ASTROSAT CZTI

Data Quality Report

Orbit 33646

Creation date: 2024-06-27T20:51:03.093847
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/AS1T04_076T01_9000004810_33646cztM0_level2.evt modeM0/AS1T04_076T01_9000004810_33646cztM0_level2_quad_clean.evt
Size (bytes)521,484,48072,066,240
Size497.3 MB 68.7 MB
Events in quadrant A2,737,929453,910
Events in quadrant B4,945,690429,346
Events in quadrant C3,720,415452,626
Events in quadrant D3,984,776429,206

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120533
B0185432
C0150242
D0160352

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A596480.134138%
B596460610.160966%
C5964801.341382%
D59641843.085178%

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 7276 5965 0 0 0.00% 0.00%
B 7275 5964 537 537 7.38% 9.00%
C 7276 5965 66 66 0.91% 1.11%
D 7276 5965 147 147 2.02% 2.46%

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 13 6 19922 137.38 697 682 140.1
A 7 16 10823 72.41 697 682 140.1
A 13 254 10307 68.72 697 682 140.1
B 5 172 1817755 14081.58 671 652 129.0
B 4 170 149567 1154.01 671 652 129.0
B 15 85 82200 631.95 671 652 129.0
C 3 233 291488 1851.24 675 682 157.1
C 15 214 274648 1744.04 675 682 157.1
C 0 10 253551 1609.73 675 682 157.1
D 8 195 607308 3408.22 666 652 178.0
D 13 249 295932 1658.9 666 652 178.0
D 15 0 143806 804.25 666 652 178.0

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