ASTROSAT CZTI

Data Quality Report

Orbit 36898

Creation date: 2024-06-27T21:32:58.809665
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_010T01_9000005246_36898cztM0_level2.evt modeM0/AS1C07_010T01_9000005246_36898cztM0_level2_quad_clean.evt
Size (bytes)363,214,08065,145,600
Size346.4 MB 62.1 MB
Events in quadrant A3,001,814535,955
Events in quadrant B835,4967,897
Events in quadrant C2,965,674543,546
Events in quadrant D3,814,902496,182

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122793
B055882
C0118492
D0148852

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5532550.994215%
B55325532100.000000%
C5532300.542299%
D55323135.657990%

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 9629 5534 39 39 0.41% 0.70%
B 9628 5531 0 0 0.00% 0.00%
C 9629 5534 20 20 0.21% 0.36%
D 9629 5534 304 304 3.16% 5.49%

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 10 83 228119 1708.91 667 654 133.1
A 15 174 137459 1027.79 667 654 133.1
A 9 143 50216 372.35 667 654 133.1
B 12 243 768715 194854.19 11 11 3.9
B 12 144 14346 3633.69 11 11 3.9
B 5 255 1116 280.1 11 11 3.9
C 15 214 239852 1554.77 666 672 153.8
C 0 10 130281 842.51 666 672 153.8
C 13 61 4559 25.27 666 672 153.8
D 10 253 662453 4231.83 648 631 156.4
D 13 171 228872 1459.42 648 631 156.4
D 2 250 103821 659.82 648 631 156.4

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