ASTROSAT CZTI

Data Quality Report

Orbit 46678

Creation date: 2024-06-27T23:26:23.216875
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/AS1A13_092T19_9000006252_46678cztM0_level2.fits modeM0/AS1A13_092T19_9000006252_46678cztM0_level2_quad_clean.evt
Size (bytes)470,557,440105,897,600
Size448.8 MB 101.0 MB
Events in quadrant A6,267,341693,312
Events in quadrant B3,422,580735,828
Events in quadrant C2,868,083715,825
Events in quadrant D4,359,981611,555

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0226892
B0144852
C0132042
D0175362

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64472594.017372%
B64481191.845533%
C6448220.341191%
D64484276.622208%

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 7592 6448 107 107 1.41% 1.66%
B 7593 6449 7 7 0.09% 0.11%
C 7593 6449 0 0 0.00% 0.00%
D 7593 6449 318 318 4.19% 4.93%

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 3417720 23029.43 715 700 148.4
A 9 191 18445 119.59 715 700 148.4
A 0 243 16698 107.82 715 700 148.4
B 0 189 278044 1940.94 728 705 142.9
B 4 171 93960 652.64 728 705 142.9
B 0 198 44271 304.89 728 705 142.9
C 9 54 37757 218.72 716 719 169.3
C 14 254 17094 96.7 716 719 169.3
C 1 3 8905 48.34 716 719 169.3
D 1 52 436291 2548.01 681 662 171.0
D 5 171 396627 2316.01 681 662 171.0
D 12 238 297835 1738.18 681 662 171.0

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