ASTROSAT CZTI

Data Quality Report

Orbit 38474

Creation date: 2024-06-27T21:53:14.451493
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/AS1A12_018T01_9000005386_38474cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38474cztM0_level2_quad_clean.evt
Size (bytes)349,761,60092,790,720
Size333.6 MB 88.5 MB
Events in quadrant A2,809,929651,272
Events in quadrant B3,753,254619,807
Events in quadrant C2,606,486614,735
Events in quadrant D3,365,135553,968

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115233
B0146192
C0109404
D0135506

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5292150.283447%
B52924358.219955%
C529170.132300%
D52912124.006804%

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 7145 5293 3 3 0.04% 0.06%
B 7145 5293 342 342 4.79% 6.46%
C 7145 5293 4 4 0.06% 0.08%
D 7145 5293 188 188 2.63% 3.55%

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 389352 3117.25 615 603 124.7
A 9 143 15561 119.94 615 603 124.7
A 13 6 10499 79.35 615 603 124.7
B 8 3 880675 8010.97 582 566 109.9
B 4 232 516166 4693.12 582 566 109.9
B 4 171 19605 173.29 582 566 109.9
C 15 214 223573 1653.94 584 588 134.8
C 14 254 80551 593.11 584 588 134.8
C 0 10 15015 107.01 584 588 134.8
D 12 233 263378 1870.92 581 564 140.5
D 13 249 237000 1683.14 581 564 140.5
D 7 223 211774 1503.56 581 564 140.5

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