ASTROSAT CZTI

Data Quality Report

Orbit 29045

Creation date: 2024-06-27T19:59:36.475334
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/AS1C05_019T04_9000004162_29045cztM0_level2.evt modeM0/AS1C05_019T04_9000004162_29045cztM0_level2_quad_clean.evt
Size (bytes)1,280,954,880280,347,840
Size1.2 GB 267.4 MB
Events in quadrant A8,222,6071,839,066
Events in quadrant B8,460,3031,871,356
Events in quadrant C8,398,5271,805,547
Events in quadrant D12,497,2601,736,482

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03660
B03660
C03660
D03660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0363763
B0369303
C0365033
D0491654

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A179771460.812149%
B179781630.906664%
C179781961.090221%
D179775963.315347%

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 19807 17977 0 0 0.00% 0.00%
B 19808 17978 15 15 0.08% 0.08%
C 19808 17978 4 4 0.02% 0.02%
D 19807 17977 381 381 1.92% 2.12%

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 6 16 46824 105.35 2114 2066 424.8
A 13 254 31535 69.36 2114 2066 424.8
A 3 137 21214 45.07 2114 2066 424.8
B 10 245 103756 257.01 2099 2043 395.8
B 12 111 49968 121.1 2099 2043 395.8
B 11 111 45441 109.66 2099 2043 395.8
C 14 238 327619 688.21 2025 2034 473.1
C 3 233 91167 188.41 2025 2034 473.1
C 2 16 42877 86.33 2025 2034 473.1
D 1 52 2916563 6070.14 2021 1960 480.2
D 8 195 1510672 3142.14 2021 1960 480.2
D 2 250 216269 446.33 2021 1960 480.2

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