ASTROSAT CZTI

Data Quality Report

Orbit 47646

Creation date: 2024-07-20T12:46:13.515287
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_071T01_9000006340_47646cztM0_level2.fits modeM0/AS1A13_071T01_9000006340_47646cztM0_level2_quad_clean.evt
Size (bytes)427,985,28097,781,760
Size408.2 MB 93.3 MB
Events in quadrant A6,458,116637,579
Events in quadrant B2,938,967671,789
Events in quadrant C2,880,826636,566
Events in quadrant D3,095,782592,556

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0238661
B0129021
C0129831
D0134501

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60402964.900662%
B6041751.241516%
C60411181.953319%
D6041681.125641%

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 7030 6041 97 97 1.38% 1.61%
B 7031 6042 6 6 0.09% 0.10%
C 7031 6042 57 57 0.81% 0.94%
D 7031 6042 20 20 0.28% 0.33%

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 3301606 23479.16 673 659 140.6
A 13 248 285432 2025.55 673 659 140.6
A 9 191 266241 1889.05 673 659 140.6
B 5 172 119761 893.98 673 652 133.2
B 5 29 81632 607.8 673 652 133.2
B 5 255 46938 347.4 673 652 133.2
C 14 254 262510 1660.15 669 673 157.7
C 12 2 5312 29.41 669 673 157.7
C 13 61 4384 23.53 669 673 157.7
D 6 239 248588 1481.43 673 653 167.4
D 12 218 107783 640.11 673 653 167.4
D 2 249 42289 248.78 673 653 167.4

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