ASTROSAT CZTI

Data Quality Report

Orbit 09770

Creation date: 2024-06-27T15:50:26.647496
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/AS1A03_080T01_9000001392_09770cztM0_level2.evt modeM0/AS1A03_080T01_9000001392_09770cztM0_level2_quad_clean.evt
Size (bytes)441,823,68069,485,760
Size421.4 MB 66.3 MB
Events in quadrant A3,037,948415,705
Events in quadrant B3,147,361427,838
Events in quadrant C3,014,005427,451
Events in quadrant D3,758,353398,352

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128593
B0131112
C0128062
D0152072

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6226420.674590%
B6226651.044009%
C6226340.546097%
D62261762.826855%

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 7536 6227 0 0 0.00% 0.00%
B 7536 6227 2 2 0.03% 0.03%
C 7536 6227 0 0 0.00% 0.00%
D 7536 6227 142 142 1.88% 2.28%

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 5 112 23454 146.05 775 759 155.4
A 8 15 17501 107.74 775 759 155.4
A 0 226 7037 40.4 775 759 155.4
B 0 214 36491 242.83 786 769 147.1
B 4 48 27710 183.14 786 769 147.1
B 0 219 16086 104.12 786 769 147.1
C 12 4 8485 43.67 770 774 176.6
C 13 61 5771 28.3 770 774 176.6
C 14 67 2353 8.94 770 774 176.6
D 12 233 610869 3370.47 753 734 181.0
D 1 52 158218 869.96 753 734 181.0
D 2 152 58390 318.5 753 734 181.0

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