ASTROSAT CZTI

Data Quality Report

Orbit 27030

Creation date: 2024-06-27T19:35:44.125692
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_27030cztM0_level2.evt modeM0/AS1A09_120T02_9000003904_27030cztM0_level2_quad_clean.evt
Size (bytes)643,020,48094,475,520
Size613.2 MB 90.1 MB
Events in quadrant A8,093,509514,278
Events in quadrant B3,440,756648,250
Events in quadrant C3,283,977623,870
Events in quadrant D4,195,008600,035

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0285440
B0143080
C0139110
D0169650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6800189727.897059%
B6801731.073372%
C6801901.323335%
D68012032.984855%

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 7130 6800 1557 1557 21.84% 22.90%
B 7131 6801 0 0 0.00% 0.00%
C 7131 6802 0 0 0.00% 0.00%
D 7131 6802 179 179 2.51% 2.63%

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 5134747 34010.9 745 733 151.0
A 6 16 62038 406.12 745 733 151.0
A 0 13 14392 90.49 745 733 151.0
B 3 64 89040 544.3 837 817 162.1
B 3 112 25521 152.41 837 817 162.1
B 10 245 22909 136.3 837 817 162.1
C 14 238 130647 680.91 807 816 190.7
C 14 225 5563 24.9 807 816 190.7
C 13 61 5434 24.22 807 816 190.7
D 1 52 797053 4107.68 806 786 193.8
D 12 233 169467 870.17 806 786 193.8
D 2 250 103739 531.1 806 786 193.8

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