ASTROSAT CZTI

Data Quality Report

Orbit 12636

Creation date: 2024-06-27T16:30:19.382106
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/AS1G08_071T01_9000001874_12636cztM0_level2.evt modeM0/AS1G08_071T01_9000001874_12636cztM0_level2_quad_clean.evt
Size (bytes)573,696,000106,488,000
Size547.1 MB 101.6 MB
Events in quadrant A3,308,928705,110
Events in quadrant B5,994,094656,827
Events in quadrant C3,687,455722,089
Events in quadrant D3,937,777681,729

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142303
B0222892
C0152912
D0160792

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6574831.262549%
B657495614.542136%
C65741382.099179%
D65741001.521144%

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 9286 6577 2 2 0.02% 0.03%
B 9286 6576 663 663 7.14% 10.08%
C 9286 6577 67 67 0.72% 1.02%
D 9286 6577 16 16 0.17% 0.24%

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 8 15 58535 337.68 842 824 170.9
A 8 192 8269 43.56 842 824 170.9
A 0 226 7505 39.09 842 824 170.9
B 4 239 1543543 10443.68 794 775 147.7
B 3 64 840243 5682.73 794 775 147.7
B 0 85 183566 1237.39 794 775 147.7
C 15 208 417779 2179.9 834 840 191.3
C 12 4 14055 69.09 834 840 191.3
C 13 61 6105 27.52 834 840 191.3
D 10 157 553266 2800.38 823 800 197.3
D 1 255 143951 725.62 823 800 197.3
D 1 52 33899 167.77 823 800 197.3

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