ASTROSAT CZTI

Data Quality Report

Orbit 13740

Creation date: 2024-06-27T16:45:25.881219
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/AS1G08_062T01_9000002038_13740cztM0_level2.evt modeM0/AS1G08_062T01_9000002038_13740cztM0_level2_quad_clean.evt
Size (bytes)502,911,36093,709,440
Size479.6 MB 89.4 MB
Events in quadrant A3,187,680590,666
Events in quadrant B3,522,398584,456
Events in quadrant C3,252,410616,245
Events in quadrant D4,816,319582,133

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138102
B0146051
C0138241
D0188141

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66662063.090309%
B66662313.465347%
C66661512.265227%
D66663104.650465%

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 6762 6669 1 1 0.01% 0.01%
B 6762 6669 19 19 0.28% 0.28%
C 6762 6669 1 1 0.01% 0.01%
D 6762 6669 94 94 1.39% 1.41%

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 69 13735 75.91 822 803 170.4
A 1 162 9793 52.77 822 803 170.4
A 0 226 7405 38.75 822 803 170.4
B 3 64 89631 564.12 816 795 157.5
B 0 219 66561 417.62 816 795 157.5
B 4 173 57870 362.43 816 795 157.5
C 3 233 100155 523.16 807 810 189.9
C 13 61 5745 25.99 807 810 189.9
C 14 234 3683 15.13 807 810 189.9
D 10 157 589260 3010.03 797 773 195.5
D 13 168 566268 2892.43 797 773 195.5
D 5 222 293067 1495.04 797 773 195.5

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