ASTROSAT CZTI

Data Quality Report

Orbit 46925

Creation date: 2024-06-27T23:29:30.736957
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/AS1A13_074T06_9000006284_46925cztM0_level2.fits modeM0/AS1A13_074T06_9000006284_46925cztM0_level2_quad_clean.evt
Size (bytes)546,001,92091,632,960
Size520.7 MB 87.4 MB
Events in quadrant A5,749,597635,905
Events in quadrant B7,538,651539,434
Events in quadrant C2,787,111621,163
Events in quadrant D3,690,094575,120

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021257204
B026956558
C012720146
D015099130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57692243.882822%
B5701136223.890546%
C57611091.892033%
D57721562.702703%

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 6969 5818 33 33 0.47% 0.57%
B 6969 5785 1106 1106 15.87% 19.12%
C 6970 5808 72 72 1.03% 1.24%
D 6970 5815 137 137 1.97% 2.36%

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 3167146 23055.2 657 646 137.3
A 7 3 17722 124.33 657 646 137.3
A 13 248 9387 63.64 657 646 137.3
B 3 112 4769078 39397.98 614 597 121.0
B 5 172 113516 932.96 614 597 121.0
B 0 198 51390 419.66 614 597 121.0
C 14 254 258051 1703.23 636 639 151.1
C 15 208 14284 90.29 636 639 151.1
C 12 249 11232 70.09 636 639 151.1
D 1 52 500604 3087.96 638 617 161.9
D 12 233 121414 746.05 638 617 161.9
D 11 192 112384 690.28 638 617 161.9

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