ASTROSAT CZTI

Data Quality Report

Orbit 16567

Creation date: 2024-06-27T17:24:29.734301
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/AS1T03_018T01_9000002442_16567cztM0_level2.evt modeM0/AS1T03_018T01_9000002442_16567cztM0_level2_quad_clean.evt
Size (bytes)1,568,157,120231,088,320
Size1.5 GB 220.4 MB
Events in quadrant A11,091,3841,414,434
Events in quadrant B10,398,0721,491,105
Events in quadrant C12,747,5501,456,513
Events in quadrant D11,995,5111,350,051

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0451255
B0425914
C0505054
D0485004

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03820
D03820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186619695.192648%
B186614252.277477%
C186615162.765125%
D1866118369.838701%

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 21017 18665 673 673 3.20% 3.61%
B 21017 18665 72 72 0.34% 0.39%
C 21017 18665 1 1 0.00% 0.01%
D 21017 18666 702 702 3.34% 3.76%

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 15 174 2518880 5658.5 2202 2151 444.8
A 15 223 41732 88.99 2202 2151 444.8
A 11 29 27687 57.41 2202 2151 444.8
B 15 35 704978 1636.83 2244 2186 429.4
B 7 220 214958 495.56 2244 2186 429.4
B 4 216 135660 310.87 2244 2186 429.4
C 3 233 3604734 7162.21 2147 2161 503.0
C 7 247 431858 854.27 2147 2161 503.0
C 14 238 326928 645.66 2147 2161 503.0
D 1 52 1390933 2752.8 2084 2025 504.5
D 2 16 821119 1623.44 2084 2025 504.5
D 7 38 546958 1080.05 2084 2025 504.5

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