ASTROSAT CZTI

Data Quality Report

Orbit 15821

Creation date: 2024-06-27T17:13:59.453936
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_143T01_9000002344_15821cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15821cztM0_level2_quad_clean.evt
Size (bytes)480,864,960105,134,400
Size458.6 MB 100.3 MB
Events in quadrant A3,413,375678,748
Events in quadrant B3,735,957703,064
Events in quadrant C3,555,659668,626
Events in quadrant D3,391,616655,099

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145283
B0154572
C0147792
D0146432

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6872520.756694%
B68721211.760768%
C6872731.062282%
D6872200.291036%

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 9528 6875 0 0 0.00% 0.00%
B 9528 6875 10 10 0.10% 0.15%
C 9528 6875 5 5 0.05% 0.07%
D 9528 6875 4 4 0.04% 0.06%

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 9 143 15591 82.55 882 863 178.4
A 15 239 10118 51.88 882 863 178.4
A 0 226 7794 38.85 882 863 178.4
B 4 173 87606 514.41 891 869 168.6
B 0 189 65845 385.35 891 869 168.6
B 4 48 24056 137.52 891 869 168.6
C 14 238 131880 654.03 858 868 200.3
C 10 22 48218 236.38 858 868 200.3
C 3 233 9483 43.01 858 868 200.3
D 1 52 42853 195.15 857 837 215.3
D 7 223 25940 116.59 857 837 215.3
D 2 234 25726 115.6 857 837 215.3

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