ASTROSAT CZTI

Data Quality Report

Orbit 37640

Creation date: 2024-06-27T21:42:32.180886
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/AS1A11_075T01_9000005342_37640cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37640cztM0_level2_quad_clean.evt
Size (bytes)452,073,60068,567,040
Size431.1 MB 65.4 MB
Events in quadrant A4,592,655408,741
Events in quadrant B2,731,638432,101
Events in quadrant C2,684,788438,942
Events in quadrant D3,308,541411,517

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174003
B0119092
C0113842
D0137202

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54913536.428702%
B5491701.274813%
C5491150.273174%
D54911031.875797%

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 9107 5493 337 337 3.70% 6.14%
B 9107 5491 42 42 0.46% 0.76%
C 9107 5491 7 7 0.08% 0.13%
D 9107 5491 84 84 0.92% 1.53%

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 15 222 1662588 13848.44 593 582 120.0
A 10 83 311037 2586.83 593 582 120.0
A 6 10 279346 2322.76 593 582 120.0
B 5 172 193132 1628.02 610 592 118.3
B 0 230 36409 302.85 610 592 118.3
B 4 232 32490 269.71 610 592 118.3
C 15 214 254237 1825.5 599 602 138.9
C 0 10 64538 460.17 599 602 138.9
C 14 254 27176 191.26 599 602 138.9
D 2 249 382930 2647.8 590 573 144.4
D 2 250 327051 2260.84 590 573 144.4
D 13 249 127536 879.21 590 573 144.4

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