ASTROSAT CZTI

Data Quality Report

Orbit 20997

Creation date: 2024-06-27T18:22:10.274821
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_072T04_9000003094_20997cztM0_level2.evt modeM0/AS1A05_072T04_9000003094_20997cztM0_level2_quad_clean.evt
Size (bytes)458,988,48094,988,160
Size437.7 MB 90.6 MB
Events in quadrant A3,103,765621,162
Events in quadrant B3,398,006616,371
Events in quadrant C3,242,163595,627
Events in quadrant D3,700,558575,724

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137592
B0145242
C0139892
D0155353

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6711380.566235%
B6711811.206974%
C6711731.087766%
D67101662.473920%

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 7616 6712 0 0 0.00% 0.00%
B 7616 6712 31 31 0.41% 0.46%
C 7616 6712 3 3 0.04% 0.04%
D 7615 6711 115 115 1.51% 1.71%

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 0 226 7043 38.36 807 788 163.1
A 3 137 6454 34.74 807 788 163.1
A 12 194 5795 30.7 807 788 163.1
B 3 64 74092 479.99 802 780 152.7
B 7 220 55682 359.45 802 780 152.7
B 4 216 32502 207.69 802 780 152.7
C 14 238 121589 656.54 779 783 184.0
C 9 54 59630 319.81 779 783 184.0
C 3 233 11588 58.72 779 783 184.0
D 1 52 442575 2360.55 781 759 187.2
D 7 38 117154 621.88 781 759 187.2
D 2 234 31913 166.45 781 759 187.2

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