ASTROSAT CZTI

Data Quality Report

Orbit 20180426_T02_041T01_9000002058_level2

Creation date: 2018-04-28T17:21:04.851131
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_041T01_9000002058cztM0_level2_bc.evt modeM0/AS1T02_041T01_9000002058cztM0_level2_quad_clean.evt
Size (bytes)3,890,289,6001,239,168,960
Size3.6 GB 1.2 GB
Events in quadrant A15,567,7648,022,451
Events in quadrant B21,878,8428,086,767
Events in quadrant C20,181,4838,407,437
Events in quadrant D54,884,3867,664,997

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01210
B01210
C01210
D01210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01605860
B01825500
C01726050
D02866060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015900
B015900
C015900
D015900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A780608041.029977%
B7806025073.211632%
C7806012591.612862%
D78060805310.316423%

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 90065 78052 1 1 0.00% 0.00%
B 90065 78051 231 231 0.26% 0.30%
C 90065 78050 42 42 0.05% 0.05%
D 90065 78050 1804 1804 2.00% 2.31%

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 1 162 138287 156.16 3947 3873 860.7
A 15 222 86461 95.95 3947 3873 860.7
A 14 111 56056 60.63 3947 3873 860.7
B 10 245 1772058 2340.04 3973 3862 755.6
B 0 85 1418877 1872.64 3973 3862 755.6
B 3 64 999836 1318.08 3973 3862 755.6
C 4 254 2810188 3107.19 4021 3981 903.1
C 3 233 1570414 1734.44 4021 3981 903.1
C 14 234 33227 32.38 4021 3981 903.1
D 1 52 30916654 34266.97 3841 3740 902.1
D 12 110 3180759 3521.73 3841 3740 902.1
D 13 122 2113301 2338.45 3841 3740 902.1

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