ASTROSAT CZTI

Data Quality Report

Orbit 12376

Creation date: 2024-06-27T16:26:20.630353
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_072T03_9000001836_12376cztM0_level2.evt modeM0/AS1G08_072T03_9000001836_12376cztM0_level2_quad_clean.evt
Size (bytes)875,125,44057,795,840
Size834.6 MB 55.1 MB
Events in quadrant A3,883,699387,831
Events in quadrant B15,047,194150,283
Events in quadrant C3,517,811396,794
Events in quadrant D3,630,936376,609

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156203
B0489512
C0143422
D0147682

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62661352.154485%
B6266595795.068624%
C62662003.191829%
D62662023.223747%

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 7501 6266 0 0 0.00% 0.00%
B 7501 6266 5738 5738 76.50% 91.57%
C 7501 6266 104 104 1.39% 1.66%
D 7501 6266 105 105 1.40% 1.68%

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 1 162 171360 1061.74 809 795 160.6
A 13 251 117126 724.14 809 795 160.6
A 8 15 100588 621.2 809 795 160.6
B 2 48 7217978 89282.98 437 428 80.8
B 2 32 5799369 71734.42 437 428 80.8
B 4 239 312606 3861.72 437 428 80.8
C 15 208 392965 2134.42 798 803 183.7
C 6 96 12206 62.06 798 803 183.7
C 13 61 5798 27.19 798 803 183.7
D 1 52 441525 2331.22 791 769 189.1
D 10 199 116800 613.7 791 769 189.1
D 7 71 43616 226.62 791 769 189.1

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