ASTROSAT CZTI

Data Quality Report

Orbit 17961

Creation date: 2024-06-27T17:43:10.353276
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/AS1A05_019T01_9000002672_17961cztM0_level2.evt modeM0/AS1A05_019T01_9000002672_17961cztM0_level2_quad_clean.evt
Size (bytes)435,182,400102,447,360
Size415.0 MB 97.7 MB
Events in quadrant A3,068,728692,583
Events in quadrant B3,428,536687,259
Events in quadrant C3,040,932649,392
Events in quadrant D3,230,662651,651

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130150
B0140910
C0127980
D0135040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6044470.777631%
B6045911.505376%
C6045550.909843%
D6045651.075269%

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 7299 6045 1 1 0.01% 0.02%
B 7300 6046 38 38 0.52% 0.63%
C 7300 6046 0 0 0.00% 0.00%
D 7300 6046 27 27 0.37% 0.45%

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 14 237 57080 361.74 779 764 155.7
A 3 15 12631 76.23 779 764 155.7
A 0 226 6990 39.99 779 764 155.7
B 7 220 315671 2177.92 766 749 144.6
B 5 172 21552 143.87 766 749 144.6
B 3 64 21083 140.62 766 749 144.6
C 14 238 114389 667.87 733 738 170.2
C 3 233 48200 278.91 733 738 170.2
C 0 207 8569 46.02 733 738 170.2
D 7 38 102764 562.7 756 738 181.3
D 10 70 62497 340.62 756 738 181.3
D 5 222 46517 252.48 756 738 181.3

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