ASTROSAT CZTI

Data Quality Report

Orbit 47737

Creation date: 2024-07-26T16:29:09.706853
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/AS1T05_213T01_9000006344_47737cztM0_level2.fits modeM0/AS1T05_213T01_9000006344_47737cztM0_level2_quad_clean.evt
Size (bytes)445,991,040110,142,720
Size425.3 MB 105.0 MB
Events in quadrant A6,616,384716,549
Events in quadrant B2,995,935752,596
Events in quadrant C2,988,943735,253
Events in quadrant D3,397,534672,179

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246441
B0135161
C0136741
D0145861

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65742423.681168%
B6575721.095057%
C6575510.775665%
D6575901.368821%

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 7674 6575 22 22 0.29% 0.33%
B 7675 6576 4 4 0.05% 0.06%
C 7675 6576 7 7 0.09% 0.11%
D 7675 6576 26 26 0.34% 0.40%

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 10 83 3687747 24117.85 734 718 152.9
A 9 191 55368 357.48 734 718 152.9
A 13 248 29355 187.32 734 718 152.9
B 0 200 60668 422.11 727 703 142.1
B 0 198 18763 127.13 727 703 142.1
B 12 111 17871 120.85 727 703 142.1
C 14 254 148541 862.89 728 730 171.3
C 13 61 4809 23.81 728 730 171.3
C 12 250 4142 19.92 728 730 171.3
D 2 165 244305 1356.17 734 713 179.6
D 10 181 103170 570.42 734 713 179.6
D 2 249 78814 434.82 734 713 179.6

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