ASTROSAT CZTI

Data Quality Report

Orbit 31178

Creation date: 2024-06-27T20:24:20.539639
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/AS1A10_058T02_9000004510_31178cztM0_level2.evt modeM0/AS1A10_058T02_9000004510_31178cztM0_level2_quad_clean.evt
Size (bytes)632,842,56074,894,400
Size603.5 MB 71.4 MB
Events in quadrant A3,711,631469,828
Events in quadrant B5,857,018459,211
Events in quadrant C3,834,681439,459
Events in quadrant D5,318,058440,452

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151362
B0216622
C0153922
D0210192

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6577951.444428%
B65772984.530941%
C65771752.660788%
D6577991.505246%

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 7832 6578 0 0 0.00% 0.00%
B 7832 6578 65 65 0.83% 0.99%
C 7832 6578 14 14 0.18% 0.21%
D 7832 6578 15 15 0.19% 0.23%

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 13 254 11613 56.18 962 948 189.8
A 3 137 8694 40.8 962 948 189.8
A 0 226 8216 38.28 962 948 189.8
B 6 159 1701634 9858.34 923 905 172.5
B 12 18 280535 1620.89 923 905 172.5
B 4 80 207088 1195.15 923 905 172.5
C 14 238 148058 710.6 896 906 207.1
C 0 10 111083 532.05 896 906 207.1
C 10 22 57001 270.88 896 906 207.1
D 8 195 1754525 8212.24 921 900 213.5
D 2 250 33946 154.75 921 900 213.5
D 2 234 23501 105.84 921 900 213.5

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