ASTROSAT CZTI

Data Quality Report

Orbit 18913

Creation date: 2024-06-27T17:56:28.351347
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/AS1A05_163T01_9000002820_18913cztM0_level2.evt modeM0/AS1A05_163T01_9000002820_18913cztM0_level2_quad_clean.evt
Size (bytes)809,337,60091,759,680
Size771.8 MB 87.5 MB
Events in quadrant A12,055,979408,418
Events in quadrant B5,104,685632,248
Events in quadrant C3,380,150637,693
Events in quadrant D3,502,899618,279

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0405272
B0198302
C0144032
D0149722

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6895416360.377085%
B68964857.033063%
C68961021.479118%
D6895590.855693%

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 8760 6895 3039 3039 34.69% 44.08%
B 8761 6897 232 232 2.65% 3.36%
C 8761 6898 2 2 0.02% 0.03%
D 8760 6897 8 8 0.09% 0.12%

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 14 235 10032079 93213.95 525 514 107.6
A 13 254 6487 55.5 525 514 107.6
A 0 226 4487 36.92 525 514 107.6
B 3 112 1524581 9556.66 829 807 159.4
B 7 220 112628 701.31 829 807 159.4
B 0 189 86670 538.51 829 807 159.4
C 14 238 126258 654.81 815 821 191.6
C 3 233 59747 307.61 815 821 191.6
C 5 112 15430 76.26 815 821 191.6
D 7 238 191421 942.01 821 799 202.4
D 12 110 154420 759.16 821 799 202.4
D 2 234 34001 164.08 821 799 202.4

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