ASTROSAT CZTI

Data Quality Report

Orbit 43155

Creation date: 2024-06-27T22:48:43.161432
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/AS1C07_001T10_9000005856_43155cztM0_level2.fits modeM0/AS1C07_001T10_9000005856_43155cztM0_level2_quad_clean.evt
Size (bytes)312,906,24086,713,920
Size298.4 MB 82.7 MB
Events in quadrant A3,420,483587,265
Events in quadrant B2,264,214611,876
Events in quadrant C2,625,737560,267
Events in quadrant D2,889,444521,950

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131623
B0100502
C0107802
D0120412

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49101613.279022%
B491190.183262%
C491190.183262%
D4911971.975158%

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 7003 4911 123 123 1.76% 2.50%
B 7004 4912 4 4 0.06% 0.08%
C 7004 4912 7 7 0.10% 0.14%
D 7004 4912 66 66 0.94% 1.34%

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 10 83 553215 4953.49 548 538 111.6
A 15 237 464183 4155.52 548 538 111.6
A 13 248 151936 1356.94 548 538 111.6
B 5 255 40287 382.85 545 531 103.8
B 15 85 25430 239.77 545 531 103.8
B 0 189 16410 152.91 545 531 103.8
C 0 239 270932 2216.93 524 526 122.0
C 15 214 222653 1821.11 524 526 122.0
C 14 254 88194 718.75 524 526 122.0
D 1 52 397462 3051.68 532 517 130.1
D 13 249 270749 2077.52 532 517 130.1
D 12 0 86484 660.91 532 517 130.1

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