ASTROSAT CZTI

Data Quality Report

Orbit 18062

Creation date: 2024-06-27T17:44:32.287589
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/AS1A06_003T04_9000002682_18062cztM0_level2.evt modeM0/AS1A06_003T04_9000002682_18062cztM0_level2_quad_clean.evt
Size (bytes)473,757,120103,821,120
Size451.8 MB 99.0 MB
Events in quadrant A3,566,175694,835
Events in quadrant B3,388,993702,289
Events in quadrant C3,262,439651,039
Events in quadrant D3,697,821651,862

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146902
B0141052
C0137012
D0150442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63661312.057807%
B63661001.570845%
C63651011.586803%
D63651171.838178%

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 7581 6366 15 15 0.20% 0.24%
B 7581 6366 3 3 0.04% 0.05%
C 7580 6366 1 1 0.01% 0.02%
D 7580 6365 44 44 0.58% 0.69%

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 15 174 145340 843.21 856 841 171.4
A 14 111 122761 711.45 856 841 171.4
A 4 2 8284 43.43 856 841 171.4
B 0 197 27367 165.88 846 826 160.0
B 12 111 18220 108.71 846 826 160.0
B 0 230 16094 95.42 846 826 160.0
C 14 238 127514 687.87 797 801 184.2
C 3 233 15306 78.74 797 801 184.2
C 13 61 5600 26.05 797 801 184.2
D 11 176 303676 1521.13 822 799 199.1
D 5 222 101938 507.95 822 799 199.1
D 7 238 60892 301.8 822 799 199.1

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