ASTROSAT CZTI

Data Quality Report

Orbit 41962

Creation date: 2024-06-27T22:35:01.554024
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_025T15_9000005726_41962cztM0_level2.fits modeM0/AS1A12_025T15_9000005726_41962cztM0_level2_quad_clean.evt
Size (bytes)335,373,12091,042,560
Size319.8 MB 86.8 MB
Events in quadrant A3,463,601605,071
Events in quadrant B2,678,962621,547
Events in quadrant C2,593,095592,806
Events in quadrant D3,239,813542,855

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139902
B0119432
C0113263
D0137072

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5635160.283940%
B5635270.479148%
C563440.070998%
D5634981.739439%

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 7248 5636 6 6 0.08% 0.11%
B 7248 5636 16 16 0.22% 0.28%
C 7247 5635 0 0 0.00% 0.00%
D 7247 5635 82 82 1.13% 1.46%

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 571354 4538.71 612 597 125.8
A 2 79 500554 3975.71 612 597 125.8
A 13 6 18003 138.41 612 597 125.8
B 5 255 157141 1305.57 611 595 119.9
B 0 190 55082 454.41 611 595 119.9
B 0 156 42895 352.78 611 595 119.9
C 15 214 246856 1728.2 599 602 142.5
C 8 79 4579 27.91 599 602 142.5
C 3 233 4099 24.54 599 602 142.5
D 13 249 474802 3221.32 591 573 147.2
D 5 222 107864 728.8 591 573 147.2
D 1 52 95203 642.8 591 573 147.2

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