ASTROSAT CZTI

Data Quality Report

Orbit 41707

Creation date: 2024-06-27T22:31:51.874823
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/AS1A12_077T12_9000005692_41707cztM0_level2.fits modeM0/AS1A12_077T12_9000005692_41707cztM0_level2_quad_clean.evt
Size (bytes)320,241,60091,699,200
Size305.4 MB 87.5 MB
Events in quadrant A2,862,071633,829
Events in quadrant B2,378,836643,373
Events in quadrant C2,776,122595,995
Events in quadrant D3,444,521550,201

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115822
B0102872
C0111792
D0135722

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5039150.297678%
B503990.178607%
C50391182.341734%
D50392204.365946%

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 7162 5040 3 3 0.04% 0.06%
B 7162 5040 1 1 0.01% 0.02%
C 7162 5040 113 113 1.58% 2.24%
D 7162 5040 214 214 2.99% 4.25%

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 519448 4216.27 599 587 123.1
A 2 79 16512 129.41 599 587 123.1
A 13 248 7887 59.32 599 587 123.1
B 5 255 37277 324.05 586 569 113.3
B 0 190 20858 179.1 586 569 113.3
B 12 111 14040 118.92 586 569 113.3
C 0 10 331834 2482.83 573 578 133.4
C 15 214 206602 1544.19 573 578 133.4
C 13 61 3741 23.71 573 578 133.4
D 2 249 677825 4845.77 575 562 139.8
D 13 249 513659 3671.17 575 562 139.8
D 2 234 25222 176.44 575 562 139.8

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