ASTROSAT CZTI

Data Quality Report

Orbit 27729

Creation date: 2024-06-27T19:43:37.066327
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/AS1T03_263T01_9000003990_27729cztM0_level2.evt modeM0/AS1T03_263T01_9000003990_27729cztM0_level2_quad_clean.evt
Size (bytes)617,952,96090,573,120
Size589.3 MB 86.4 MB
Events in quadrant A4,320,699605,324
Events in quadrant B5,625,379516,735
Events in quadrant C3,857,156591,041
Events in quadrant D4,456,309561,011

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170690
B0209340
C0157180
D0174620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67141321.966041%
B6714110516.458147%
C67141281.906464%
D67143705.510873%

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 7719 6714 59 59 0.76% 0.88%
B 7719 6714 695 695 9.00% 10.35%
C 7719 6714 0 0 0.00% 0.00%
D 7719 6714 268 268 3.47% 3.99%

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 6 16 798636 4170.26 911 897 191.3
A 13 254 10806 51.8 911 897 191.3
A 15 169 10529 50.35 911 897 191.3
B 3 64 2384534 14832.9 812 792 160.7
B 12 111 17634 104.8 812 792 160.7
B 4 200 17540 104.21 812 792 160.7
C 3 233 293453 1375.5 877 886 212.7
C 14 238 144223 673.9 877 886 212.7
C 13 61 5922 23.68 877 886 212.7
D 1 52 1080294 5077.52 853 831 212.6
D 2 250 60039 278.5 853 831 212.6
D 11 176 58263 270.15 853 831 212.6

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