ASTROSAT CZTI

Data Quality Report

Orbit 39827

Creation date: 2024-06-27T22:09:22.947402
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_022T01_9000005498_39827cztM0_level2.fits modeM0/AS1A12_022T01_9000005498_39827cztM0_level2_quad_clean.evt
Size (bytes)627,108,48076,556,160
Size598.1 MB 73.0 MB
Events in quadrant A3,542,652618,928
Events in quadrant B3,379,017615,309
Events in quadrant C12,709,245148,619
Events in quadrant D3,149,809546,092

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140623
B0138772
C0415642
D0134472

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5563851.527953%
B55631763.163761%
C5563445780.118641%
D55631502.696387%

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 7116 5564 73 73 1.03% 1.31%
B 7116 5564 107 107 1.50% 1.92%
C 7116 5564 4145 4145 58.25% 74.50%
D 7116 5564 123 123 1.73% 2.21%

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 14 235 558405 4577.5 601 590 121.9
A 10 83 486608 3988.32 601 590 121.9
A 13 248 116080 947.73 601 590 121.9
B 4 171 317264 2774.34 592 577 114.1
B 5 172 238310 2082.66 592 577 114.1
B 0 229 178594 1559.52 592 577 114.1
C 9 187 9547830 113473.6 359 362 84.1
C 15 208 1439673 17106.5 359 362 84.1
C 15 214 150518 1784.63 359 362 84.1
D 2 249 336438 2327.56 584 566 144.3
D 12 227 269390 1862.92 584 566 144.3
D 13 249 108267 746.36 584 566 144.3

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