ASTROSAT CZTI

Data Quality Report

Orbit 11493

Creation date: 2024-06-27T16:13:45.076610
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_107T01_9000001684_11493cztM0_level2.evt modeM0/AS1A04_107T01_9000001684_11493cztM0_level2_quad_clean.evt
Size (bytes)584,003,52083,796,480
Size556.9 MB 79.9 MB
Events in quadrant A6,241,639512,670
Events in quadrant B3,740,826545,767
Events in quadrant C2,780,757548,394
Events in quadrant D4,522,059516,224

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225542
B0148921
C0121671
D0173741

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5922107318.118879%
B59222273.833164%
C5922470.793651%
D59222764.660588%

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 7188 5924 755 755 10.50% 12.74%
B 7188 5924 88 88 1.22% 1.49%
C 7188 5924 0 0 0.00% 0.00%
D 7188 5924 227 227 3.16% 3.83%

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 8 5 3465272 25149.08 686 672 137.8
A 1 162 33417 237.69 686 672 137.8
A 9 143 19793 138.8 686 672 137.8
B 4 239 657652 4890.16 719 704 134.3
B 11 51 145188 1075.5 719 704 134.3
B 15 204 43333 317.32 719 704 134.3
C 13 61 5208 27.41 711 717 163.9
C 12 4 4290 21.8 711 717 163.9
C 14 234 3562 17.36 711 717 163.9
D 1 52 1109728 6543.04 708 689 169.5
D 2 120 225236 1324.77 708 689 169.5
D 8 195 143866 844.71 708 689 169.5

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