ASTROSAT CZTI

Data Quality Report

Orbit 20190420_A05_115T01_9000002848_level2

Creation date: 2019-04-22T11:32:56.412091
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_115T01_9000002848cztM0_level2_bc.evt modeM0/AS1A05_115T01_9000002848cztM0_level2_quad_clean.evt
Size (bytes)2,126,753,280816,900,480
Size2.0 GB 779.1 MB
Events in quadrant A13,179,7415,179,220
Events in quadrant B12,735,6585,295,074
Events in quadrant C13,963,8585,099,643
Events in quadrant D20,345,7884,960,872

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012560
B012560
C012560
D012560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0870
B0870
C0870
D0870

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01289010
B01276660
C01321420
D01509470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A613456141.000897%
B613457441.212813%
C6134510131.651316%
D6134517232.808705%

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 70385 61341 25 25 0.04% 0.04%
B 70385 61343 13 13 0.02% 0.02%
C 70385 61341 7 7 0.01% 0.01%
D 70385 61342 501 501 0.71% 0.82%

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 8 205 174610 245.96 3242 3178 697.0
A 5 16 167938 236.38 3242 3178 697.0
A 5 247 124750 174.42 3242 3178 697.0
B 3 64 80362 125.47 3282 3195 615.0
B 0 214 68429 106.06 3282 3195 615.0
B 0 229 42469 63.86 3282 3195 615.0
C 3 233 1453450 1950.37 3180 3158 743.6
C 6 96 117772 154.13 3180 3158 743.6
C 9 54 101726 132.56 3180 3158 743.6
D 1 52 5620691 7591.05 3206 3093 740.0
D 7 238 901746 1214.35 3206 3093 740.0
D 5 222 536171 720.35 3206 3093 740.0

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