ASTROSAT CZTI

Data Quality Report

Orbit 39374

Creation date: 2024-06-27T22:03:48.428505
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_018T01_9000005470_39374cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39374cztM0_level2_quad_clean.evt
Size (bytes)435,248,64088,908,480
Size415.1 MB 84.8 MB
Events in quadrant A2,732,009639,514
Events in quadrant B3,346,765643,973
Events in quadrant C2,619,538615,548
Events in quadrant D7,013,018433,133

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112633
B0134782
C0109682
D0244382

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5144180.349922%
B51442023.926905%
C5144220.427683%
D5144140027.216174%

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 7237 5145 6 6 0.08% 0.12%
B 7237 5145 115 115 1.59% 2.24%
C 7237 5145 10 10 0.14% 0.19%
D 7237 5144 1193 1193 16.48% 23.19%

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 418274 3539.52 586 577 118.0
A 15 174 13306 107.86 586 577 118.0
A 13 248 8336 65.75 586 577 118.0
B 5 172 575604 5268.25 577 562 109.2
B 5 200 399558 3655.4 577 562 109.2
B 5 255 84150 765.79 577 562 109.2
C 15 214 218236 1658.16 566 571 131.3
C 14 254 124882 946.99 566 571 131.3
C 9 187 55193 416.11 566 571 131.3
D 12 235 4773612 39170.32 495 479 121.9
D 13 249 201463 1649.36 495 479 121.9
D 2 249 128555 1051.05 495 479 121.9

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