ASTROSAT CZTI

Data Quality Report

Orbit 04659

Creation date: 2024-06-27T14:45:12.396854
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_218T03_9000000582_04659cztM0_level2.evt modeM0/AS1G05_218T03_9000000582_04659cztM0_level2_quad_clean.evt
Size (bytes)431,438,40087,163,200
Size411.5 MB 83.1 MB
Events in quadrant A3,241,838556,796
Events in quadrant B3,136,342573,367
Events in quadrant C2,846,772553,798
Events in quadrant D3,419,838523,038

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138133
B0135442
C0128392
D0146882

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6198550.887383%
B6198300.484027%
C6198170.274282%
D6198861.387544%

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 7503 6199 28 28 0.37% 0.45%
B 7503 6199 3 3 0.04% 0.05%
C 7503 6199 0 0 0.00% 0.00%
D 7503 6199 49 49 0.65% 0.79%

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 7 16 374272 2496.36 734 720 149.6
A 8 15 31609 206.42 734 720 149.6
A 0 50 13435 84.97 734 720 149.6
B 10 16 110728 775.22 752 733 141.9
B 15 204 65432 455.99 752 733 141.9
B 14 167 23970 163.77 752 733 141.9
C 13 61 5968 31.14 728 732 168.1
C 9 247 3608 17.1 728 732 168.1
C 7 247 3198 14.66 728 732 168.1
D 8 112 400009 2348.28 713 693 170.0
D 13 239 61995 360.5 713 693 170.0
D 2 136 56601 328.78 713 693 170.0

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