ASTROSAT CZTI

Data Quality Report

Orbit 08250

Creation date: 2024-06-27T15:29:58.737691
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/AS1G07_086T01_9000001142_08250cztM0_level2.evt modeM0/AS1G07_086T01_9000001142_08250cztM0_level2_quad_clean.evt
Size (bytes)446,849,28090,417,600
Size426.1 MB 86.2 MB
Events in quadrant A3,214,102578,666
Events in quadrant B3,399,940587,634
Events in quadrant C3,134,760574,002
Events in quadrant D3,351,131553,711

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134633
B0138802
C0134344
D0141842

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63621512.373467%
B63621462.294876%
C63611342.106587%
D63621662.609242%

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 7577 6362 0 0 0.00% 0.00%
B 7577 6362 1 1 0.01% 0.02%
C 7577 6362 2 2 0.03% 0.03%
D 7577 6362 25 25 0.33% 0.39%

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 8 15 16498 93.62 830 814 167.5
A 0 226 7994 42.86 830 814 167.5
A 12 194 7583 40.41 830 814 167.5
B 0 214 81415 520.77 830 811 154.8
B 11 51 69660 444.82 830 811 154.8
B 10 16 24411 152.48 830 811 154.8
C 5 128 9712 48.49 801 805 183.7
C 13 61 6167 29.19 801 805 183.7
C 12 4 1998 6.49 801 805 183.7
D 1 52 129569 616.05 800 780 209.1
D 13 105 96466 457.7 800 780 209.1
D 8 230 58651 276.82 800 780 209.1

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