ASTROSAT CZTI

Data Quality Report

Orbit 28677

Creation date: 2024-06-27T19:54:49.372458
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/AS1A10_110T03_9000004114_28677cztM0_level2.evt modeM0/AS1A10_110T03_9000004114_28677cztM0_level2_quad_clean.evt
Size (bytes)586,788,48067,890,240
Size559.6 MB 64.7 MB
Events in quadrant A3,240,159410,978
Events in quadrant B3,820,955414,821
Events in quadrant C3,340,683402,102
Events in quadrant D6,938,512383,718

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133341
B0152041
C0135781
D0250171

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63631021.603017%
B63632373.724658%
C63631582.483105%
D636398115.417256%

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 7338 6363 0 0 0.00% 0.00%
B 7338 6363 58 58 0.79% 0.91%
C 7338 6363 1 1 0.01% 0.02%
D 7338 6363 817 817 11.13% 12.84%

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 13 254 11211 61.81 838 820 168.1
A 3 137 7830 41.7 838 820 168.1
A 0 226 7188 37.88 838 820 168.1
B 15 33 318858 2028.36 822 802 156.8
B 10 245 256022 1627.63 822 802 156.8
B 12 111 19000 116.06 822 802 156.8
C 14 238 138109 727.35 806 812 188.8
C 3 233 32454 167.63 806 812 188.8
C 2 16 16335 82.23 806 812 188.8
D 1 52 3202667 17209.1 778 757 186.1
D 8 195 396776 2128.46 778 757 186.1
D 2 250 212252 1136.71 778 757 186.1

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