627830.289936%
D286275742.005100%

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 32383 28630 3 3 0.01% 0.01%
B 32383 28629 11 11 0.03% 0.04%
C 32383 28629 0 0 0.00% 0.00%
D 32383 28629 341 341 1.05% 1.19%

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 434689 1358.63 1441 1415 318.9
A 9 143 47461 144.39 1441 1415 318.9
A 15 239 28244 84.13 1441 1415 318.9
B 0 219 347733 1251.65 1433 1395 276.7
B 0 189 227437 816.9 1433 1395 276.7
B 3 64 126094 450.66 1433 1395 276.7
C 3 233 628651 2038.13 1385 1366 307.8
C 0 207 15621 46.32 1385 1366 307.8
C 3 232 13826 40.48 1385 1366 307.8
D 13 104 3430262 10231.69 1401 1358 335.1
D 7 254 719395 2142.59 1401 1358 335.1
D 10 70 196014 580.84 1401 1358 335.1

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