ASTROSAT CZTI

Data Quality Report

Orbit 36249

Creation date: 2022-06-15T09:20:57.945968
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_071T37_9000005180_36249cztM0_level2.evt modeM0/AS1A10_071T37_9000005180_36249cztM0_level2_quad_clean.evt
Size (bytes)471,942,72045,213,120
Size450.1 MB 43.1 MB
Events in quadrant A2,522,030270,758
Events in quadrant B4,798,369231,564
Events in quadrant C3,267,832263,512
Events in quadrant D3,360,291246,904

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105913
B0176382
C0126772
D0133082

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5075120.236453%
B507589917.714286%
C50751723.389163%
D50751883.704433%

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 9171 5077 11 11 0.12% 0.22%
B 9170 5076 663 663 7.23% 13.06%
C 9171 5077 159 159 1.73% 3.13%
D 9171 5077 191 191 2.08% 3.76%

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 169185 1402.77 595 585 120.2
A 9 143 42807 351.29 595 585 120.2
A 13 254 8135 62.82 595 585 120.2
B 5 172 1838907 17103.51 554 539 107.5
B 4 171 591709 5500.03 554 539 107.5
B 5 236 90595 837.85 554 539 107.5
C 0 10 430445 3182.34 574 578 135.1
C 0 207 381100 2817.04 574 578 135.1
C 15 214 211412 1560.82 574 578 135.1
D 12 6 498749 3537.48 568 551 140.8
D 2 250 218917 1550.52 568 551 140.8
D 13 249 133136 941.43 568 551 140.8

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