ASTROSAT CZTI

Data Quality Report

Orbit 20180425_A04_167T05_9000002052_level2

Creation date: 2018-04-27T16:01:14.044428
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_167T05_9000002052cztM0_level2_bc.evt modeM0/AS1A04_167T05_9000002052cztM0_level2_quad_clean.evt
Size (bytes)229,043,52086,186,880
Size218.4 MB 82.2 MB
Events in quadrant A1,344,116539,629
Events in quadrant B1,397,414545,087
Events in quadrant C1,332,980542,218
Events in quadrant D2,404,789523,197

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137440
B0138030
C0134780
D0169700

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66031161.756777%
B66031171.771922%
C6603881.332728%
D66031472.226261%

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 7263 6602 0 0 0.00% 0.00%
B 7263 6602 0 0 0.00% 0.00%
C 7263 6602 0 0 0.00% 0.00%
D 7263 6602 3 3 0.04% 0.05%

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 9 143 75457 1016.58 322 313 73.9
A 1 162 13023 171.95 322 313 73.9
A 8 15 9626 125.99 322 313 73.9
B 12 0 78050 1175.52 324 314 66.1
B 10 244 29018 434.06 324 314 66.1
B 4 173 13851 204.71 324 314 66.1
C 3 233 81912 1089.16 319 313 74.9
C 13 61 1862 20.68 319 313 74.9
C 7 247 947 8.46 319 313 74.9
D 1 52 490441 6296.52 316 304 77.8
D 13 122 468721 6017.49 316 304 77.8
D 8 195 38794 494.46 316 304 77.8

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