ASTROSAT CZTI

Data Quality Report

Orbit 40983

Creation date: 2024-06-27T22:22:59.415508
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_066T01_9000005584_40983cztM0_level2.fits modeM0/AS1A12_066T01_9000005584_40983cztM0_level2_quad_clean.evt
Size (bytes)312,851,52085,348,800
Size298.4 MB 81.4 MB
Events in quadrant A2,708,623596,391
Events in quadrant B2,519,976598,755
Events in quadrant C2,621,595554,004
Events in quadrant D3,352,780495,384

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109933
B0107042
C0106262
D0132352

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4844100.206441%
B4844480.990917%
C4844961.981833%
D48443707.638315%

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 6967 4845 6 6 0.09% 0.12%
B 6967 4845 29 29 0.42% 0.60%
C 6967 4845 98 98 1.41% 2.02%
D 6967 4844 374 374 5.37% 7.72%

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 475057 4101.23 567 557 115.7
A 12 189 33184 282.0 567 557 115.7
A 13 254 7527 60.24 567 557 115.7
B 5 255 225925 2067.05 562 546 109.0
B 0 229 79876 727.57 562 546 109.0
B 12 111 13408 117.96 562 546 109.0
C 0 10 280252 2220.22 542 545 126.0
C 15 214 208159 1647.97 542 545 126.0
C 12 249 13619 103.78 542 545 126.0
D 2 249 855020 6545.3 533 519 130.6
D 13 249 167871 1281.88 533 519 130.6
D 5 32 130558 996.07 533 519 130.6

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