ASTROSAT CZTI

Data Quality Report

Orbit 27760

Creation date: 2024-06-27T19:43:59.616716
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/AS1A10_002T05_9000004000_27760cztM0_level2.evt modeM0/AS1A10_002T05_9000004000_27760cztM0_level2_quad_clean.evt
Size (bytes)450,529,920108,794,880
Size429.7 MB 103.8 MB
Events in quadrant A3,017,803744,788
Events in quadrant B3,288,594731,316
Events in quadrant C3,401,019700,669
Events in quadrant D3,526,156695,772

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128830
B0137220
C0138420
D0144420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6052691.140119%
B60531191.965967%
C60531011.668594%
D6053991.635553%

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 7162 6052 2 2 0.03% 0.03%
B 7163 6053 42 42 0.59% 0.69%
C 7163 6053 2 2 0.03% 0.03%
D 7163 6053 54 54 0.75% 0.89%

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 6 16 10217 61.02 777 764 154.9
A 13 254 10205 60.94 777 764 154.9
A 3 137 7005 40.29 777 764 154.9
B 3 64 201707 1405.76 757 740 143.0
B 10 245 77165 534.59 757 740 143.0
B 4 200 22124 149.58 757 740 143.0
C 3 233 396455 2299.35 738 744 172.1
C 14 238 119483 689.95 738 744 172.1
C 13 61 5091 25.26 738 744 172.1
D 1 52 341904 1928.77 752 734 176.9
D 13 104 149924 843.43 752 734 176.9
D 2 250 78536 439.85 752 734 176.9

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