ASTROSAT CZTI

Data Quality Report

Orbit 20170615_A03_091T06_9000001302_level2

Creation date: 2017-09-24T05:09:28.162497
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_091T06_9000001302cztM0_level2.evt modeM0/AS1A03_091T06_9000001302cztM0_level2_quad_clean.evt
Size (bytes)1,105,545,600171,936,000
Size1.0 GB 164.0 MB
Events in quadrant A9,966,6341,040,687
Events in quadrant B7,272,6301,076,874
Events in quadrant C6,758,6571,066,759
Events in quadrant D8,486,6661,006,160

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0394230
B0311510
C0304290
D0352910

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B090
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03040
B03100
C02980
D03020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A145747495.139289%
B147074673.175359%
C148033402.296832%
D147367274.933496%

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 17115 15288 183 183 1.07% 1.20%
B 17115 15399 13 13 0.08% 0.08%
C 17115 15465 0 0 0.00% 0.00%
D 17115 15408 329 329 1.92% 2.14%

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 2270419 6458.57 1725 1683 351.3
A 5 16 773157 2196.21 1725 1683 351.3
A 4 2 88969 248.48 1725 1683 351.3
B 0 214 180265 527.15 1763 1714 338.7
B 8 234 86774 251.13 1763 1714 338.7
B 12 111 37290 105.03 1763 1714 338.7
C 9 68 21263 48.52 1724 1731 402.5
C 13 61 13117 28.29 1724 1731 402.5
C 8 222 9394 19.04 1724 1731 402.5
D 12 233 639984 1410.58 1687 1643 452.5
D 10 199 461203 1015.52 1687 1643 452.5
D 1 52 370841 815.84 1687 1643 452.5

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