ASTROSAT CZTI

Data Quality Report

Orbit 01031

Creation date: 2024-06-27T14:06:25.806267
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/AS1P01_998T02_9000000190_01031cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01031cztM0_level2_quad_clean.evt
Size (bytes)1,215,014,400120,173,760
Size1.1 GB 114.6 MB
Events in quadrant A8,518,157804,165
Events in quadrant B8,767,015807,076
Events in quadrant C11,329,486751,607
Events in quadrant D7,706,991776,675

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0304052
B0311063
C0387822
D0280402

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7173210.292765%
B7172260.362521%
C71725617.822086%
D717290.125488%

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 7563 7175 277 277 3.66% 3.86%
B 7562 7174 295 295 3.90% 4.11%
C 7562 7174 1755 1755 23.21% 24.46%
D 7562 7174 172 172 2.27% 2.40%

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 4 32 138396 259.02 2178 2186 525.9
A 12 189 18322 30.68 2178 2186 525.9
A 11 79 8031 11.11 2178 2186 525.9
B 8 234 41389 73.96 2252 2260 529.1
B 0 220 33503 59.05 2252 2260 529.1
B 15 22 30144 52.7 2252 2260 529.1
C 8 208 2920985 5149.39 2037 2109 566.8
C 15 241 359552 630.59 2037 2109 566.8
C 3 79 40686 68.06 2037 2109 566.8
D 1 83 41262 62.38 2036 2109 627.6
D 9 64 21915 31.56 2036 2109 627.6
D 13 73 17846 25.07 2036 2109 627.6

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