ASTROSAT CZTI

Data Quality Report

Orbit 18849

Creation date: 2024-06-27T17:55:39.339352
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/AS1T03_094T01_9000002816_18849cztM0_level2.evt modeM0/AS1T03_094T01_9000002816_18849cztM0_level2_quad_clean.evt
Size (bytes)538,133,76081,218,880
Size513.2 MB 77.5 MB
Events in quadrant A3,819,306497,868
Events in quadrant B3,909,522503,350
Events in quadrant C3,612,865482,593
Events in quadrant D4,464,908471,834

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157622
B0159111
C0150861
D0179301

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72321281.769912%
B72331702.350339%
C72331622.239735%
D72333334.603899%

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 7692 7233 2 2 0.03% 0.03%
B 7693 7234 18 18 0.23% 0.25%
C 7693 7234 6 6 0.08% 0.08%
D 7693 7234 157 157 2.04% 2.17%

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 6 16 277105 1485.66 912 891 185.9
A 4 2 15685 79.57 912 891 185.9
A 13 254 11554 57.35 912 891 185.9
B 10 245 151898 854.37 906 884 176.8
B 0 229 87282 488.8 906 884 176.8
B 5 250 25385 138.62 906 884 176.8
C 14 238 134349 650.61 869 874 205.2
C 0 207 49304 236.07 869 874 205.2
C 3 233 34133 162.12 869 874 205.2
D 1 52 621523 2906.66 876 850 213.5
D 12 1 226254 1055.59 876 850 213.5
D 1 20 207776 969.05 876 850 213.5

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