ASTROSAT CZTI

Data Quality Report

Orbit 39591

Creation date: 2024-06-27T22:06:33.090794
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_9000005488_39591cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39591cztM0_level2_quad_clean.evt
Size (bytes)491,693,76086,126,400
Size468.9 MB 82.1 MB
Events in quadrant A3,011,996629,313
Events in quadrant B2,629,321645,657
Events in quadrant C6,980,923482,415
Events in quadrant D5,198,440507,489

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121552
B0110221
C0241331
D0187911

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4898661.347489%
B4898641.306656%
C4898136227.807268%
D489872414.781543%

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 6961 4899 48 48 0.69% 0.98%
B 6961 4899 41 41 0.59% 0.84%
C 6961 4899 1165 1165 16.74% 23.78%
D 6961 4899 622 622 8.94% 12.70%

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 429800 3714.21 569 558 115.6
A 9 143 276974 2391.81 569 558 115.6
A 13 248 86043 739.7 569 558 115.6
B 5 255 258902 2432.71 570 556 106.2
B 5 172 129024 1209.72 570 556 106.2
B 12 111 12714 114.49 570 556 106.2
C 9 187 2796276 23451.98 519 525 119.2
C 15 208 1911494 16030.05 519 525 119.2
C 15 214 202736 1696.23 519 525 119.2
D 13 174 1970535 14983.94 539 524 131.5
D 13 249 508856 3866.38 539 524 131.5
D 5 32 365500 2776.01 539 524 131.5

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