ASTROSAT CZTI

Data Quality Report

Orbit 47121

Creation date: 2024-06-27T23:31:57.897449
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/AS1C09_003T01_9000006298_47121cztM0_level2.fits modeM0/AS1C09_003T01_9000006298_47121cztM0_level2_quad_clean.evt
Size (bytes)1,401,338,880294,353,280
Size1.3 GB 280.7 MB
Events in quadrant A19,715,9241,924,288
Events in quadrant B9,830,5592,028,067
Events in quadrant C8,889,8031,922,613
Events in quadrant D11,962,7671,721,584

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0712463
B0425353
C0406993
D0492644

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03880
B03880
C03880
D03880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1908212516.555917%
B190823331.745100%
C190832651.388671%
D190828914.669322%

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 20542 19084 634 634 3.09% 3.32%
B 20542 19084 50 50 0.24% 0.26%
C 20543 19086 86 86 0.42% 0.45%
D 20542 19084 592 592 2.88% 3.10%

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 10210259 23891.49 2069 2023 427.3
A 0 247 1226763 2866.4 2069 2023 427.3
A 0 226 87979 201.17 2069 2023 427.3
B 4 21 661742 1617.69 2095 2029 407.8
B 0 190 261468 636.17 2095 2029 407.8
B 5 32 129840 313.41 2095 2029 407.8
C 14 254 583197 1206.48 2056 2064 481.7
C 15 208 101345 206.12 2056 2064 481.7
C 3 233 66230 133.21 2056 2064 481.7
D 1 47 1003226 1957.67 2037 1967 511.5
D 2 249 991413 1934.57 2037 1967 511.5
D 12 233 642531 1252.43 2037 1967 511.5

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