ASTROSAT CZTI

Data Quality Report

Orbit 34848

Creation date: 2022-03-09T17:47:28.974709
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/AS1C07_005T01_9000004992_34848cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34848cztM0_level2_quad_clean.evt
Size (bytes)730,906,56083,335,680
Size697.0 MB 79.5 MB
Events in quadrant A7,495,058400,831
Events in quadrant B7,043,959554,152
Events in quadrant C3,144,059603,135
Events in quadrant D4,073,319571,342

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261972
B0246741
C0127051
D0160021

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5614220739.312433%
B5614152627.182045%
C5614991.763449%
D56141893.366584%

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 6897 5615 1289 1289 18.69% 22.96%
B 6897 5615 1307 1307 18.95% 23.28%
C 6897 5615 83 83 1.20% 1.48%
D 6896 5614 173 173 2.51% 3.08%

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 15 169 5787128 65976.99 429 420 87.7
A 10 83 23882 267.5 429 420 87.7
A 13 6 11304 124.09 429 420 87.7
B 5 14 1216417 10653.69 597 582 114.1
B 5 31 1205838 10560.99 597 582 114.1
B 5 15 1203771 10542.88 597 582 114.1
C 15 214 252556 1756.7 617 620 143.4
C 0 10 211205 1468.37 617 620 143.4
C 0 207 195303 1357.49 617 620 143.4
D 8 195 592151 3749.78 617 601 157.8
D 12 233 349671 2212.72 617 601 157.8
D 13 249 126609 798.75 617 601 157.8

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