ASTROSAT CZTI

Data Quality Report

Orbit 07930

Creation date: 2024-06-27T15:25:38.293333
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/AS1A02_027T01_9000001084_07930cztM0_level2.evt modeM0/AS1A02_027T01_9000001084_07930cztM0_level2_quad_clean.evt
Size (bytes)456,361,92095,304,960
Size435.2 MB 90.9 MB
Events in quadrant A3,346,562599,739
Events in quadrant B3,457,801624,164
Events in quadrant C3,068,649634,683
Events in quadrant D3,525,448593,494

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138343
B0144902
C0131652
D0146322

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6222400.642880%
B62221442.314368%
C6222320.514304%
D6222891.430408%

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 7497 6223 8 8 0.11% 0.13%
B 7497 6223 52 52 0.69% 0.84%
C 7497 6223 0 0 0.00% 0.00%
D 7497 6223 49 49 0.65% 0.79%

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 15 234 326591 2070.86 778 764 157.3
A 15 223 12790 76.43 778 764 157.3
A 0 226 7626 43.61 778 764 157.3
B 4 239 235268 1586.85 789 770 147.8
B 0 219 55427 369.87 789 770 147.8
B 5 255 23930 156.72 789 770 147.8
C 14 67 17858 95.25 781 788 179.2
C 13 61 5922 28.65 781 788 179.2
C 1 16 5458 26.06 781 788 179.2
D 5 233 117624 620.61 767 745 188.3
D 12 233 106309 560.53 767 745 188.3
D 1 52 100840 531.49 767 745 188.3

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