ASTROSAT CZTI

Data Quality Report

Orbit 40749

Creation date: 2024-06-27T22:19:57.722120
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_068T02_9000005564_40749cztM0_level2.fits modeM0/AS1A12_068T02_9000005564_40749cztM0_level2_quad_clean.evt
Size (bytes)409,288,32089,400,960
Size390.3 MB 85.3 MB
Events in quadrant A2,795,428626,786
Events in quadrant B2,632,447645,126
Events in quadrant C6,290,456536,013
Events in quadrant D3,030,788537,291

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113853
B0111332
C0222712
D0125582

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A515790.174520%
B5157881.706418%
C515797618.925732%
D51573897.543145%

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 9013 5159 3 3 0.03% 0.06%
B 9013 5158 76 76 0.84% 1.47%
C 9013 5159 1056 1056 11.72% 20.47%
D 9012 5158 48 48 0.53% 0.93%

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 463602 3824.72 588 578 121.1
A 12 189 21516 172.95 588 578 121.1
A 6 10 18191 145.49 588 578 121.1
B 0 229 196037 1781.96 582 567 109.7
B 4 171 89075 806.86 582 567 109.7
B 5 255 35472 318.2 582 567 109.7
C 9 187 3935692 31823.59 537 542 123.7
C 15 214 207981 1677.56 537 542 123.7
C 0 10 40536 323.43 537 542 123.7
D 2 249 247982 1813.12 550 535 136.5
D 13 249 193984 1417.46 550 535 136.5
D 12 128 181328 1324.72 550 535 136.5

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