ASTROSAT CZTI

Data Quality Report

Orbit 39620

Creation date: 2024-06-27T22:06:54.516387
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_39620cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39620cztM0_level2_quad_clean.evt
Size (bytes)411,396,48096,131,520
Size392.3 MB 91.7 MB
Events in quadrant A2,965,591672,626
Events in quadrant B2,505,947687,682
Events in quadrant C6,267,289585,853
Events in quadrant D3,091,204605,730

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120862
B0106751
C0223021
D0126071

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5128150.292512%
B5128120.234009%
C512876514.918097%
D5128931.813573%

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 7190 5129 8 8 0.11% 0.16%
B 7190 5129 4 4 0.06% 0.08%
C 7190 5129 688 688 9.57% 13.41%
D 7190 5129 84 84 1.17% 1.64%

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 456788 3717.89 607 597 122.7
A 15 222 94087 761.93 607 597 122.7
A 0 8 40168 322.5 607 597 122.7
B 5 255 62926 547.79 606 590 113.8
B 5 172 24492 210.04 606 590 113.8
B 15 35 22899 196.04 606 590 113.8
C 9 187 2583404 19531.32 577 582 132.2
C 15 208 1154943 8729.29 577 582 132.2
C 15 214 207269 1562.97 577 582 132.2
D 13 249 385076 2654.09 597 582 144.9
D 2 249 132304 909.25 597 582 144.9
D 12 227 117411 806.45 597 582 144.9

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