ASTROSAT CZTI

Data Quality Report

Orbit 06974

Creation date: 2024-06-27T15:13:56.179892
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/AS1A02_090T02_9000000956_06974cztM0_level2.evt modeM0/AS1A02_090T02_9000000956_06974cztM0_level2_quad_clean.evt
Size (bytes)442,560,96086,546,880
Size422.1 MB 82.5 MB
Events in quadrant A3,017,864548,051
Events in quadrant B3,039,184557,156
Events in quadrant C2,911,287553,207
Events in quadrant D4,005,234521,556

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130132
B0130181
C0128711
D0155891

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6318731.155429%
B6318721.139601%
C6318350.553973%
D63182944.653371%

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 7468 6319 2 2 0.03% 0.03%
B 7468 6319 10 10 0.13% 0.16%
C 7468 6319 1 1 0.01% 0.02%
D 7468 6319 238 238 3.19% 3.77%

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 14 239 36765 233.48 765 751 154.2
A 0 23 20055 125.15 765 751 154.2
A 0 226 8630 51.08 765 751 154.2
B 0 219 50600 341.8 764 747 145.9
B 0 228 15536 101.4 764 747 145.9
B 12 111 14734 95.9 764 747 145.9
C 7 247 8785 47.13 740 745 170.6
C 1 16 6734 35.11 740 745 170.6
C 13 61 5677 28.91 740 745 170.6
D 1 239 716502 3934.66 732 709 181.9
D 8 195 426348 2339.71 732 709 181.9
D 2 136 91985 501.74 732 709 181.9

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