ASTROSAT CZTI

Data Quality Report

Orbit 20190429_A05_104T05_9000002870_level2

Creation date: 2019-05-01T12:37:31.897453
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_104T05_9000002870cztM0_level2.evt modeM0/AS1A05_104T05_9000002870cztM0_level2_quad_clean.evt
Size (bytes)1,647,002,880183,689,280
Size1.5 GB 175.2 MB
Events in quadrant A6,882,1521,230,307
Events in quadrant B6,912,5441,245,960
Events in quadrant C6,877,7481,211,043
Events in quadrant D28,263,624906,781

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02860
B02860
C02860
D02860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0294540
B0294580
C0292580
D0935300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A140101701.213419%
B140102211.577445%
C140103012.148465%
D14010827459.057816%

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 16415 14012 0 0 0.00% 0.00%
B 16415 14012 0 0 0.00% 0.00%
C 16415 14011 0 0 0.00% 0.00%
D 16415 14010 7859 7859 47.88% 56.10%

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 14 111 43023 117.74 1756 1718 350.8
A 15 174 42848 117.24 1756 1718 350.8
A 12 96 21445 56.23 1756 1718 350.8
B 0 198 48547 139.62 1750 1703 335.5
B 12 111 41255 117.89 1750 1703 335.5
B 11 111 36509 103.74 1750 1703 335.5
C 14 238 263355 652.64 1696 1709 400.9
C 13 61 11874 25.36 1696 1709 400.9
C 3 233 8314 16.48 1696 1709 400.9
D 10 66 13442970 43509.75 1291 1256 308.9
D 7 238 8438400 27310.36 1291 1256 308.9
D 1 52 1372263 4437.84 1291 1256 308.9

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