ASTROSAT CZTI

Data Quality Report

Orbit 09202

Creation date: 2024-06-27T15:42:38.256823
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/AS1C02_042T02_9000001284_09202cztM0_level2.evt modeM0/AS1C02_042T02_9000001284_09202cztM0_level2_quad_clean.evt
Size (bytes)479,923,20086,711,040
Size457.7 MB 82.7 MB
Events in quadrant A4,577,555543,034
Events in quadrant B3,301,971559,399
Events in quadrant C2,972,407543,826
Events in quadrant D3,241,587526,469

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180023
B0138922
C0133024
D0142922

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64941772.725593%
B6494831.278103%
C6493430.662252%
D6494841.293502%

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 8548 6493 45 45 0.53% 0.69%
B 8549 6494 11 11 0.13% 0.17%
C 8549 6494 0 0 0.00% 0.00%
D 8548 6493 35 35 0.41% 0.54%

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 8 5 1364371 8564.63 780 765 159.2
A 1 162 114399 713.72 780 765 159.2
A 5 16 30937 189.51 780 765 159.2
B 4 48 123694 807.46 788 769 152.2
B 4 173 49801 322.08 788 769 152.2
B 0 245 19249 121.39 788 769 152.2
C 3 233 10446 54.68 758 763 177.1
C 13 61 5750 28.16 758 763 177.1
C 8 222 3703 16.6 758 763 177.1
D 1 52 130497 652.97 750 729 198.7
D 7 71 127964 640.22 750 729 198.7
D 13 112 46189 228.75 750 729 198.7

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