ASTROSAT CZTI

Data Quality Report

Orbit 12867

Creation date: 2024-06-27T16:33:18.743920
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_048T01_9000001890_12867cztM0_level2.evt modeM0/AS1A04_048T01_9000001890_12867cztM0_level2_quad_clean.evt
Size (bytes)522,207,36078,716,160
Size498.0 MB 75.1 MB
Events in quadrant A3,366,799505,930
Events in quadrant B5,229,745468,604
Events in quadrant C3,205,978502,228
Events in quadrant D3,594,741476,647

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138503
B0196132
C0133212
D0146882

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61561101.786875%
B615687214.165042%
C6156901.461988%
D61561272.063028%

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 7472 6158 1 1 0.01% 0.02%
B 7472 6158 564 564 7.55% 9.16%
C 7472 6158 2 2 0.03% 0.03%
D 7472 6158 36 36 0.48% 0.58%

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 12 189 50725 297.48 847 833 167.7
A 8 15 26203 151.27 847 833 167.7
A 9 143 21239 121.67 847 833 167.7
B 4 239 1701165 11834.66 778 762 143.7
B 3 64 218940 1518.5 778 762 143.7
B 0 85 160689 1113.08 778 762 143.7
C 14 234 10399 51.71 819 824 185.1
C 13 61 5834 27.06 819 824 185.1
C 3 202 2015 6.43 819 824 185.1
D 1 52 455908 2352.67 819 799 193.4
D 2 234 24676 123.43 819 799 193.4
D 2 136 14646 71.58 819 799 193.4

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