ASTROSAT CZTI

Data Quality Report

Orbit 20180401_G08_047T01_9000002002_level2

Creation date: 2018-04-03T10:49:36.419535
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_047T01_9000002002cztM0_level2_bc.evt modeM0/AS1G08_047T01_9000002002cztM0_level2_quad_clean.evt
Size (bytes)2,746,632,9601,004,284,800
Size2.6 GB 957.8 MB
Events in quadrant A15,920,4316,368,346
Events in quadrant B19,812,8946,377,618
Events in quadrant C18,454,1096,347,880
Events in quadrant D23,750,8626,048,944

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01596890
B01743890
C01628680
D01836950

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015680
B015680
C015680
D015680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01170
B01170
C01170
D01170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A769597050.916072%
B7695920552.670253%
C769595770.749750%
D7695918612.418171%

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 88685 76951 2 2 0.00% 0.00%
B 88685 76949 101 101 0.11% 0.13%
C 88685 76953 2 2 0.00% 0.00%
D 88685 76948 116 116 0.13% 0.15%

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 162401 180.61 4038 3958 877.3
A 15 69 57682 61.24 4038 3958 877.3
A 2 250 54403 57.5 4038 3958 877.3
B 0 182 1970506 2564.07 4050 3946 767.0
B 3 64 815501 1058.14 4050 3946 767.0
B 4 142 285707 367.37 4050 3946 767.0
C 3 233 2898364 3387.31 3945 3901 854.5
C 0 207 49760 53.67 3945 3901 854.5
C 14 234 46555 49.92 3945 3901 854.5
D 5 222 2253502 2453.08 3963 3819 917.1
D 8 195 1529204 1663.29 3963 3819 917.1
D 1 20 1424144 1548.74 3963 3819 917.1

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