ASTROSAT CZTI

Data Quality Report

Orbit 48144

Creation date: 2024-08-23T15:14:27.305203
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/AS1C09_009T01_9000006406_48144cztM0_level2.fits modeM0/AS1C09_009T01_9000006406_48144cztM0_level2_quad_clean.evt
Size (bytes)455,313,60091,987,200
Size434.2 MB 87.7 MB
Events in quadrant A7,765,883788,999
Events in quadrant B1,166,99447,966
Events in quadrant C3,159,914777,946
Events in quadrant D4,241,913707,227

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0276344
B071642
C0138372
D0170782

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65925888.919903%
B65926592100.000000%
C6592891.350121%
D65921462.214806%

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 7582 6593 150 150 1.98% 2.28%
B 7581 6569 0 0 0.00% 0.00%
C 7582 6593 18 18 0.24% 0.27%
D 7582 6593 76 76 1.00% 1.15%

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 4559428 27855.54 775 760 163.7
A 13 248 162837 990.36 775 760 163.7
A 3 14 16632 96.99 775 760 163.7
B 2 177 908445 74742.16 49 48 12.2
B 0 200 19665 1614.07 49 48 12.2
B 4 171 15367 1260.43 49 48 12.2
C 12 2 52580 278.82 782 788 185.8
C 12 250 35354 186.08 782 788 185.8
C 0 207 16056 82.19 782 788 185.8
D 12 2 421026 2131.28 778 756 197.2
D 2 165 404763 2048.81 778 756 197.2
D 2 37 204321 1032.32 778 756 197.2

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