ASTROSAT CZTI

Data Quality Report

Orbit 47904

Creation date: 2024-08-07T00:30:42.481439
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/AS1A09_038T41_9000006376_47904cztM0_level2.fits modeM0/AS1A09_038T41_9000006376_47904cztM0_level2_quad_clean.evt
Size (bytes)277,842,24063,178,560
Size265.0 MB 60.3 MB
Events in quadrant A4,314,415400,392
Events in quadrant B1,939,784428,778
Events in quadrant C1,787,263419,945
Events in quadrant D1,934,120384,416

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157281
B085391
C081641
D086181

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A39632947.418622%
B3963802.018673%
C3963310.782236%
D3962521.312468%

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 4638 3964 76 76 1.64% 1.92%
B 4638 3964 11 11 0.24% 0.28%
C 4638 3964 1 1 0.02% 0.03%
D 4637 3963 17 17 0.37% 0.43%

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 2401144 25849.75 437 427 92.9
A 13 248 189059 2031.1 437 427 92.9
A 15 235 13198 137.51 437 427 92.9
B 0 200 123757 1384.98 443 428 89.0
B 0 198 18840 206.77 443 428 89.0
B 5 255 15208 165.98 443 428 89.0
C 12 2 44869 424.13 441 443 104.7
C 9 237 8055 72.67 441 443 104.7
C 14 254 7843 70.65 441 443 104.7
D 2 37 85438 766.98 441 427 110.8
D 2 165 44453 397.21 441 427 110.8
D 2 120 37468 334.19 441 427 110.8

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