ASTROSAT CZTI

Data Quality Report

Orbit 41617

Creation date: 2024-06-27T22:30:45.363050
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_035T02_9000005680_41617cztM0_level2.fits modeM0/AS1A12_035T02_9000005680_41617cztM0_level2_quad_clean.evt
Size (bytes)601,669,44078,816,960
Size573.8 MB 75.2 MB
Events in quadrant A3,010,090638,489
Events in quadrant B3,004,041636,929
Events in quadrant C3,004,957606,667
Events in quadrant D12,829,572123,481

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121681
B0124791
C0122134
D0418131

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5436170.312730%
B54361723.164091%
C54361242.281089%
D5436456183.903606%

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 7289 5437 4 4 0.05% 0.07%
B 7289 5437 113 113 1.55% 2.08%
C 7289 5437 112 112 1.54% 2.06%
D 7289 5436 4264 4264 58.50% 78.44%

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 530752 4123.41 625 611 128.6
A 2 79 21188 160.05 625 611 128.6
A 13 248 18501 139.15 625 611 128.6
B 0 186 518294 4435.04 613 598 116.7
B 0 189 27453 230.06 613 598 116.7
B 5 255 22683 189.2 613 598 116.7
C 0 10 354464 2541.46 595 598 139.2
C 15 214 238355 1707.57 595 598 139.2
C 14 254 63711 453.28 595 598 139.2
D 12 79 10423201 101886.13 421 409 102.3
D 13 249 369873 3611.63 421 409 102.3
D 2 249 278188 2715.38 421 409 102.3

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