ASTROSAT CZTI

Data Quality Report

Orbit 11928

Creation date: 2024-06-27T16:20:11.998330
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_124T01_9000001766_11928cztM0_level2.evt modeM0/AS1A04_124T01_9000001766_11928cztM0_level2_quad_clean.evt
Size (bytes)469,100,160125,400,960
Size447.4 MB 119.6 MB
Events in quadrant A3,431,882845,370
Events in quadrant B3,943,737853,446
Events in quadrant C2,885,667843,351
Events in quadrant D3,497,367796,006

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145183
B0162222
C0134152
D0150162

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6596470.712553%
B65962513.805337%
C659680.121286%
D65961051.591874%

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 7812 6598 3 3 0.04% 0.05%
B 7812 6598 135 135 1.73% 2.05%
C 7812 6598 0 0 0.00% 0.00%
D 7812 6598 81 81 1.04% 1.23%

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 1 162 138948 901.44 758 743 153.3
A 7 144 108948 705.76 758 743 153.3
A 1 178 74786 482.94 758 743 153.3
B 4 239 477659 3352.77 755 735 142.2
B 3 64 301921 2117.33 755 735 142.2
B 15 185 86278 601.37 755 735 142.2
C 14 238 7769 41.94 737 741 167.6
C 13 61 5387 27.72 737 741 167.6
C 12 4 2459 10.25 737 741 167.6
D 8 195 233068 1359.76 720 699 170.9
D 1 52 210712 1228.94 720 699 170.9
D 13 104 114947 668.55 720 699 170.9

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