ASTROSAT CZTI

Data Quality Report

Orbit 20231027_A13_008T02_9000005900_level2

Creation date: 2023-10-30T10:25:45.722671
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/AS1A13_008T02_9000005900cztM0_level2.fits modeM0/AS1A13_008T02_9000005900cztM0_level2_quad_clean.evt
Size (bytes)630,881,280635,523,840
Size601.7 MB 606.1 MB
Events in quadrant A3,690,3623,715,278
Events in quadrant B3,762,3823,994,361
Events in quadrant C3,781,7083,838,647
Events in quadrant D2,962,2942,798,700

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0910
B0910
C0910
D0910

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03303680
B01680580
C01981290
D02847490

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014500
B014500
C014500
D014500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7141967069.389658%
B7141922113.095815%
C7141942805.992803%
D714191333618.672902%

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 80585 71406 0 0 0.00% 0.00%
B 80585 71401 0 0 0.00% 0.00%
C 80585 71372 0 0 0.00% 0.00%
D 80585 71136 0 0 0.00% 0.00%

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 0 29 3070 9.07 963 901 239.3
A 0 30 3017 8.84 963 901 239.3
A 7 110 2945 8.54 963 901 239.3
B 2 9 3241 11.57 997 948 198.1
B 3 17 2751 9.1 997 948 198.1
B 2 8 2589 8.28 997 948 198.1
C 3 202 3029 8.02 1002 931 261.4
C 1 80 2892 7.5 1002 931 261.4
C 1 81 2889 7.49 1002 931 261.4
D 10 189 2212 6.09 860 780 234.9
D 10 113 2195 6.02 860 780 234.9
D 7 3 2186 5.98 860 780 234.9

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