ASTROSAT CZTI

Data Quality Report

Orbit 39766

Creation date: 2024-06-27T22:08:44.934077
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_022T01_9000005494_39766cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39766cztM0_level2_quad_clean.evt
Size (bytes)421,732,80091,880,640
Size402.2 MB 87.6 MB
Events in quadrant A3,285,011658,163
Events in quadrant B2,631,835675,747
Events in quadrant C3,067,650630,492
Events in quadrant D6,228,379459,183

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128912
B0109051
C0123421
D0219581

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51211202.343292%
B5121290.566296%
C5121170.331966%
D5121132425.854325%

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 7274 5121 65 65 0.89% 1.27%
B 7274 5122 20 20 0.27% 0.39%
C 7274 5122 12 12 0.16% 0.23%
D 7274 5122 1155 1155 15.88% 22.55%

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 461983 3757.24 611 599 122.8
A 13 248 255823 2078.39 611 599 122.8
A 13 210 108899 881.93 611 599 122.8
B 5 172 88270 763.48 607 591 114.8
B 5 255 66251 571.75 607 591 114.8
B 0 230 40018 343.32 607 591 114.8
C 15 208 410952 3000.87 596 601 136.7
C 15 214 211910 1545.29 596 601 136.7
C 3 233 95468 693.76 596 601 136.7
D 12 233 3491679 26488.14 535 518 131.8
D 12 227 317244 2403.06 535 518 131.8
D 13 249 125018 944.61 535 518 131.8

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