ASTROSAT CZTI

Data Quality Report

Orbit 20180813_G08_030T01_9000002302_level2

Creation date: 2018-08-14T18:32:19.708449
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/AS1G08_030T01_9000002302cztM0_level2_bc.evt modeM0/AS1G08_030T01_9000002302cztM0_level2_quad_clean.evt
Size (bytes)2,183,253,120849,150,720
Size2.0 GB 809.8 MB
Events in quadrant A13,474,8785,479,701
Events in quadrant B15,751,4195,482,437
Events in quadrant C13,179,9805,210,610
Events in quadrant D19,326,1535,135,354

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01345430
B01427790
C01346940
D01523710

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013120
B013120
C013120
D013120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A643359101.414471%
B6433515932.476102%
C6433512151.888552%
D6433519803.077640%

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 74126 64332 8 8 0.01% 0.01%
B 74126 64332 42 42 0.06% 0.07%
C 74126 64331 13 13 0.02% 0.02%
D 74126 64332 475 475 0.64% 0.74%

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 0 253 170790 225.79 3442 3378 741.4
A 9 143 58805 74.76 3442 3378 741.4
A 15 249 30398 36.44 3442 3378 741.4
B 3 64 1668052 2581.65 3448 3368 644.8
B 4 48 264552 405.05 3448 3368 644.8
B 0 189 162059 246.1 3448 3368 644.8
C 3 233 274623 353.51 3285 3271 767.6
C 10 22 128515 163.16 3285 3271 767.6
C 10 187 57637 70.83 3285 3271 767.6
D 1 52 3082015 3635.61 3329 3235 846.8
D 5 222 1873685 2208.74 3329 3235 846.8
D 13 104 418855 490.79 3329 3235 846.8

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