ASTROSAT CZTI

Data Quality Report

Orbit 20161005_A02_199T01_9000000708_level2

Creation date: 2016-10-21T06:29:43.557782
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/AS1A02_199T01_9000000708cztM0_level2_bc.evt modeM0/AS1A02_199T01_9000000708cztM0_level2_quad_clean.evt
Size (bytes)1,391,356,800486,190,080
Size1.3 GB 463.7 MB
Events in quadrant A7,034,5733,205,094
Events in quadrant B9,932,1553,178,186
Events in quadrant C7,197,4423,062,981
Events in quadrant D15,549,5332,840,383

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0730350
B0813890
C0733130
D01081750

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0590

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07240
B07220
C07260
D07220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A355124001.126380%
B355025591.574559%
C355162870.808086%
D35447387810.940277%

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 41477 35575 12 12 0.03% 0.03%
B 41477 35577 22 22 0.05% 0.06%
C 41477 35576 1 1 0.00% 0.00%
D 41477 35572 46 46 0.11% 0.13%

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 50 159128 407.07 1737 1692 386.8
A 7 16 86265 218.67 1737 1692 386.8
A 13 14 21061 50.08 1737 1692 386.8
B 15 204 1357019 3973.83 1743 1693 341.1
B 15 255 837681 2451.12 1743 1693 341.1
B 10 16 375719 1096.65 1743 1693 341.1
C 1 241 346023 914.35 1676 1651 376.6
C 1 16 110566 289.18 1676 1651 376.6
C 9 221 80096 208.28 1676 1651 376.6
D 2 63 7435381 19028.96 1631 1567 390.7
D 2 152 569098 1452.76 1631 1567 390.7
D 12 233 316674 806.61 1631 1567 390.7

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