ASTROSAT CZTI

Data Quality Report

Orbit 09166

Creation date: 2024-06-27T15:42:12.830707
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/AS1C02_027T01_9000001280_09166cztM0_level2.evt modeM0/AS1C02_027T01_9000001280_09166cztM0_level2_quad_clean.evt
Size (bytes)520,427,520130,095,360
Size496.3 MB 124.1 MB
Events in quadrant A3,766,220858,167
Events in quadrant B3,917,423867,459
Events in quadrant C3,239,416873,460
Events in quadrant D4,343,765834,408

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157643
B0164392
C0149802
D0179652

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72802713.722527%
B72803264.478022%
C72802022.774725%
D72803594.931319%

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 7335 7280 6 6 0.08% 0.08%
B 7335 7280 28 28 0.38% 0.38%
C 7335 7280 0 0 0.00% 0.00%
D 7335 7280 155 155 2.11% 2.13%

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 8 5 376828 2199.35 836 815 171.0
A 1 162 59475 343.11 836 815 171.0
A 5 16 50420 290.15 836 815 171.0
B 8 234 408079 2567.24 838 816 158.6
B 10 16 126582 792.79 838 816 158.6
B 0 219 75397 470.13 838 816 158.6
C 8 128 12198 60.02 823 823 189.5
C 8 112 6418 29.52 823 823 189.5
C 13 61 6204 28.39 823 823 189.5
D 12 233 647533 3087.6 814 791 209.5
D 13 104 204329 971.71 814 791 209.5
D 13 169 152995 726.63 814 791 209.5

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