ASTROSAT CZTI

Data Quality Report

Orbit 20206

Creation date: 2024-06-27T18:12:26.123421
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/AS1A06_005T02_9000002996_20206cztM0_level2.evt modeM0/AS1A06_005T02_9000002996_20206cztM0_level2_quad_clean.evt
Size (bytes)461,246,40068,400,000
Size439.9 MB 65.2 MB
Events in quadrant A3,282,484418,873
Events in quadrant B3,504,491425,298
Events in quadrant C3,352,933401,772
Events in quadrant D3,410,379394,619

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132183
B0141002
C0135802
D0137512

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6163400.649035%
B6163580.941100%
C6163851.379198%
D6163721.168262%

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 7518 6164 0 0 0.00% 0.00%
B 7518 6164 1 1 0.01% 0.02%
C 7518 6164 0 0 0.00% 0.00%
D 7518 6164 14 14 0.19% 0.23%

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 14 238 7980 42.25 849 837 169.1
A 0 226 7292 38.18 849 837 169.1
A 3 137 6348 32.6 849 837 169.1
B 0 198 84712 533.99 853 837 157.1
B 7 220 44543 278.26 853 837 157.1
B 12 111 17982 109.15 853 837 157.1
C 14 238 131946 700.49 822 831 187.2
C 3 233 6207 28.72 822 831 187.2
C 13 61 5843 26.78 822 831 187.2
D 11 176 94113 468.7 830 808 199.1
D 1 52 74367 369.51 830 808 199.1
D 5 222 43764 215.78 830 808 199.1

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