ASTROSAT CZTI

Data Quality Report

Orbit 12607

Creation date: 2024-06-27T16:29:55.116769
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/AS1G08_071T01_9000001874_12607cztM0_level2.evt modeM0/AS1G08_071T01_9000001874_12607cztM0_level2_quad_clean.evt
Size (bytes)463,910,400104,806,080
Size442.4 MB 100.0 MB
Events in quadrant A3,002,713687,547
Events in quadrant B3,957,893693,468
Events in quadrant C3,022,282709,836
Events in quadrant D3,654,418659,545

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129433
B0157532
C0129522
D0149862

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6065420.692498%
B60653646.001649%
C6065310.511129%
D60651462.407255%

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 7426 6067 1 1 0.01% 0.02%
B 7426 6066 274 274 3.69% 4.52%
C 7426 6067 2 2 0.03% 0.03%
D 7426 6067 90 90 1.21% 1.48%

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 3 1 24770 154.61 765 751 155.4
A 9 143 20142 124.82 765 751 155.4
A 12 189 12893 78.16 765 751 155.4
B 4 239 858159 6131.7 749 731 139.8
B 0 85 40538 284.67 749 731 139.8
B 3 64 35461 248.36 749 731 139.8
C 14 234 34607 194.62 763 768 173.9
C 15 208 10935 58.47 763 768 173.9
C 13 61 5644 28.04 763 768 173.9
D 1 52 582722 3284.16 741 722 177.2
D 10 199 155981 876.11 741 722 177.2
D 13 249 28987 159.5 741 722 177.2

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