ASTROSAT CZTI

Data Quality Report

Orbit 36646

Creation date: 2024-06-27T21:29:40.945078
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/AS1A11_049T04_9000005230_36646cztM0_level2.evt modeM0/AS1A11_049T04_9000005230_36646cztM0_level2_quad_clean.evt
Size (bytes)439,248,96067,625,280
Size418.9 MB 64.5 MB
Events in quadrant A2,883,617426,677
Events in quadrant B3,228,587416,390
Events in quadrant C3,323,634408,828
Events in quadrant D3,474,976392,383

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122163
B0132492
C0133402
D0143562

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5762170.295036%
B57621412.447067%
C57621562.707393%
D57621933.349531%

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 7284 5763 8 8 0.11% 0.14%
B 7284 5763 104 104 1.43% 1.80%
C 7284 5763 128 128 1.76% 2.22%
D 7284 5763 151 151 2.07% 2.62%

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 10 83 216404 1606.51 665 655 134.3
A 9 143 80988 598.18 665 655 134.3
A 13 254 10067 70.08 665 655 134.3
B 0 190 312945 2460.6 654 637 126.9
B 5 255 106966 837.74 654 637 126.9
B 0 221 102407 801.82 654 637 126.9
C 0 10 470082 3147.72 636 640 149.1
C 15 214 241615 1615.79 636 640 149.1
C 14 254 62095 412.07 636 640 149.1
D 12 6 474966 3062.83 635 619 154.9
D 13 171 131376 844.29 635 619 154.9
D 2 153 84922 544.34 635 619 154.9

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