ASTROSAT CZTI

Data Quality Report

Orbit 27039

Creation date: 2024-06-27T19:35:48.088244
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/AS1A09_120T02_9000003904_27039cztM0_level2.evt modeM0/AS1A09_120T02_9000003904_27039cztM0_level2_quad_clean.evt
Size (bytes)663,384,960111,651,840
Size632.7 MB 106.5 MB
Events in quadrant A6,005,195733,499
Events in quadrant B3,464,757809,134
Events in quadrant C3,491,653777,615
Events in quadrant D6,711,596629,803

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220790
B0142130
C0143040
D0239810

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6168102516.618029%
B6168671.086252%
C61681011.637484%
D6168156425.356680%

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 7513 6168 737 737 9.81% 11.95%
B 7513 6168 6 6 0.08% 0.10%
C 7513 6168 0 0 0.00% 0.00%
D 7513 6168 1522 1522 20.26% 24.68%

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 14 235 2801878 17515.38 806 797 159.9
A 0 13 43124 264.67 806 797 159.9
A 8 192 28630 174.04 806 797 159.9
B 0 219 18526 107.57 877 860 164.2
B 12 111 18526 107.57 877 860 164.2
B 11 111 16654 96.17 877 860 164.2
C 14 238 139037 693.57 856 867 199.2
C 15 208 10727 49.49 856 867 199.2
C 14 67 7747 34.54 856 867 199.2
D 1 52 3698128 20635.97 755 738 179.2
D 2 250 126813 703.65 755 738 179.2
D 2 234 25015 135.5 755 738 179.2

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