ASTROSAT CZTI

Data Quality Report

Orbit 22372

Creation date: 2024-06-27T18:39:57.252358
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/AS1A07_007T04_9000003310_22372cztM0_level2.evt modeM0/AS1A07_007T04_9000003310_22372cztM0_level2_quad_clean.evt
Size (bytes)456,753,60098,807,040
Size435.6 MB 94.2 MB
Events in quadrant A3,076,466648,467
Events in quadrant B3,152,737654,266
Events in quadrant C3,121,283625,068
Events in quadrant D4,032,725603,237

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135321
B0136401
C0135271
D0163531

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6608390.590194%
B6608440.665860%
C6608751.134988%
D66092053.101831%

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 7473 6608 0 0 0.00% 0.00%
B 7473 6608 0 0 0.00% 0.00%
C 7473 6608 1 1 0.01% 0.02%
D 7474 6609 125 125 1.67% 1.89%

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 13 254 9106 51.48 798 777 161.8
A 0 226 6987 38.38 798 777 161.8
A 3 137 6918 37.96 798 777 161.8
B 12 111 18399 116.92 793 772 150.8
B 0 190 18184 115.49 793 772 150.8
B 11 111 16127 101.85 793 772 150.8
C 14 238 121678 672.09 766 769 179.9
C 0 207 10853 56.05 766 769 179.9
C 13 61 5411 25.8 766 769 179.9
D 1 52 915281 4868.98 773 751 187.8
D 13 172 150656 798.1 773 751 187.8
D 2 234 29341 152.21 773 751 187.8

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