ASTROSAT CZTI

Data Quality Report

Orbit 34841

Creation date: 2022-03-09T05:40:20.681769
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/AS1C07_005T01_9000004992_34841cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34841cztM0_level2_quad_clean.evt
Size (bytes)738,437,76081,129,600
Size704.2 MB 77.4 MB
Events in quadrant A8,945,733456,867
Events in quadrant B6,684,531534,476
Events in quadrant C3,110,810564,975
Events in quadrant D3,283,095546,215

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300713
B0232622
C0120862
D0129722

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5034252050.059595%
B5034161332.042114%
C50341523.019468%
D5034831.648788%

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 7037 5034 2220 2220 31.55% 44.10%
B 7037 5035 1370 1370 19.47% 27.21%
C 7037 5035 114 114 1.62% 2.26%
D 7037 5035 72 72 1.02% 1.43%

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 15 169 6865874 65970.89 523 515 104.1
A 10 83 42380 402.29 523 515 104.1
A 13 6 11002 100.77 523 515 104.1
B 5 31 1215949 11730.59 560 548 103.6
B 5 15 1212091 11693.35 560 548 103.6
B 5 14 1202777 11603.45 560 548 103.6
C 0 10 346416 2525.52 600 605 136.9
C 15 214 228594 1665.04 600 605 136.9
C 0 207 141504 1029.01 600 605 136.9
D 8 195 487659 3204.16 599 586 152.0
D 12 233 132511 867.85 599 586 152.0
D 13 249 76628 500.23 599 586 152.0

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