ASTROSAT CZTI

Data Quality Report

Orbit 40825

Creation date: 2024-06-27T22:21:00.834675
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/AS1A12_104T02_9000005572_40825cztM0_level2.fits modeM0/AS1A12_104T02_9000005572_40825cztM0_level2_quad_clean.evt
Size (bytes)300,755,52084,323,520
Size286.8 MB 80.4 MB
Events in quadrant A2,870,982565,521
Events in quadrant B2,281,339585,855
Events in quadrant C2,500,940553,563
Events in quadrant D3,084,556493,678

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115713
B0103332
C0105832
D0128582

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5066320.631662%
B5066140.276352%
C5066310.611923%
D50662074.086064%

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 9222 5068 22 22 0.24% 0.43%
B 9222 5068 2 2 0.02% 0.04%
C 9222 5068 33 33 0.36% 0.65%
D 9222 5068 154 154 1.67% 3.04%

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 468002 4037.0 562 550 115.8
A 13 248 181345 1561.38 562 550 115.8
A 6 10 22824 192.36 562 550 115.8
B 0 190 36298 326.6 560 544 109.5
B 15 32 21546 191.85 560 544 109.5
B 12 111 13937 122.34 560 544 109.5
C 15 214 216884 1692.7 547 551 127.8
C 0 10 120916 941.8 547 551 127.8
C 14 254 20624 157.06 547 551 127.8
D 13 249 506857 3815.75 536 521 132.7
D 2 249 381148 2868.41 536 521 132.7
D 1 47 69292 518.26 536 521 132.7

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