ASTROSAT CZTI

Data Quality Report

Orbit 12769

Creation date: 2024-06-27T16:32:03.325640
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/AS1A04_110T04_9000001886_12769cztM0_level2.evt modeM0/AS1A04_110T04_9000001886_12769cztM0_level2_quad_clean.evt
Size (bytes)527,990,400131,811,840
Size503.5 MB 125.7 MB
Events in quadrant A3,257,663892,650
Events in quadrant B4,282,303885,108
Events in quadrant C3,205,259887,475
Events in quadrant D4,757,906827,476

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147983
B0176692
C0146862
D0193022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7164610.851480%
B71643935.485762%
C7164500.697934%
D71644336.044109%

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 8921 7168 0 0 0.00% 0.00%
B 8921 7168 194 194 2.17% 2.71%
C 8921 7168 0 0 0.00% 0.00%
D 8921 7168 257 257 2.88% 3.59%

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 12 189 10809 58.16 839 820 171.8
A 8 6 9737 51.92 839 820 171.8
A 0 226 7713 40.13 839 820 171.8
B 4 239 885059 5685.56 825 801 155.5
B 0 85 43936 277.35 825 801 155.5
B 3 209 23806 147.92 825 801 155.5
C 13 61 5989 27.49 820 821 188.0
C 15 208 5508 24.93 820 821 188.0
C 0 207 2388 8.33 820 821 188.0
D 1 52 1129460 5912.8 797 774 190.9
D 10 253 222261 1160.29 797 774 190.9
D 8 195 167791 874.94 797 774 190.9

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