ASTROSAT CZTI

Data Quality Report

Orbit 15157

Creation date: 2024-06-27T17:04:32.969146
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_218T08_9000002236_15157cztM0_level2.evt modeM0/AS1A04_218T08_9000002236_15157cztM0_level2_quad_clean.evt
Size (bytes)495,259,200103,158,720
Size472.3 MB 98.4 MB
Events in quadrant A4,052,389658,435
Events in quadrant B3,521,506672,986
Events in quadrant C3,318,383672,941
Events in quadrant D3,634,119634,899

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169773
B0149002
C0143522
D0155402

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6967761.090857%
B6967901.291804%
C6967610.875556%
D69671091.564518%

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 9078 6971 12 12 0.13% 0.17%
B 9078 6971 4 4 0.04% 0.06%
C 9078 6970 0 0 0.00% 0.00%
D 9078 6971 64 64 0.71% 0.92%

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 15 239 842148 5035.79 831 813 167.1
A 12 189 14580 82.4 831 813 167.1
A 0 226 7234 38.43 831 813 167.1
B 3 64 176642 1112.34 841 818 158.1
B 4 48 27167 166.69 841 818 158.1
B 12 111 18741 113.39 841 818 158.1
C 3 233 100886 528.8 824 826 189.2
C 13 61 5884 26.73 824 826 189.2
C 14 234 3708 15.23 824 826 189.2
D 10 70 333844 1691.12 812 787 196.9
D 2 16 77865 391.37 812 787 196.9
D 2 33 71197 357.51 812 787 196.9

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