ASTROSAT CZTI

Data Quality Report

Orbit 03858

Creation date: 2024-06-27T14:34:27.934479
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/AS1G05_189T01_9000000492_03858cztM0_level2.evt modeM0/AS1G05_189T01_9000000492_03858cztM0_level2_quad_clean.evt
Size (bytes)1,175,045,760140,935,680
Size1.1 GB 134.4 MB
Events in quadrant A6,597,074890,587
Events in quadrant B6,301,820884,911
Events in quadrant C15,107,385770,788
Events in quadrant D6,714,679835,463

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0285393
B0271572
C0534422
D0295322

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02600
B02600
C02600
D02600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A128091060.827543%
B12809800.624561%
C12809355727.769537%
D128093762.935436%

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 14134 12810 24 24 0.17% 0.19%
B 14134 12810 4 4 0.03% 0.03%
C 14134 12809 3417 3417 24.18% 26.68%
D 14134 12811 343 343 2.43% 2.68%

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 842314 2827.16 1449 1418 297.4
A 8 15 142117 473.04 1449 1418 297.4
A 0 50 17947 55.57 1449 1418 297.4
B 15 204 404971 1418.12 1469 1432 284.6
B 14 167 135641 471.64 1469 1432 284.6
B 4 81 36628 123.69 1469 1432 284.6
C 2 53 9848254 32695.55 1291 1295 301.2
C 9 247 95345 312.28 1291 1295 301.2
C 1 241 47210 152.45 1291 1295 301.2
D 8 112 1110596 2990.69 1385 1357 370.9
D 13 223 66531 175.72 1385 1357 370.9
D 2 206 64972 171.52 1385 1357 370.9

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
Veto Counter