ASTROSAT CZTI

Data Quality Report

Orbit 43921

Creation date: 2024-06-27T22:57:12.910594
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_023T01_9000005916_43921cztM0_level2.fits modeM0/AS1A13_023T01_9000005916_43921cztM0_level2_quad_clean.evt
Size (bytes)450,708,480110,376,000
Size429.8 MB 105.3 MB
Events in quadrant A5,435,424727,758
Events in quadrant B3,864,471765,577
Events in quadrant C2,990,334732,190
Events in quadrant D3,881,023656,431

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208752
B0158052
C0134652
D0161652

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66012443.696410%
B6601931.408877%
C6601110.166641%
D66011111.681563%

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 7726 6602 124 124 1.60% 1.88%
B 7726 6602 39 39 0.50% 0.59%
C 7726 6602 1 1 0.01% 0.02%
D 7726 6602 98 98 1.27% 1.48%

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 1154077 7575.11 736 721 152.3
A 15 222 717828 4709.87 736 721 152.3
A 15 223 538470 3531.87 736 721 152.3
B 5 235 691025 4701.92 746 723 146.8
B 5 172 103261 698.43 746 723 146.8
B 4 171 52521 352.82 746 723 146.8
C 3 233 53490 303.97 737 742 173.5
C 10 22 35039 197.64 737 742 173.5
C 14 254 11631 62.75 737 742 173.5
D 12 233 169078 922.91 726 706 182.4
D 13 171 160490 875.84 726 706 182.4
D 5 235 158563 865.27 726 706 182.4

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