ASTROSAT CZTI

Data Quality Report

Orbit 46338

Creation date: 2024-06-27T23:21:55.258775
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/AS1A13_070T05_9000006198_46338cztM0_level2.fits modeM0/AS1A13_070T05_9000006198_46338cztM0_level2_quad_clean.evt
Size (bytes)1,927,745,280252,195,840
Size1.8 GB 240.5 MB
Events in quadrant A34,738,613962,344
Events in quadrant B13,903,2571,890,148
Events in quadrant C8,402,7231,873,688
Events in quadrant D12,889,0781,635,887

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03760
B03760
C03760
D03760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01159713
B0542133
C0386923
D0514343

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18459992553.767810%
B184608354.523294%
C184601820.985915%
D1846011676.321777%

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 19854 18461 7758 7758 39.08% 42.02%
B 19855 18463 235 235 1.18% 1.27%
C 19855 18463 48 48 0.24% 0.26%
D 19855 18462 840 840 4.23% 4.55%

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 15 223 21790012 67052.22 1570 1537 324.9
A 10 83 6591999 20281.6 1570 1537 324.9
A 13 248 109422 332.01 1570 1537 324.9
B 3 112 4968582 12540.01 2024 1960 396.1
B 5 172 615970 1550.29 2024 1960 396.1
B 0 155 58988 143.99 2024 1960 396.1
C 12 2 373168 780.2 2026 2035 475.7
C 0 207 52824 106.77 2026 2035 475.7
C 3 233 47275 95.1 2026 2035 475.7
D 13 249 1893502 3756.7 1982 1919 503.5
D 12 1 1501052 2977.29 1982 1919 503.5
D 5 235 598489 1184.79 1982 1919 503.5

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