ASTROSAT CZTI

Data Quality Report

Orbit 20566

Creation date: 2024-06-27T18:16:54.655515
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/AS1A05_088T03_9000003042_20566cztM0_level2.evt modeM0/AS1A05_088T03_9000003042_20566cztM0_level2_quad_clean.evt
Size (bytes)469,566,720113,808,960
Size447.8 MB 108.5 MB
Events in quadrant A3,213,802772,232
Events in quadrant B3,469,946769,428
Events in quadrant C3,240,281742,338
Events in quadrant D3,868,109722,332

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136911
B0145251
C0136291
D0156961

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6314761.203674%
B6314791.251188%
C6315951.504355%
D63151993.151227%

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 7489 6315 0 0 0.00% 0.00%
B 7489 6315 10 10 0.13% 0.16%
C 7490 6316 0 0 0.00% 0.00%
D 7490 6316 80 80 1.07% 1.27%

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 20522 119.16 827 810 165.4
A 0 226 7230 38.81 827 810 165.4
A 3 137 6465 34.19 827 810 165.4
B 7 220 176209 1143.38 814 794 153.4
B 0 197 26752 169.2 814 794 153.4
B 12 111 18061 112.55 814 794 153.4
C 14 238 123781 671.98 792 798 183.0
C 3 9 15510 80.39 792 798 183.0
C 3 233 12779 65.46 792 798 183.0
D 1 52 437735 2254.95 802 783 193.8
D 7 238 107103 548.68 802 783 193.8
D 13 153 77959 398.28 802 783 193.8

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