ASTROSAT CZTI

Data Quality Report

Orbit 20190309_A05_118T04_9000002782_level2

Creation date: 2019-03-11T12:07:48.414559
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_118T04_9000002782cztM0_level2_bc.evt modeM0/AS1A05_118T04_9000002782cztM0_level2_quad_clean.evt
Size (bytes)696,856,320279,904,320
Size664.6 MB 266.9 MB
Events in quadrant A4,507,3901,821,114
Events in quadrant B4,292,6171,865,642
Events in quadrant C4,319,4081,807,188
Events in quadrant D6,762,6871,753,857

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0403780
B0393630
C0401680
D0472980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03660
B03660
C03660
D03660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A178493802.128971%
B178492921.635946%
C178493912.190599%
D178495493.075803%

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 22669 17845 14 14 0.06% 0.08%
B 22669 17846 0 0 0.00% 0.00%
C 22669 17845 1 1 0.00% 0.01%
D 22669 17846 110 110 0.49% 0.62%

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 0 13 169602 747.31 1060 1043 225.6
A 14 111 109077 478.97 1060 1043 225.6
A 6 16 69347 302.83 1060 1043 225.6
B 0 230 93042 463.72 1078 1055 198.4
B 0 229 32508 158.56 1078 1055 198.4
B 4 80 28280 137.24 1078 1055 198.4
C 9 54 139133 574.36 1043 1041 240.4
C 3 233 127939 527.8 1043 1041 240.4
C 9 221 43718 177.5 1043 1041 240.4
D 1 52 1595776 6768.35 1053 1021 235.6
D 7 238 618175 2619.28 1053 1021 235.6
D 14 34 488851 2070.42 1053 1021 235.6

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