ASTROSAT CZTI

Data Quality Report

Orbit 12923

Creation date: 2024-06-27T16:33:59.624432
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/AS1A04_116T01_9000001896_12923cztM0_level2.evt modeM0/AS1A04_116T01_9000001896_12923cztM0_level2_quad_clean.evt
Size (bytes)493,398,72096,523,200
Size470.5 MB 92.1 MB
Events in quadrant A3,417,104631,455
Events in quadrant B4,024,951612,160
Events in quadrant C3,082,703639,115
Events in quadrant D3,991,353601,702

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141932
B0159941
C0132451
D0158811

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6281520.827894%
B62814727.514727%
C6281340.541315%
D62811662.642891%

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 7502 6284 1 1 0.01% 0.02%
B 7502 6283 195 195 2.60% 3.10%
C 7502 6284 0 0 0.00% 0.00%
D 7502 6284 112 112 1.49% 1.78%

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 1 162 93800 588.5 793 778 158.1
A 15 239 61523 384.3 793 778 158.1
A 12 189 46904 291.81 793 778 158.1
B 4 239 826102 5906.75 760 742 139.7
B 3 64 150204 1069.64 760 742 139.7
B 0 197 36840 258.34 760 742 139.7
C 4 112 28671 157.68 781 788 176.8
C 13 61 5871 28.74 781 788 176.8
C 8 222 4586 21.48 781 788 176.8
D 1 52 775677 4256.97 767 746 182.0
D 8 195 254358 1393.18 767 746 182.0
D 2 234 26170 139.66 767 746 182.0

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