ASTROSAT CZTI

Data Quality Report

Orbit 20857

Creation date: 2024-06-27T18:20:24.904154
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/AS1A05_160T01_9000003078_20857cztM0_level2.evt modeM0/AS1A05_160T01_9000003078_20857cztM0_level2_quad_clean.evt
Size (bytes)581,610,24090,803,520
Size554.7 MB 86.6 MB
Events in quadrant A3,438,390600,054
Events in quadrant B3,502,237614,056
Events in quadrant C3,530,760555,430
Events in quadrant D6,715,834539,478

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138312
B0140842
C0141622
D0245352

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6315931.472684%
B63141071.694647%
C63141892.993348%
D63141582.502376%

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 7625 6316 0 0 0.00% 0.00%
B 7624 6315 1 1 0.01% 0.02%
C 7624 6315 60 60 0.79% 0.95%
D 7624 6315 27 27 0.35% 0.43%

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 14 111 8027 40.44 893 877 176.8
A 0 226 7778 39.03 893 877 176.8
A 3 137 6618 32.47 893 877 176.8
B 0 189 26360 154.48 880 861 165.1
B 0 183 20115 116.65 880 861 165.1
B 12 111 19430 112.5 880 861 165.1
C 9 54 176339 931.78 823 830 188.4
C 14 238 131913 695.92 823 830 188.4
C 10 91 7391 34.83 823 830 188.4
D 1 239 3315092 16529.4 846 825 200.5
D 1 52 103087 510.02 846 825 200.5
D 7 223 43127 210.97 846 825 200.5

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