ASTROSAT CZTI

Data Quality Report

Orbit 26063

Creation date: 2024-06-27T19:24:24.468707
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/AS1A09_142T01_9000003766_26063cztM0_level2.evt modeM0/AS1A09_142T01_9000003766_26063cztM0_level2_quad_clean.evt
Size (bytes)1,693,964,160232,732,800
Size1.6 GB 222.0 MB
Events in quadrant A8,459,5601,579,868
Events in quadrant B8,851,9091,583,917
Events in quadrant C8,650,3371,518,446
Events in quadrant D24,096,0511,094,261

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0374460
B0384000
C0376960
D0845120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18429540.293016%
B184291500.813935%
C184291780.965869%
D18429597832.438005%

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 20494 18431 0 0 0.00% 0.00%
B 20494 18431 28 28 0.14% 0.15%
C 20494 18431 0 0 0.00% 0.00%
D 20493 18428 5835 5835 28.47% 31.66%

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 13 254 32666 69.49 2189 2137 439.3
A 3 137 20133 40.97 2189 2137 439.3
A 0 226 18673 37.64 2189 2137 439.3
B 5 172 159959 382.07 2179 2123 413.1
B 0 190 86851 205.1 2179 2123 413.1
B 12 111 50380 116.81 2179 2123 413.1
C 14 238 336635 678.85 2105 2120 492.8
C 3 233 74195 146.27 2105 2120 492.8
C 2 16 22488 41.33 2105 2120 492.8
D 1 3 14685364 34741.63 1708 1670 422.7
D 1 52 2035787 4812.72 1708 1670 422.7
D 7 38 494943 1167.08 1708 1670 422.7

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