ASTROSAT CZTI

Data Quality Report

Orbit 20170614_A03_091T04_9000001294_level2

Creation date: 2017-09-24T04:54:52.632795
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/AS1A03_091T04_9000001294cztM0_level2.evt modeM0/AS1A03_091T04_9000001294cztM0_level2_quad_clean.evt
Size (bytes)751,550,400131,184,000
Size716.7 MB 125.1 MB
Events in quadrant A6,080,409808,193
Events in quadrant B5,412,280821,702
Events in quadrant C5,115,064800,886
Events in quadrant D5,405,412779,337

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02260
B02260
C02260
D02260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0249420
B0232350
C0229250
D0238980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A110244904.444848%
B110234504.082373%
C110243403.084180%
D110243733.383527%

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 11344 11030 17 17 0.15% 0.15%
B 11344 11030 1 1 0.01% 0.01%
C 11344 11030 3 3 0.03% 0.03%
D 11344 11030 47 47 0.41% 0.43%

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 5 783581 2864.63 1323 1291 273.1
A 15 174 107681 389.58 1323 1291 273.1
A 1 162 50146 178.9 1323 1291 273.1
B 0 219 51407 194.55 1330 1293 257.6
B 0 214 50933 192.71 1330 1293 257.6
B 0 187 45592 171.97 1330 1293 257.6
C 14 234 29515 93.58 1296 1299 301.5
C 8 128 14098 42.45 1296 1299 301.5
C 13 61 9707 27.88 1296 1299 301.5
D 2 136 152654 448.19 1287 1254 337.8
D 1 52 149919 440.09 1287 1254 337.8
D 7 71 137646 403.76 1287 1254 337.8

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