ASTROSAT CZTI

Data Quality Report

Orbit 20180224_A04_149T01_9000001918_level2

Creation date: 2018-07-09T12:51:27.685033
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_149T01_9000001918cztM0_level2_bc.evt modeM0/AS1A04_149T01_9000001918cztM0_level2_quad_clean.evt
Size (bytes)5,068,560,9601,625,135,040
Size4.7 GB 1.5 GB
Events in quadrant A29,482,28310,727,281
Events in quadrant B49,945,1989,400,850
Events in quadrant C23,940,39310,838,909
Events in quadrant D42,017,84710,090,883

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02597300
B03905660
C02440210
D03034740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01930
B01930
C01930
D01930

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024280
B024280
C024280
D024280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11907119821.664553%
B1190712447720.556643%
C11907112241.027958%
D11907150674.255444%

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 138378 119075 60 60 0.04% 0.05%
B 138378 118481 1746 1746 1.26% 1.47%
C 138378 119073 2 2 0.00% 0.00%
D 138378 119058 1030 1030 0.74% 0.87%

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 8 15 2513657 1911.15 6071 5953 1312.1
A 12 189 2027105 1540.35 6071 5953 1312.1
A 15 223 511202 385.06 6071 5953 1312.1
B 4 239 21514982 21251.34 5371 5237 1012.2
B 3 64 3076825 3034.69 5371 5237 1012.2
B 0 85 2525236 2489.72 5371 5237 1012.2
C 14 234 69625 47.74 6075 6002 1332.6
C 12 4 47301 30.99 6075 6002 1332.6
C 8 222 45048 29.3 6075 6002 1332.6
D 1 52 13969225 10095.73 5940 5736 1383.1
D 8 195 3422952 2470.68 5940 5736 1383.1
D 14 34 1188509 855.16 5940 5736 1383.1

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