ASTROSAT CZTI

Data Quality Report

Orbit 20220618_A10_103T02_9000005192_level2

Creation date: 2022-06-21T14:09:02.105409
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A10_103T02_9000005192cztM0_level2_bc.evt modeM0/AS1A10_103T02_9000005192cztM0_level2_quad_clean.evt
Size (bytes)1,444,887,360514,987,200
Size1.3 GB 491.1 MB
Events in quadrant A7,804,3973,516,066
Events in quadrant B12,574,0033,348,175
Events in quadrant C8,855,1913,401,041
Events in quadrant D12,406,0173,197,689

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01450
B01450
C01450
D01450

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06360
B06360
C06360
D06360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0658360
B0900080
C0682560
D0856170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A310741120.360430%
B3107426558.544120%
C310743371.084508%
D3107415685.046019%

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 44734 31081 6 6 0.01% 0.02%
B 44733 31059 80 80 0.18% 0.26%
C 44733 31073 20 20 0.04% 0.06%
D 44734 31069 142 142 0.32% 0.46%

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 10 83 890738 2420.29 1655 1637 367.4
A 9 143 322397 873.17 1655 1637 367.4
A 7 3 66276 175.96 1655 1637 367.4
B 4 171 2652631 8361.79 1591 1563 317.0
B 5 172 1577941 4972.09 1591 1563 317.0
B 5 236 872289 2746.37 1591 1563 317.0
C 15 214 1249607 3421.42 1589 1583 364.8
C 0 10 780393 2135.09 1589 1583 364.8
C 0 207 545862 1492.13 1589 1583 364.8
D 12 6 2558946 6845.81 1577 1535 373.6
D 12 227 700300 1870.49 1577 1535 373.6
D 2 249 486539 1298.28 1577 1535 373.6

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