ASTROSAT CZTI

Data Quality Report

Orbit 48478

Creation date: 2024-09-14T15:53:58.799974
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_081T01_9000006428_48478cztM0_level2.fits modeM0/AS1A13_081T01_9000006428_48478cztM0_level2_quad_clean.evt
Size (bytes)437,284,800100,523,520
Size417.0 MB 95.9 MB
Events in quadrant A6,451,341659,856
Events in quadrant B2,850,782693,693
Events in quadrant C2,672,995657,230
Events in quadrant D3,709,398582,615

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0242202
B0133611
C0132141
D0158641

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64612794.318217%
B64611562.414487%
C6462911.408233%
D64623415.277004%

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 7221 6461 2 2 0.03% 0.03%
B 7221 6461 5 5 0.07% 0.08%
C 7222 6462 0 0 0.00% 0.00%
D 7222 6462 212 212 2.94% 3.28%

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 3791930 26538.82 684 670 142.9
A 13 254 12611 83.59 684 670 142.9
A 10 255 10732 70.43 684 670 142.9
B 8 234 53103 386.56 690 669 135.6
B 12 16 38812 281.2 690 669 135.6
B 0 186 28788 207.3 690 669 135.6
C 1 3 15197 91.99 676 677 157.8
C 12 2 9234 54.21 676 677 157.8
C 12 250 6665 37.94 676 677 157.8
D 2 249 603981 3649.06 665 644 165.3
D 7 38 349712 2111.21 665 644 165.3
D 2 165 47015 280.46 665 644 165.3

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