ASTROSAT CZTI

Data Quality Report

Orbit 44691

Creation date: 2024-06-27T23:05:20.605078
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/AS1A13_073T04_9000006010_44691cztM0_level2.fits modeM0/AS1A13_073T04_9000006010_44691cztM0_level2_quad_clean.evt
Size (bytes)483,246,720106,899,840
Size460.9 MB 101.9 MB
Events in quadrant A6,456,323686,696
Events in quadrant B3,043,831755,825
Events in quadrant C2,888,197725,649
Events in quadrant D5,017,943635,312

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0238982
B0131403
C0128702
D0192602

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62125008.048938%
B6211320.515215%
C6211230.370311%
D62113455.554661%

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 7477 6213 309 309 4.13% 4.97%
B 7476 6212 7 7 0.09% 0.11%
C 7476 6212 8 8 0.11% 0.13%
D 7476 6212 284 284 3.80% 4.57%

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 1877803 12950.23 698 683 144.9
A 15 223 853152 5881.17 698 683 144.9
A 12 227 502771 3463.9 698 683 144.9
B 0 219 34157 238.04 719 695 140.6
B 0 155 33931 236.43 719 695 140.6
B 0 190 31706 220.61 719 695 140.6
C 3 233 33996 200.23 710 715 166.2
C 2 14 30531 179.38 710 715 166.2
C 14 254 29600 173.78 710 715 166.2
D 11 241 991623 5784.96 688 669 171.3
D 1 52 362843 2114.29 688 669 171.3
D 2 249 337847 1968.37 688 669 171.3

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