ASTROSAT CZTI

Data Quality Report

Orbit 46955

Creation date: 2024-06-27T23:29:53.327273
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_077T01_9000006286_46955cztM0_level2.fits modeM0/AS1A13_077T01_9000006286_46955cztM0_level2_quad_clean.evt
Size (bytes)611,112,96099,642,240
Size582.8 MB 95.0 MB
Events in quadrant A6,587,775688,757
Events in quadrant B8,497,571560,130
Events in quadrant C3,076,049688,913
Events in quadrant D3,961,207629,844

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0239291
B0296801
C0138571
D0161571

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64412503.881385%
B6441175827.293898%
C6442811.257373%
D64411672.592765%

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 7406 6442 30 30 0.41% 0.47%
B 7406 6441 1589 1589 21.46% 24.67%
C 7407 6442 52 52 0.70% 0.81%
D 7406 6441 154 154 2.08% 2.39%

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 3743126 24595.3 725 709 152.2
A 0 243 14705 91.98 725 709 152.2
A 13 6 13740 85.64 725 709 152.2
B 3 112 5011439 37103.59 676 656 135.0
B 4 171 304044 2246.51 676 656 135.0
B 5 32 206312 1522.83 676 656 135.0
C 1 3 189124 1110.14 716 721 169.7
C 14 254 47144 273.54 716 721 169.7
C 3 233 24847 142.16 716 721 169.7
D 1 52 336358 1836.28 715 694 182.8
D 5 171 214029 1167.07 715 694 182.8
D 11 224 148003 805.87 715 694 182.8

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