ASTROSAT CZTI

Data Quality Report

Orbit 08715

Creation date: 2024-06-27T15:36:14.371753
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_132T01_9000001212_08715cztM0_level2.evt modeM0/AS1A02_132T01_9000001212_08715cztM0_level2_quad_clean.evt
Size (bytes)418,446,72094,063,680
Size399.1 MB 89.7 MB
Events in quadrant A3,051,055593,612
Events in quadrant B3,085,621616,644
Events in quadrant C3,021,120611,283
Events in quadrant D3,078,787579,863

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133933
B0133592
C0132622
D0136462

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6418260.405111%
B6418320.498598%
C6418140.218136%
D6418210.327205%

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 7478 6419 4 4 0.05% 0.06%
B 7478 6419 1 1 0.01% 0.02%
C 7478 6419 1 1 0.01% 0.02%
D 7478 6419 13 13 0.17% 0.20%

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 13 251 42844 265.28 774 756 158.7
A 13 248 20992 127.55 774 756 158.7
A 15 174 12413 73.47 774 756 158.7
B 12 111 16135 101.69 786 767 151.1
B 11 111 12868 80.07 786 767 151.1
B 10 246 12489 77.57 786 767 151.1
C 14 234 15763 83.45 769 774 179.6
C 13 61 5611 26.93 769 774 179.6
C 12 4 3381 14.51 769 774 179.6
D 1 52 101880 550.5 755 737 183.7
D 2 152 36803 196.3 755 737 183.7
D 2 14 24131 127.33 755 737 183.7

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