ASTROSAT CZTI

Data Quality Report

Orbit 26349

Creation date: 2024-06-27T19:27:46.558608
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/AS1A09_038T03_9000003800_26349cztM0_level2.evt modeM0/AS1A09_038T03_9000003800_26349cztM0_level2_quad_clean.evt
Size (bytes)385,724,16094,150,080
Size367.9 MB 89.8 MB
Events in quadrant A2,231,858628,778
Events in quadrant B2,316,473642,978
Events in quadrant C3,499,287615,316
Events in quadrant D3,292,096611,655

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100690
B0101760
C0137000
D0131960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A502450.099522%
B502540.079602%
C50251863.701493%
D5024971.930732%

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 5024 5024 0 0 0.00% 0.00%
B 5025 5025 0 0 0.00% 0.00%
C 5025 5025 81 81 1.61% 1.61%
D 5024 5024 87 87 1.73% 1.73%

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 6 16 9064 73.39 576 565 115.8
A 13 254 7945 63.73 576 565 115.8
A 3 137 5369 41.49 576 565 115.8
B 0 219 41712 371.35 575 561 110.8
B 0 230 18909 165.57 575 561 110.8
B 12 111 13249 114.5 575 561 110.8
C 3 233 981624 7639.15 553 558 128.4
C 0 239 267397 2077.76 553 558 128.4
C 14 238 87984 680.75 553 558 128.4
D 1 52 1124012 8479.97 557 544 132.5
D 2 234 24611 181.66 557 544 132.5
D 11 176 17346 126.82 557 544 132.5

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