ASTROSAT CZTI

Data Quality Report

Orbit 11135

Creation date: 2024-06-27T16:08:45.954446
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_071T02_9000001620_11135cztM0_level2.evt modeM0/AS1G08_071T02_9000001620_11135cztM0_level2_quad_clean.evt
Size (bytes)759,438,72080,608,320
Size724.3 MB 76.9 MB
Events in quadrant A6,823,021469,207
Events in quadrant B5,679,731468,363
Events in quadrant C3,951,821484,060
Events in quadrant D5,994,151453,397

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255852
B0221191
C0173061
D0232681

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8139121314.903551%
B813986610.640128%
C81393073.771962%
D813985310.480403%

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 8479 8141 573 573 6.76% 7.04%
B 8479 8141 237 237 2.80% 2.91%
C 8479 8141 18 18 0.21% 0.22%
D 8479 8141 405 405 4.78% 4.97%

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 8 5 2040039 10288.39 960 936 198.2
A 14 238 839357 4230.29 960 936 198.2
A 14 63 141678 710.12 960 936 198.2
B 10 16 1009527 5206.31 997 971 193.7
B 4 239 540544 2785.36 997 971 193.7
B 15 204 146733 752.44 997 971 193.7
C 9 54 38438 161.65 993 994 231.6
C 14 234 35837 150.42 993 994 231.6
C 13 61 7506 28.11 993 994 231.6
D 10 253 1290678 5531.92 958 929 233.1
D 1 52 525514 2250.02 958 929 233.1
D 13 152 142493 607.19 958 929 233.1

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