ASTROSAT CZTI

Data Quality Report

Orbit 08838

Creation date: 2024-06-27T15:37:52.656499
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/AS1G07_087T01_9000001228_08838cztM0_level2.evt modeM0/AS1G07_087T01_9000001228_08838cztM0_level2_quad_clean.evt
Size (bytes)543,254,40075,965,760
Size518.1 MB 72.4 MB
Events in quadrant A4,408,392449,676
Events in quadrant B3,762,922464,383
Events in quadrant C3,201,743454,850
Events in quadrant D4,599,629438,563

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01764534
B01581527
C01450334
D01841421

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01462
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70752613.689046%
B70741482.092169%
C7068721.018676%
D70763805.370266%

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 8723 7083 111 111 1.27% 1.57%
B 8723 7082 45 45 0.52% 0.64%
C 8723 7082 0 0 0.00% 0.00%
D 8723 7082 295 295 3.38% 4.17%

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 15 223 476378 2842.26 829 810 167.3
A 8 5 302462 1802.84 829 810 167.3
A 15 239 236644 1409.47 829 810 167.3
B 4 48 432588 2673.88 844 824 161.5
B 7 202 20815 123.8 844 824 161.5
B 12 111 17770 104.95 844 824 161.5
C 1 16 7482 34.85 817 819 191.2
C 13 61 6243 28.37 817 819 191.2
C 12 4 5653 25.28 817 819 191.2
D 1 52 868677 4452.22 797 777 194.9
D 2 14 509020 2607.23 797 777 194.9
D 8 195 92632 471.2 797 777 194.9

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