ASTROSAT CZTI

Data Quality Report

Orbit 46749

Creation date: 2024-06-27T23:27:09.874816
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_092T17_9000006262_46749cztM0_level2.fits modeM0/AS1A13_092T17_9000006262_46749cztM0_level2_quad_clean.evt
Size (bytes)532,143,360103,717,440
Size507.5 MB 98.9 MB
Events in quadrant A6,614,737692,128
Events in quadrant B5,658,217701,012
Events in quadrant C2,963,459698,949
Events in quadrant D3,981,940615,727

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02383025
B02118324
C01327421
D01609725

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62022483.998710%
B62004236.822581%
C6195380.613398%
D61972103.388736%

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 7433 6207 126 126 1.70% 2.03%
B 7433 6207 310 310 4.17% 4.99%
C 7433 6204 27 27 0.36% 0.44%
D 7432 6205 185 185 2.49% 2.98%

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 3349628 23169.87 695 680 144.5
A 9 191 223240 1539.79 695 680 144.5
A 13 248 152833 1052.68 695 680 144.5
B 3 112 2475857 18096.67 696 675 136.8
B 15 201 96876 703.35 696 675 136.8
B 5 255 91710 665.58 696 675 136.8
C 14 254 250909 1529.27 690 695 163.6
C 3 233 8535 47.92 690 695 163.6
C 9 237 7524 41.74 690 695 163.6
D 13 249 445536 2632.07 672 653 169.0
D 13 138 344279 2033.0 672 653 169.0
D 12 233 240329 1418.0 672 653 169.0

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