ASTROSAT CZTI

Data Quality Report

Orbit 46275

Creation date: 2024-06-27T23:21:09.732483
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_072T01_9000006192_46275cztM0_level2.fits modeM0/AS1A13_072T01_9000006192_46275cztM0_level2_quad_clean.evt
Size (bytes)531,622,080121,818,240
Size507.0 MB 116.2 MB
Events in quadrant A6,539,882786,182
Events in quadrant B5,315,240817,694
Events in quadrant C3,346,795818,817
Events in quadrant D3,895,844744,206

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244474
B0209222
C0155962
D0170432

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74952693.589059%
B74952663.549033%
C7495330.440294%
D7495851.134089%

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 7825 7496 4 4 0.05% 0.05%
B 7825 7496 32 32 0.41% 0.43%
C 7825 7496 5 5 0.06% 0.07%
D 7825 7496 72 72 0.92% 0.96%

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 3294728 19246.59 824 807 171.1
A 9 191 30190 171.69 824 807 171.1
A 3 7 17709 98.76 824 807 171.1
B 3 112 1673523 10232.57 826 799 163.5
B 5 172 179144 1090.99 826 799 163.5
B 0 190 80436 487.16 826 799 163.5
C 12 2 77724 391.27 835 839 196.5
C 12 250 12423 58.95 835 839 196.5
C 13 61 5504 23.74 835 839 196.5
D 1 52 277339 1331.21 829 800 207.7
D 13 249 227483 1091.21 829 800 207.7
D 2 249 48216 228.25 829 800 207.7

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