ASTROSAT CZTI

Data Quality Report

Orbit 33800

Creation date: 2024-06-27T20:52:55.408808
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/AS1T04_091T01_9000004822_33800cztM0_level2.evt modeM0/AS1T04_091T01_9000004822_33800cztM0_level2_quad_clean.evt
Size (bytes)565,787,52055,126,080
Size539.6 MB 52.6 MB
Events in quadrant A4,017,754324,762
Events in quadrant B3,782,958328,032
Events in quadrant C3,506,350337,422
Events in quadrant D5,477,628315,430

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152503
B0146952
C0139562
D0197812

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51885149.907479%
B51882775.339244%
C51881292.486507%
D51883957.613724%

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 7309 5189 315 315 4.31% 6.07%
B 7309 5189 214 214 2.93% 4.12%
C 7309 5189 114 114 1.56% 2.20%
D 7309 5189 341 341 4.67% 6.57%

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 15 237 1438304 10947.62 661 649 131.3
A 13 6 14789 107.67 661 649 131.3
A 10 83 10077 71.79 661 649 131.3
B 5 172 806012 6460.2 670 655 124.7
B 0 219 87428 696.05 670 655 124.7
B 0 190 70947 563.85 670 655 124.7
C 15 214 223439 1471.61 667 675 151.4
C 3 233 203313 1338.66 667 675 151.4
C 9 187 200692 1321.34 667 675 151.4
D 8 195 1399650 8724.91 660 644 160.3
D 2 250 523163 3258.69 660 644 160.3
D 12 235 394886 2458.69 660 644 160.3

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