ASTROSAT CZTI

Data Quality Report

Orbit 25665

Creation date: 2024-06-27T19:20:10.475779
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/AS1A09_016T03_9000003740_25665cztM0_level2.evt modeM0/AS1A09_016T03_9000003740_25665cztM0_level2_quad_clean.evt
Size (bytes)499,377,60078,940,800
Size476.2 MB 75.3 MB
Events in quadrant A3,365,102503,534
Events in quadrant B3,318,301517,698
Events in quadrant C3,307,570479,355
Events in quadrant D4,713,946458,567

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134600
B0133070
C0133210
D0182300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6177280.453294%
B6177370.598996%
C6177781.262749%
D61761001.619171%

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 7502 6178 0 0 0.00% 0.00%
B 7502 6178 2 2 0.03% 0.03%
C 7502 6178 0 0 0.00% 0.00%
D 7501 6177 68 68 0.91% 1.10%

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 8 192 108564 647.83 840 827 166.3
A 12 96 16695 95.41 840 827 166.3
A 13 254 8962 48.91 840 827 166.3
B 12 111 18703 113.38 840 823 157.7
B 11 111 16863 101.71 840 823 157.7
B 14 111 15753 94.67 840 823 157.7
C 14 238 133543 715.92 800 807 185.4
C 5 112 36184 190.81 800 807 185.4
C 3 233 14998 76.54 800 807 185.4
D 1 52 1290702 6627.91 796 775 194.6
D 8 195 370136 1897.85 796 775 194.6
D 13 104 36985 186.05 796 775 194.6

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