ASTROSAT CZTI

Data Quality Report

Orbit 30827

Creation date: 2024-06-27T20:20:04.929967
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/AS1A10_071T38_9000004454_30827cztM0_level2.evt modeM0/AS1A10_071T38_9000004454_30827cztM0_level2_quad_clean.evt
Size (bytes)652,553,28090,889,920
Size622.3 MB 86.7 MB
Events in quadrant A3,146,271604,774
Events in quadrant B5,238,617601,161
Events in quadrant C3,974,320564,340
Events in quadrant D6,954,717518,892

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136512
B0203392
C0162412
D0254602

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6642320.481783%
B6642871.309846%
C66424717.091238%
D664267310.132490%

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 7662 6642 0 0 0.00% 0.00%
B 7662 6642 15 15 0.20% 0.23%
C 7662 6642 42 42 0.55% 0.63%
D 7661 6641 660 660 8.62% 9.94%

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 13 254 12146 68.97 815 800 164.5
A 3 137 8362 45.97 815 800 164.5
A 0 226 6922 37.22 815 800 164.5
B 6 159 1885713 12232.35 808 788 154.1
B 5 172 59099 378.41 808 788 154.1
B 5 255 41741 265.77 808 788 154.1
C 3 233 363256 2021.78 763 771 179.3
C 14 238 235906 1311.48 763 771 179.3
C 0 10 190755 1059.65 763 771 179.3
D 8 195 2229523 12444.95 752 733 179.1
D 12 218 1225636 6839.52 752 733 179.1
D 12 2 305252 1700.35 752 733 179.1

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