ASTROSAT CZTI

Data Quality Report

Orbit 20180114_A04_085T02_9000001846_level2

Creation date: 2018-07-24T11:53:40.779283
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_085T02_9000001846cztM0_level2_bc.evt modeM0/AS1A04_085T02_9000001846cztM0_level2_quad_clean.evt
Size (bytes)635,817,600189,472,320
Size606.4 MB 180.7 MB
Events in quadrant A5,102,3281,169,393
Events in quadrant B4,222,7701,179,637
Events in quadrant C3,403,8461,162,739
Events in quadrant D5,422,7881,115,022

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0414660
B0374780
C0342840
D0413160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03320
B03320
C03320
D03320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A160936113.796682%
B160936714.169515%
C160933262.025725%
D160937754.815758%

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 17599 16091 3 3 0.02% 0.02%
B 17599 16093 2 2 0.01% 0.01%
C 17599 16091 9 9 0.05% 0.06%
D 17599 16094 98 98 0.56% 0.61%

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 1508758 8433.75 789 771 178.8
A 12 189 189073 1053.12 789 771 178.8
A 1 162 131057 728.65 789 771 178.8
B 4 239 600905 3836.77 791 768 156.4
B 3 64 221105 1408.65 791 768 156.4
B 0 190 85035 538.73 791 768 156.4
C 15 208 348000 1996.33 775 760 173.9
C 8 128 9925 52.69 775 760 173.9
C 8 112 5860 29.32 775 760 173.9
D 1 52 1494595 8108.99 775 743 184.2
D 13 104 414719 2247.16 775 743 184.2
D 2 14 135128 729.47 775 743 184.2

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