ASTROSAT CZTI

Data Quality Report

Orbit 39025

Creation date: 2024-06-27T21:59:30.360727
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/AS1C07_001T02_9000005426_39025cztM0_level2.fits modeM0/AS1C07_001T02_9000005426_39025cztM0_level2_quad_clean.evt
Size (bytes)341,035,20093,165,120
Size325.2 MB 88.8 MB
Events in quadrant A4,187,136615,212
Events in quadrant B2,498,402650,914
Events in quadrant C2,526,862621,730
Events in quadrant D3,010,413572,782

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156992
B0108631
C0104731
D0122371

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51493927.613129%
B5149260.504952%
C514950.097106%
D51491062.058652%

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 7091 5149 437 437 6.16% 8.49%
B 7091 5148 10 10 0.14% 0.19%
C 7091 5148 0 0 0.00% 0.00%
D 7091 5148 106 106 1.49% 2.06%

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 12 227 1416952 11950.97 590 579 118.5
A 10 83 406987 3429.16 590 579 118.5
A 13 248 36987 307.2 590 579 118.5
B 5 172 111518 997.73 591 575 111.2
B 15 85 52069 463.1 591 575 111.2
B 12 111 13323 114.65 591 575 111.2
C 15 214 217117 1610.32 586 591 134.5
C 1 128 14771 105.46 586 591 134.5
C 0 10 4775 31.12 586 591 134.5
D 12 227 501784 3496.42 588 572 143.4
D 1 47 78542 543.91 588 572 143.4
D 12 235 77101 533.86 588 572 143.4

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