ASTROSAT CZTI

Data Quality Report

Orbit 20180719_T02_068T01_9000002238_level2

Creation date: 2018-07-30T20:08:44.206228
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/AS1T02_068T01_9000002238cztM0_level2_bc.evt modeM0/AS1T02_068T01_9000002238cztM0_level2_quad_clean.evt
Size (bytes)4,457,655,3601,509,609,600
Size4.2 GB 1.4 GB
Events in quadrant A30,018,6399,618,744
Events in quadrant B33,403,1059,410,619
Events in quadrant C33,033,3289,433,862
Events in quadrant D30,463,8679,129,674

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024160
B024160
C024160
D024160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02670720
B02852650
C02700360
D02663010

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01630

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11866320581.734323%
B11866368645.784448%
C11866315741.326445%
D11866333752.844189%

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 138880 118671 11 11 0.01% 0.01%
B 138880 118662 538 538 0.39% 0.45%
C 138880 118667 1 1 0.00% 0.00%
D 138880 118667 854 854 0.61% 0.72%

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 15 239 5408394 4088.87 6047 5922 1321.3
A 12 189 873487 656.62 6047 5922 1321.3
A 0 253 234976 173.36 6047 5922 1321.3
B 3 112 8244583 7319.17 5994 5837 1125.6
B 3 64 774804 683.14 5994 5837 1125.6
B 4 48 322686 281.48 5994 5837 1125.6
C 3 233 9719617 7472.86 5927 5844 1299.9
C 13 61 34725 22.22 5927 5844 1299.9
C 14 234 34255 21.86 5927 5844 1299.9
D 2 33 5110355 3709.78 5929 5706 1376.0
D 10 70 479893 344.61 5929 5706 1376.0
D 2 234 429108 307.71 5929 5706 1376.0

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