ASTROSAT CZTI

Data Quality Report

Orbit 00130

Creation date: 2024-06-27T13:56:47.143925
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/AS1P01_003T01_9000000002_00130cztM0_level2.evt modeM0/AS1P01_003T01_9000000002_00130cztM0_level2_quad_clean.evt
Size (bytes)939,369,60093,456,000
Size895.9 MB 89.1 MB
Events in quadrant A6,778,418609,297
Events in quadrant B7,147,772633,993
Events in quadrant C6,396,439617,191
Events in quadrant D7,763,747586,986

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240032
B0250941
C0229051
D0270081

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5469130.237703%
B5469130.237703%
C5469390.713110%
D54691632.980435%

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 7090 5471 192 192 2.71% 3.51%
B 7090 5471 255 255 3.60% 4.66%
C 7090 5471 160 160 2.26% 2.92%
D 7090 5471 712 712 10.04% 13.01%

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 15 127 96090 341.92 1692 1652 276.2
A 13 65 41510 144.31 1692 1652 276.2
A 0 96 16304 53.05 1692 1652 276.2
B 0 235 471830 1260.0 1706 1712 373.1
B 8 6 42190 108.49 1706 1712 373.1
B 8 236 19542 47.79 1706 1712 373.1
C 0 203 206050 470.25 1559 1617 434.7
C 9 185 18697 39.29 1559 1617 434.7
C 9 204 14650 29.98 1559 1617 434.7
D 10 244 541699 1426.12 1632 1621 378.7
D 12 207 138153 360.52 1632 1621 378.7
D 10 151 100124 260.11 1632 1621 378.7

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