ASTROSAT CZTI

Data Quality Report

Orbit 22120

Creation date: 2024-06-27T18:37:04.740723
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_9000003272_22120cztM0_level2.evt modeM0/AS1A07_007T04_9000003272_22120cztM0_level2_quad_clean.evt
Size (bytes)497,344,320106,888,320
Size474.3 MB 101.9 MB
Events in quadrant A3,461,211703,876
Events in quadrant B3,660,798707,538
Events in quadrant C3,499,174673,775
Events in quadrant D3,958,055656,818

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147052
B0152682
C0147563
D0162872

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7118971.362742%
B71181281.798258%
C71171241.742307%
D71171492.093579%

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 7858 7119 0 0 0.00% 0.00%
B 7858 7119 13 13 0.17% 0.18%
C 7857 7118 0 0 0.00% 0.00%
D 7857 7118 77 77 0.98% 1.08%

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 12783 65.89 896 878 180.7
A 0 226 7844 38.55 896 878 180.7
A 3 137 7415 36.18 896 878 180.7
B 3 64 114140 670.19 884 863 169.0
B 0 190 30047 172.66 884 863 169.0
B 0 197 21616 122.78 884 863 169.0
C 14 238 135503 676.42 854 859 199.1
C 10 22 29887 145.83 854 859 199.1
C 13 61 5926 25.46 854 859 199.1
D 2 133 232876 1121.69 863 839 206.9
D 1 52 192968 928.77 863 839 206.9
D 11 176 141653 680.71 863 839 206.9

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