ASTROSAT CZTI

Data Quality Report

Orbit 47914

Creation date: 2024-08-07T15:34:32.758388
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_074T02_9000006378_47914cztM0_level2.fits modeM0/AS1A13_074T02_9000006378_47914cztM0_level2_quad_clean.evt
Size (bytes)507,741,120118,716,480
Size484.2 MB 113.2 MB
Events in quadrant A7,741,906754,227
Events in quadrant B3,331,089807,935
Events in quadrant C3,377,277789,564
Events in quadrant D3,757,872716,876

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0281120
B0155700
C0157950
D0169050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75604495.939153%
B7561560.740643%
C7561260.343870%
D75611051.388705%

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 7560 7560 257 257 3.40% 3.40%
B 7561 7561 2 2 0.03% 0.03%
C 7561 7561 21 21 0.28% 0.28%
D 7561 7561 75 75 0.99% 0.99%

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 3754295 22292.99 805 787 168.4
A 13 248 812331 4819.95 805 787 168.4
A 0 31 68056 399.53 805 787 168.4
B 0 200 55709 338.35 816 789 162.3
B 12 111 20830 123.47 816 789 162.3
B 11 111 19687 116.43 816 789 162.3
C 14 254 147564 768.32 817 820 191.0
C 12 2 30536 155.59 817 820 191.0
C 0 207 8789 41.72 817 820 191.0
D 2 249 456792 2248.42 815 789 202.8
D 14 34 45481 220.36 815 789 202.8
D 2 37 40388 195.25 815 789 202.8

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