ASTROSAT CZTI

Data Quality Report

Orbit 25721

Creation date: 2024-06-27T19:20:46.736534
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_008T06_9000003748_25721cztM0_level2.evt modeM0/AS1A09_008T06_9000003748_25721cztM0_level2_quad_clean.evt
Size (bytes)476,110,08097,850,880
Size454.1 MB 93.3 MB
Events in quadrant A3,218,947643,988
Events in quadrant B3,354,379660,931
Events in quadrant C3,344,038637,085
Events in quadrant D4,108,782616,413

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133440
B0138420
C0138350
D0161550

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5793400.690489%
B5793581.001208%
C57941061.829479%
D57941512.606144%

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 7223 5793 0 0 0.00% 0.00%
B 7223 5794 8 8 0.11% 0.14%
C 7224 5794 0 0 0.00% 0.00%
D 7224 5795 108 108 1.50% 1.86%

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 9 130 26098 154.97 827 813 163.2
A 13 254 9809 55.14 827 813 163.2
A 0 226 7013 38.0 827 813 163.2
B 5 172 43670 282.09 830 816 151.9
B 0 190 26039 166.03 830 816 151.9
B 3 112 22544 143.03 830 816 151.9
C 14 238 131983 699.24 814 822 187.6
C 3 233 31059 161.2 814 822 187.6
C 1 16 6098 28.13 814 822 187.6
D 1 52 683688 3480.42 816 796 196.2
D 8 195 170079 862.77 816 796 196.2
D 12 233 61739 310.6 816 796 196.2

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