ASTROSAT CZTI

Data Quality Report

Orbit 25520

Creation date: 2024-06-27T19:18:35.521931
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/AS1A07_147T01_9000003722_25520cztM0_level2.evt modeM0/AS1A07_147T01_9000003722_25520cztM0_level2_quad_clean.evt
Size (bytes)492,491,52077,578,560
Size469.7 MB 74.0 MB
Events in quadrant A3,517,936496,031
Events in quadrant B3,537,111501,138
Events in quadrant C3,479,817462,054
Events in quadrant D3,949,022446,506

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140550
B0141470
C0139470
D0155150

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63481322.079395%
B63481672.630750%
C63481702.678009%
D63482343.686200%

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 7598 6349 0 0 0.00% 0.00%
B 7598 6349 0 0 0.00% 0.00%
C 7598 6349 0 0 0.00% 0.00%
D 7598 6349 103 103 1.36% 1.62%

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 13 254 9247 46.2 912 896 180.8
A 0 226 7868 38.57 912 896 180.8
A 3 137 7808 38.24 912 896 180.8
B 12 111 20167 113.37 901 881 170.1
B 11 111 18519 103.68 901 881 170.1
B 14 111 16913 94.24 901 881 170.1
C 14 238 138921 700.8 849 855 197.0
C 3 233 26860 132.0 849 855 197.0
C 13 61 5952 25.87 849 855 197.0
D 1 52 486585 2340.41 858 833 207.6
D 8 195 180241 864.41 858 833 207.6
D 2 120 29358 137.44 858 833 207.6

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