ASTROSAT CZTI

Data Quality Report

Orbit 45262

Creation date: 2024-06-27T23:11:41.589022
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_024T03_9000006064_45262cztM0_level2.fits modeM0/AS1A13_024T03_9000006064_45262cztM0_level2_quad_clean.evt
Size (bytes)507,193,920114,577,920
Size483.7 MB 109.3 MB
Events in quadrant A5,847,384764,249
Events in quadrant B3,493,511794,788
Events in quadrant C3,214,200750,790
Events in quadrant D5,666,295662,669

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221860
B0153140
C0147480
D02175714

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7135700.981079%
B7135570.798879%
C713690.126121%
D71323264.570948%

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 7135 7135 31 31 0.43% 0.43%
B 7135 7135 20 20 0.28% 0.28%
C 7136 7136 4 4 0.06% 0.06%
D 7135 7133 331 331 4.64% 4.64%

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 10 83 2536759 14963.56 803 786 169.5
A 13 248 152496 895.17 803 786 169.5
A 0 243 18262 103.12 803 786 169.5
B 12 16 90237 564.63 800 772 158.4
B 4 170 59773 372.37 800 772 158.4
B 15 54 44004 272.84 800 772 158.4
C 3 233 56013 296.5 785 788 186.3
C 14 254 37016 194.51 785 788 186.3
C 2 14 23879 123.97 785 788 186.3
D 13 249 894847 4646.15 768 742 192.4
D 11 241 671319 3484.6 768 742 192.4
D 12 233 283489 1469.27 768 742 192.4

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