ASTROSAT CZTI

Data Quality Report

Orbit 18768

Creation date: 2024-06-27T17:54:36.057253
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_115T03_9000002806_18768cztM0_level2.evt modeM0/AS1A05_115T03_9000002806_18768cztM0_level2_quad_clean.evt
Size (bytes)445,916,16090,970,560
Size425.3 MB 86.8 MB
Events in quadrant A3,241,496578,882
Events in quadrant B3,205,474587,577
Events in quadrant C3,186,335564,515
Events in quadrant D3,414,067555,217

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138912
B0137612
C0136942
D0146274

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6733560.831724%
B6733580.861429%
C6733620.920838%
D6732560.831848%

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 7668 6734 3 3 0.04% 0.04%
B 7668 6734 0 0 0.00% 0.00%
C 7668 6734 0 0 0.00% 0.00%
D 7667 6733 24 24 0.31% 0.36%

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 63734 380.52 816 799 165.4
A 15 192 12866 72.96 816 799 165.4
A 11 29 12456 70.48 816 799 165.4
B 0 229 24468 151.54 810 789 156.3
B 12 111 19521 119.88 810 789 156.3
B 11 111 17091 104.33 810 789 156.3
C 14 238 119940 654.83 775 780 182.0
C 3 233 20047 105.88 775 780 182.0
C 8 128 14102 73.21 775 780 182.0
D 1 52 196289 1014.63 789 763 192.7
D 7 223 189417 978.97 789 763 192.7
D 7 96 26696 134.57 789 763 192.7

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