ASTROSAT CZTI

Data Quality Report

Orbit 42218

Creation date: 2024-06-27T22:38:38.314706
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_088T51_9000005780_42218cztM0_level2.fits modeM0/AS1A12_088T51_9000005780_42218cztM0_level2_quad_clean.evt
Size (bytes)565,623,360155,796,480
Size539.4 MB 148.6 MB
Events in quadrant A5,297,4871,040,835
Events in quadrant B4,345,1391,073,638
Events in quadrant C4,503,5071,014,845
Events in quadrant D6,038,025915,375

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214832
B0198832
C0195652
D0248432

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01980
B01980
C01980
D01980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9703790.814181%
B9704320.329761%
C970470.072135%
D97042993.081204%

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 12718 9705 62 62 0.49% 0.64%
B 12719 9706 12 12 0.09% 0.12%
C 12719 9706 2 2 0.02% 0.02%
D 12719 9706 279 279 2.19% 2.87%

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 824302 3755.83 1062 1038 219.2
A 9 143 197201 894.92 1062 1038 219.2
A 13 248 58361 261.51 1062 1038 219.2
B 3 112 55238 264.89 1058 1031 204.6
B 15 85 51876 248.47 1058 1031 204.6
B 7 202 37120 176.36 1058 1031 204.6
C 15 214 395575 1633.26 1036 1044 241.6
C 15 159 44344 179.25 1036 1044 241.6
C 3 233 13272 50.62 1036 1044 241.6
D 12 6 962792 3853.87 1019 991 249.6
D 1 52 550420 2201.52 1019 991 249.6
D 2 249 213059 849.74 1019 991 249.6

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