ASTROSAT CZTI

Data Quality Report

Orbit 47624

Creation date: 2024-07-19T01:55:02.520523
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/AS1A13_071T01_9000006340_47624cztM0_level2.fits modeM0/AS1A13_071T01_9000006340_47624cztM0_level2_quad_clean.evt
Size (bytes)603,846,720111,588,480
Size575.9 MB 106.4 MB
Events in quadrant A7,991,936737,303
Events in quadrant B6,759,962655,112
Events in quadrant C3,218,752768,604
Events in quadrant D3,811,908706,384

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0289871
B0250501
C0151761
D0166991

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73475908.030489%
B7347138718.878454%
C7347200.272220%
D73471071.456377%

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 7362 7348 174 174 2.36% 2.37%
B 7362 7348 869 869 11.80% 11.83%
C 7362 7348 1 1 0.01% 0.01%
D 7362 7348 63 63 0.86% 0.86%

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 10 83 3860649 22368.5 820 803 172.6
A 13 248 561627 3250.08 820 803 172.6
A 9 191 326242 1885.98 820 803 172.6
B 5 172 1924401 12819.9 756 733 150.1
B 5 32 1384343 9220.79 756 733 150.1
B 0 200 200318 1330.09 756 733 150.1
C 3 233 46793 239.64 811 811 191.9
C 14 254 5579 24.85 811 811 191.9
C 13 61 5468 24.27 811 811 191.9
D 2 120 237414 1148.25 814 785 206.1
D 2 249 125587 605.6 814 785 206.1
D 2 165 90691 436.27 814 785 206.1

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