ASTROSAT CZTI

Data Quality Report

Orbit 07487

Creation date: 2024-06-27T15:20:21.951094
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/AS1A02_165T03_9000001032_07487cztM0_level2.evt modeM0/AS1A02_165T03_9000001032_07487cztM0_level2_quad_clean.evt
Size (bytes)519,759,360103,829,760
Size495.7 MB 99.0 MB
Events in quadrant A3,608,990647,071
Events in quadrant B4,036,580663,560
Events in quadrant C3,583,420659,744
Events in quadrant D3,977,467627,188

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164203
B0175142
C0163982
D0178012

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7870630.800508%
B78702092.655654%
C7870560.711563%
D78701501.905972%

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 8745 7873 0 0 0.00% 0.00%
B 8745 7873 83 83 0.95% 1.05%
C 8745 7873 1 1 0.01% 0.01%
D 8745 7873 68 68 0.78% 0.86%

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 15 234 12335 59.87 929 904 190.9
A 15 239 11455 55.26 929 904 190.9
A 0 226 8587 40.24 929 904 190.9
B 0 85 289723 1594.65 937 909 181.1
B 0 214 67479 367.56 937 909 181.1
B 4 173 20717 109.36 937 909 181.1
C 13 61 6871 27.63 915 920 215.4
C 8 222 5383 20.72 915 920 215.4
C 10 22 5275 20.22 915 920 215.4
D 2 14 181835 808.46 903 874 223.8
D 1 52 151844 674.48 903 874 223.8
D 2 136 72516 320.07 903 874 223.8

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