ASTROSAT CZTI

Data Quality Report

Orbit 20161210_G06_136T02_9000000876_level2

Creation date: 2017-09-21T12:56:26.403608
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/AS1G06_136T02_9000000876cztM0_level2.evt modeM0/AS1G06_136T02_9000000876cztM0_level2_quad_clean.evt
Size (bytes)7,392,044,1601,369,549,440
Size6.9 GB 1.3 GB
Events in quadrant A51,766,7808,572,001
Events in quadrant B55,261,8268,732,376
Events in quadrant C49,021,9478,579,918
Events in quadrant D60,489,5098,155,010

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02296460
B02381610
C02245720
D02570120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022080
B022080
C022080
D022080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01870
B01870
C01870
D01870

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10863314561.340293%
B10862819811.823655%
C1086308790.809169%
D10863020481.885299%

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 127192 108664 110 110 0.09% 0.10%
B 127192 108664 594 594 0.47% 0.55%
C 127192 108664 130 130 0.10% 0.12%
D 127192 108664 973 973 0.76% 0.90%

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 15 236 2204611 866.8 12606 12331 2529.2
A 8 15 591964 229.18 12606 12331 2529.2
A 15 234 359781 137.38 12606 12331 2529.2
B 5 143 2328085 971.65 12690 12397 2383.3
B 4 48 689543 284.13 12690 12397 2383.3
B 0 228 661192 272.23 12690 12397 2383.3
C 9 237 914031 322.28 12220 12268 2798.1
C 4 254 169623 56.24 12220 12268 2798.1
C 1 16 125187 40.36 12220 12268 2798.1
D 2 152 3941586 1329.28 12177 11796 2956.3
D 13 137 2175069 731.74 12177 11796 2956.3
D 2 136 1859223 624.91 12177 11796 2956.3

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