ASTROSAT CZTI

Data Quality Report

Orbit 23284

Creation date: 2024-06-27T18:52:21.280838
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/AS1C05_012T03_9000003442_23284cztM0_level2.evt modeM0/AS1C05_012T03_9000003442_23284cztM0_level2_quad_clean.evt
Size (bytes)491,175,360136,728,000
Size468.4 MB 130.4 MB
Events in quadrant A3,398,205922,897
Events in quadrant B3,441,627941,896
Events in quadrant C3,446,937895,480
Events in quadrant D4,093,084873,508

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149512
B0150212
C0150312
D0172822

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7299520.712426%
B7299761.041239%
C7299731.000137%
D72981321.808715%

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 8929 7302 0 0 0.00% 0.00%
B 8929 7302 2 2 0.02% 0.03%
C 8929 7302 0 0 0.00% 0.00%
D 8928 7301 66 66 0.74% 0.90%

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 6 16 52398 294.79 867 849 174.9
A 13 254 11252 59.49 867 849 174.9
A 3 137 7864 40.12 867 849 174.9
B 5 172 27612 162.05 863 841 165.2
B 12 111 20479 118.87 863 841 165.2
B 4 173 19531 113.14 863 841 165.2
C 14 238 132060 684.01 825 833 191.9
C 10 9 52700 270.35 825 833 191.9
C 0 10 26375 133.14 825 833 191.9
D 7 238 432207 2153.85 832 808 200.3
D 1 52 315266 1570.0 832 808 200.3
D 13 249 92386 457.22 832 808 200.3

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