ASTROSAT CZTI

Data Quality Report

Orbit 09774

Creation date: 2024-06-27T15:50:30.145123
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/AS1A03_080T01_9000001392_09774cztM0_level2.evt modeM0/AS1A03_080T01_9000001392_09774cztM0_level2_quad_clean.evt
Size (bytes)500,927,04090,576,000
Size477.7 MB 86.4 MB
Events in quadrant A3,502,836554,205
Events in quadrant B3,875,326558,693
Events in quadrant C3,454,008562,912
Events in quadrant D3,823,986540,497

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01570239
B01639611
C01557916
D01647823

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01542

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75611992.631927%
B75732613.446455%
C75701301.717305%
D75671712.259812%

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 7703 7577 0 0 0.00% 0.00%
B 7703 7579 25 25 0.32% 0.33%
C 7703 7577 0 0 0.00% 0.00%
D 7703 7578 18 18 0.23% 0.24%

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 15 239 44308 236.21 897 875 183.9
A 0 226 8343 40.61 897 875 183.9
A 12 194 7538 36.24 897 875 183.9
B 4 239 170490 974.83 904 880 174.0
B 0 214 86208 490.42 904 880 174.0
B 0 219 39601 222.55 904 880 174.0
C 13 61 6598 28.01 882 884 204.0
C 8 128 4860 19.49 882 884 204.0
C 8 222 4070 15.62 882 884 204.0
D 8 195 166118 788.1 874 852 209.7
D 1 52 107581 508.96 874 852 209.7
D 2 152 65073 306.25 874 852 209.7

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