ASTROSAT CZTI

Data Quality Report

Orbit 37894

Creation date: 2024-06-27T21:45:48.424933
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/AS1T05_059T01_9000005354_37894cztM0_level2.evt modeM0/AS1T05_059T01_9000005354_37894cztM0_level2_quad_clean.evt
Size (bytes)86,028,4805,169,600
Size82.0 MB 4.9 MB
Events in quadrant A644,35519,545
Events in quadrant B524,56520,020
Events in quadrant C611,94619,219
Events in quadrant D751,46317,869

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025882
B021411
C023901
D029163

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A103240.387597%
B103220.193798%
C1032111.065891%
D1031434.170708%

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 1032 1032 2 2 0.19% 0.19%
B 1032 1032 0 0 0.00% 0.00%
C 1032 1032 7 7 0.68% 0.68%
D 1032 1032 30 30 2.91% 2.91%

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 109641 3961.2 129 127 27.6
A 15 222 26463 952.59 129 127 27.6
A 13 6 2554 87.79 129 127 27.6
B 0 213 5542 205.17 129 126 26.4
B 4 171 5495 203.39 129 126 26.4
B 12 111 2955 107.17 129 126 26.4
C 0 10 54327 1744.47 128 128 31.1
C 15 214 47801 1534.42 128 128 31.1
C 14 254 6918 218.55 128 128 31.1
D 1 47 113636 3599.65 124 120 31.5
D 1 52 101094 3201.94 124 120 31.5
D 9 49 49841 1576.68 124 120 31.5

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