ASTROSAT CZTI

Data Quality Report

Orbit 46926

Creation date: 2024-06-27T23:29:31.689955
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_074T06_9000006284_46926cztM0_level2.fits modeM0/AS1A13_074T06_9000006284_46926cztM0_level2_quad_clean.evt
Size (bytes)1,490,973,120255,902,400
Size1.4 GB 244.0 MB
Events in quadrant A15,946,8351,748,160
Events in quadrant B18,769,6061,595,621
Events in quadrant C7,656,7161,725,762
Events in quadrant D11,575,1581,565,898

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05821610
B0671593
C0347863
D0456664

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03280
B03280
C03280
D03280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A161266393.962545%
B16130258216.007440%
C161302391.481711%
D161297084.389609%

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 19484 16128 117 117 0.60% 0.73%
B 19485 16130 2003 2003 10.28% 12.42%
C 19485 16132 152 152 0.78% 0.94%
D 19484 16130 609 609 3.13% 3.78%

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 8677151 23022.17 1829 1792 376.8
A 15 254 64442 166.26 1829 1792 376.8
A 7 3 43831 111.56 1829 1792 376.8
B 3 112 10926695 31731.17 1762 1710 344.3
B 0 198 177250 509.85 1762 1710 344.3
B 4 171 166453 478.49 1762 1710 344.3
C 14 254 534287 1273.79 1780 1794 418.0
C 12 2 93590 219.59 1780 1794 418.0
C 0 207 28453 63.77 1780 1794 418.0
D 1 52 1619210 3692.96 1763 1713 438.0
D 12 233 709659 1616.34 1763 1713 438.0
D 12 0 665758 1516.1 1763 1713 438.0

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