ASTROSAT CZTI

Data Quality Report

Orbit 24219

Creation date: 2024-06-27T19:03:36.408895
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_010T12_9000003582_24219cztM0_level2.evt modeM0/AS1A07_010T12_9000003582_24219cztM0_level2_quad_clean.evt
Size (bytes)467,844,480111,588,480
Size446.2 MB 106.4 MB
Events in quadrant A3,153,624743,086
Events in quadrant B3,560,916746,380
Events in quadrant C3,345,308725,360
Events in quadrant D3,666,133710,403

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133781
B0145661
C0137271
D0149711

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6515841.289332%
B65162333.575813%
C65161211.856967%
D65161151.764886%

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 7225 6515 0 0 0.00% 0.00%
B 7226 6516 74 74 1.02% 1.14%
C 7226 6516 0 0 0.00% 0.00%
D 7226 6517 52 52 0.72% 0.80%

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 3 1 13217 75.8 812 795 163.9
A 13 254 10583 59.72 812 795 163.9
A 0 23 10567 59.63 812 795 163.9
B 12 17 262468 1754.1 797 778 149.2
B 0 245 98051 652.02 797 778 149.2
B 0 190 21937 141.83 797 778 149.2
C 7 247 157659 872.02 775 781 179.9
C 14 238 124354 686.89 775 781 179.9
C 2 16 38351 208.84 775 781 179.9
D 7 238 429258 2240.32 791 767 191.3
D 1 52 108812 564.9 791 767 191.3
D 8 195 73603 380.82 791 767 191.3

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