ASTROSAT CZTI

Data Quality Report

Orbit 38128

Creation date: 2024-06-27T21:48:46.080761
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_001T12_9000005366_38128cztM0_level2.fits modeM0/AS1C07_001T12_9000005366_38128cztM0_level2_quad_clean.evt
Size (bytes)338,639,040100,728,000
Size323.0 MB 96.1 MB
Events in quadrant A3,467,865679,990
Events in quadrant B2,645,453705,682
Events in quadrant C2,989,449679,469
Events in quadrant D3,015,233610,453

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137403
B0112772
C0121822
D0125732

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5359400.746408%
B5359350.653107%
C5359230.429185%
D5359881.642097%

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 7393 5360 28 28 0.38% 0.52%
B 7393 5360 31 31 0.42% 0.58%
C 7393 5360 17 17 0.23% 0.32%
D 7392 5359 82 82 1.11% 1.53%

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 12 16 575506 4643.85 619 608 123.8
A 10 83 356949 2878.41 619 608 123.8
A 12 194 86480 693.65 619 608 123.8
B 5 172 82346 699.82 626 610 116.8
B 0 229 78405 666.08 626 610 116.8
B 4 171 14623 119.98 626 610 116.8
C 0 239 267049 1892.11 615 619 140.8
C 15 214 223401 1582.13 615 619 140.8
C 0 10 31789 221.36 615 619 140.8
D 13 249 156955 1072.54 603 586 145.8
D 7 55 135071 922.43 603 586 145.8
D 12 227 91180 621.39 603 586 145.8

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