ASTROSAT CZTI

Data Quality Report

Orbit 07845

Creation date: 2024-06-27T15:24:43.258995
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/AS1G06_077T02_9000001076_07845cztM0_level2.evt modeM0/AS1G06_077T02_9000001076_07845cztM0_level2_quad_clean.evt
Size (bytes)485,971,20099,659,520
Size463.5 MB 95.0 MB
Events in quadrant A3,131,929638,323
Events in quadrant B3,401,977661,556
Events in quadrant C3,962,961648,124
Events in quadrant D3,773,302610,263

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136153
B0143012
C0161032
D0157392

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6595120.181956%
B6595460.697498%
C6595460.697498%
D65951121.698256%

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 7911 6597 0 0 0.00% 0.00%
B 7911 6597 11 11 0.14% 0.17%
C 7911 6597 17 17 0.21% 0.26%
D 7911 6597 107 107 1.35% 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 0 128 17093 101.0 805 792 161.4
A 15 239 7517 41.67 805 792 161.4
A 0 226 7479 41.43 805 792 161.4
B 4 239 68637 441.37 820 803 153.7
B 10 16 68106 437.92 820 803 153.7
B 4 173 29650 187.7 820 803 153.7
C 1 16 832800 4496.99 802 812 185.0
C 13 61 6401 30.21 802 812 185.0
C 12 4 2415 8.66 802 812 185.0
D 14 34 489927 2573.08 787 767 190.1
D 2 152 58871 305.64 787 767 190.1
D 13 105 50706 262.69 787 767 190.1

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