ASTROSAT CZTI

Data Quality Report

Orbit 40773

Creation date: 2024-06-27T22:20:16.869684
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_9000005566_40773cztM0_level2.fits modeM0/AS1C07_001T10_9000005566_40773cztM0_level2_quad_clean.evt
Size (bytes)1,104,056,640237,625,920
Size1.0 GB 226.6 MB
Events in quadrant A8,328,1861,664,603
Events in quadrant B8,818,0041,668,161
Events in quadrant C11,081,7341,553,731
Events in quadrant D11,436,0671,235,311

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340994
B0367203
C0429443
D0448083

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15537790.508464%
B155375733.687971%
C155378845.689644%
D15537300419.334492%

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 19746 15540 53 53 0.27% 0.34%
B 19746 15540 459 459 2.32% 2.95%
C 19745 15539 846 846 4.28% 5.44%
D 19745 15539 800 800 4.05% 5.15%

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 1305993 3789.2 1691 1654 344.2
A 13 248 252556 728.89 1691 1654 344.2
A 12 189 150371 432.03 1691 1654 344.2
B 7 202 983542 3087.34 1666 1619 318.0
B 5 255 386356 1209.68 1666 1619 318.0
B 15 85 376844 1179.77 1666 1619 318.0
C 9 187 3898379 10317.54 1628 1640 377.7
C 15 214 647641 1710.44 1628 1640 377.7
C 14 254 75543 195.68 1628 1640 377.7
D 12 227 2834558 7702.25 1496 1453 367.8
D 2 249 776491 2107.07 1496 1453 367.8
D 12 191 540098 1464.39 1496 1453 367.8

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