ASTROSAT CZTI

Data Quality Report

Orbit 09855

Creation date: 2024-06-27T15:51:28.828931
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/AS1A03_117T06_9000001404_09855cztM0_level2.evt modeM0/AS1A03_117T06_9000001404_09855cztM0_level2_quad_clean.evt
Size (bytes)291,461,76044,807,040
Size278.0 MB 42.7 MB
Events in quadrant A1,994,119267,729
Events in quadrant B2,038,395279,738
Events in quadrant C2,434,428267,385
Events in quadrant D2,080,537253,052

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0858827
B0867728
C0998444
D0908925

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4092571.392962%
B4092571.392962%
C40881293.155577%
D4093641.563645%

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 5345 4104 0 0 0.00% 0.00%
B 5345 4106 1 1 0.02% 0.02%
C 5345 4106 62 62 1.16% 1.51%
D 5345 4106 22 22 0.41% 0.54%

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 4 2 6521 57.16 513 503 105.3
A 1 162 5465 47.13 513 503 105.3
A 0 226 4703 39.9 513 503 105.3
B 4 81 21142 207.48 518 506 99.5
B 12 111 11513 110.67 518 506 99.5
B 11 111 9435 89.77 518 506 99.5
C 4 254 487661 4217.41 496 500 115.5
C 14 234 5290 41.47 496 500 115.5
C 13 61 3761 28.23 496 500 115.5
D 12 233 103488 801.77 492 481 128.5
D 1 52 73964 571.96 492 481 128.5
D 2 234 12798 95.87 492 481 128.5

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