ASTROSAT CZTI

Data Quality Report

Orbit 12476

Creation date: 2024-06-27T16:27:55.980473
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/AS1A04_174T01_9000001850_12476cztM0_level2.evt modeM0/AS1A04_174T01_9000001850_12476cztM0_level2_quad_clean.evt
Size (bytes)760,026,24088,761,600
Size724.8 MB 84.6 MB
Events in quadrant A11,950,088439,213
Events in quadrant B4,403,220622,918
Events in quadrant C3,003,823623,771
Events in quadrant D3,250,680577,808

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0396702
B0170821
C0126161
D0135581

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6062391264.533157%
B60623595.922138%
C6062140.230947%
D6062530.874299%

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 7413 6063 3142 3142 42.38% 51.82%
B 7413 6064 246 246 3.32% 4.06%
C 7413 6064 2 2 0.03% 0.03%
D 7413 6064 68 68 0.92% 1.12%

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 13 251 8895201 73125.2 601 592 121.6
A 0 23 436403 3582.93 601 592 121.6
A 12 189 95713 782.02 601 592 121.6
B 4 239 815311 5618.89 778 761 145.0
B 0 85 352134 2423.83 778 761 145.0
B 0 197 88012 601.87 778 761 145.0
C 15 208 12680 66.9 765 773 178.0
C 14 234 6422 31.74 765 773 178.0
C 13 61 5659 27.45 765 773 178.0
D 1 52 315890 1735.66 749 727 181.6
D 13 104 38736 209.32 749 727 181.6
D 7 71 34860 187.97 749 727 181.6

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