ASTROSAT CZTI

Data Quality Report

Orbit 12858

Creation date: 2024-06-27T16:33:14.338868
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_12858cztM0_level2.evt modeM0/AS1A04_048T01_9000001890_12858cztM0_level2_quad_clean.evt
Size (bytes)672,511,68096,600,960
Size641.4 MB 92.1 MB
Events in quadrant A4,261,913598,027
Events in quadrant B7,641,123564,425
Events in quadrant C3,944,093597,136
Events in quadrant D3,943,015574,404

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183103
B0285342
C0175462
D0177792

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85121331.562500%
B8512135415.906955%
C8512430.505169%
D8512370.434680%

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 8998 8515 6 6 0.07% 0.07%
B 8998 8515 708 708 7.87% 8.31%
C 8998 8515 0 0 0.00% 0.00%
D 8998 8515 10 10 0.11% 0.12%

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 200614 938.33 1041 1016 212.7
A 8 15 30576 138.97 1041 1016 212.7
A 15 222 19262 85.78 1041 1016 212.7
B 4 239 2832052 15414.96 962 937 183.7
B 0 85 630270 3426.62 962 937 183.7
B 3 64 123228 665.85 962 937 183.7
C 13 61 7473 27.57 1011 1017 234.2
C 14 234 2447 6.11 1011 1017 234.2
C 3 202 2419 5.99 1011 1017 234.2
D 4 95 56743 230.02 1008 978 242.4
D 1 52 52533 212.66 1008 978 242.4
D 2 234 32772 131.15 1008 978 242.4

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