ASTROSAT CZTI

Data Quality Report

Orbit 12780

Creation date: 2024-06-27T16:32:09.217766
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/AS1A04_110T04_9000001886_12780cztM0_level2.evt modeM0/AS1A04_110T04_9000001886_12780cztM0_level2_quad_clean.evt
Size (bytes)501,215,040131,532,480
Size478.0 MB 125.4 MB
Events in quadrant A3,227,648906,609
Events in quadrant B4,436,359892,148
Events in quadrant C3,094,673895,293
Events in quadrant D3,991,568848,514

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134602
B0172481
C0131531
D0160051

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63171111.757163%
B63174767.535222%
C6317761.203103%
D63171582.501187%

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 7598 6319 0 0 0.00% 0.00%
B 7598 6319 274 274 3.61% 4.34%
C 7598 6319 0 0 0.00% 0.00%
D 7598 6319 84 84 1.11% 1.33%

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 12 189 78975 487.1 804 787 160.5
A 8 15 21387 128.34 804 787 160.5
A 15 222 18044 107.51 804 787 160.5
B 4 239 1050796 7327.24 779 761 143.3
B 0 219 145275 1008.43 779 761 143.3
B 3 64 139256 966.43 779 761 143.3
C 15 208 50641 283.84 780 784 175.7
C 13 61 5595 27.39 780 784 175.7
C 3 202 1959 6.69 780 784 175.7
D 1 52 627918 3403.28 780 758 184.3
D 8 195 298547 1615.95 780 758 184.3
D 2 136 29268 154.71 780 758 184.3

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