ASTROSAT CZTI

Data Quality Report

Orbit 46242

Creation date: 2024-06-27T23:20:44.046104
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/AS1A13_065T07_9000006188_46242cztM0_level2.fits modeM0/AS1A13_065T07_9000006188_46242cztM0_level2_quad_clean.evt
Size (bytes)456,768,000108,705,600
Size435.6 MB 103.7 MB
Events in quadrant A6,192,268724,404
Events in quadrant B3,655,519755,980
Events in quadrant C3,321,474704,221
Events in quadrant D3,243,610661,588

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0226601
B0150151
C0144291
D0141261

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63812153.369378%
B6381791.238050%
C63821622.538389%
D6382681.065497%

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 7541 6381 29 29 0.38% 0.45%
B 7541 6381 17 17 0.23% 0.27%
C 7542 6382 125 125 1.66% 1.96%
D 7542 6382 44 44 0.58% 0.69%

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 3054841 20012.91 737 723 152.6
A 0 247 206159 1346.17 737 723 152.6
A 14 235 36351 233.46 737 723 152.6
B 3 112 602896 4139.2 733 711 145.5
B 5 171 71361 485.62 733 711 145.5
B 8 234 40020 270.2 733 711 145.5
C 12 2 453707 2699.29 709 712 167.8
C 3 9 63212 372.42 709 712 167.8
C 1 3 20270 116.54 709 712 167.8
D 1 52 85978 470.5 720 698 181.3
D 5 235 85448 467.58 720 698 181.3
D 5 33 60042 327.41 720 698 181.3

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