ASTROSAT CZTI

Data Quality Report

Orbit 20170314_A02_158T01_9000001080_level2

Creation date: 2017-09-23T09:55:01.625915
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/AS1A02_158T01_9000001080cztM0_level2.evt modeM0/AS1A02_158T01_9000001080cztM0_level2_quad_clean.evt
Size (bytes)2,482,306,560443,594,880
Size2.3 GB 423.0 MB
Events in quadrant A15,518,5112,828,992
Events in quadrant B16,238,0472,886,321
Events in quadrant C18,262,5072,845,947
Events in quadrant D22,882,6772,558,455

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0694410
B0709440
C0767360
D0915450

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06860
B06860
C06860
D06860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A337114231.254783%
B337114681.388271%
C337114131.225119%
D3371128918.575836%

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 38536 33717 12 12 0.03% 0.04%
B 38536 33717 32 32 0.08% 0.09%
C 38536 33717 36 36 0.09% 0.11%
D 38536 33717 2524 2524 6.55% 7.49%

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 73190 86.84 3962 3884 798.1
A 15 239 56179 65.53 3962 3884 798.1
A 15 234 51245 59.35 3962 3884 798.1
B 4 239 232517 301.54 4004 3902 758.2
B 5 255 158788 204.29 4004 3902 758.2
B 4 81 119805 152.87 4004 3902 758.2
C 1 16 2966753 3307.74 3886 3910 895.7
C 9 68 77308 81.94 3886 3910 895.7
C 14 67 62767 65.71 3886 3910 895.7
D 1 20 8027807 8805.0 3721 3603 911.3
D 1 52 384804 418.29 3721 3603 911.3
D 2 234 111390 118.28 3721 3603 911.3

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