ASTROSAT CZTI

Data Quality Report

Orbit 28944

Creation date: 2024-06-27T19:58:20.702746
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_082T04_9000004150_28944cztM0_level2.evt modeM0/AS1A10_082T04_9000004150_28944cztM0_level2_quad_clean.evt
Size (bytes)1,676,727,360197,225,280
Size1.6 GB 188.1 MB
Events in quadrant A8,427,7621,242,198
Events in quadrant B8,722,0591,265,488
Events in quadrant C8,620,3221,212,025
Events in quadrant D23,800,5861,016,675

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03660
B03660
C03660
D03660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0365833
B0372703
C0367983
D0827803

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A179101770.988275%
B179112111.178047%
C179114462.490090%
D17911584032.605661%

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 19959 17912 5 5 0.03% 0.03%
B 19960 17913 10 10 0.05% 0.06%
C 19960 17913 0 0 0.00% 0.00%
D 19960 17913 5656 5656 28.34% 31.57%

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 12 96 57496 127.31 2165 2119 435.0
A 13 254 29523 63.0 2165 2119 435.0
A 3 137 21758 45.15 2165 2119 435.0
B 10 245 195554 472.59 2146 2090 409.4
B 12 111 52123 122.22 2146 2090 409.4
B 11 111 47118 109.99 2146 2090 409.4
C 14 238 394987 811.73 2065 2074 484.0
C 14 254 99938 202.18 2065 2074 484.0
C 2 114 42655 83.84 2065 2074 484.0
D 8 195 13311192 30031.18 1853 1803 443.2
D 1 52 3241289 7309.55 1853 1803 443.2
D 12 79 129356 287.81 1853 1803 443.2

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