ASTROSAT CZTI

Data Quality Report

Orbit 46371

Creation date: 2024-06-27T23:22:19.832346
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_068T02_9000006200_46371cztM0_level2.fits modeM0/AS1A13_068T02_9000006200_46371cztM0_level2_quad_clean.evt
Size (bytes)472,155,840106,727,040
Size450.3 MB 101.8 MB
Events in quadrant A5,718,997720,145
Events in quadrant B3,088,870752,700
Events in quadrant C4,588,130671,687
Events in quadrant D3,593,917648,564

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206911
B0133271
C0179191
D0147251

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62841622.577976%
B6285961.527446%
C62855268.369133%
D62841091.734564%

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 7424 6285 3 3 0.04% 0.05%
B 7425 6286 17 17 0.23% 0.27%
C 7425 6286 387 387 5.21% 6.16%
D 7424 6285 59 59 0.79% 0.94%

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 2830082 18488.4 739 725 153.0
A 13 248 15444 96.18 739 725 153.0
A 13 254 10662 64.93 739 725 153.0
B 0 190 51440 351.56 738 717 144.3
B 5 172 43080 293.62 738 717 144.3
B 5 32 36423 247.48 738 717 144.3
C 14 254 1435666 8741.04 701 706 164.2
C 2 14 290280 1763.94 701 706 164.2
C 9 69 103658 627.13 701 706 164.2
D 13 249 263511 1462.74 719 696 179.7
D 1 52 251090 1393.61 719 696 179.7
D 2 249 133988 741.86 719 696 179.7

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