ASTROSAT CZTI

Data Quality Report

Orbit 27847

Creation date: 2024-06-27T19:45:07.878864
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_002T04_9000004022_27847cztM0_level2.evt modeM0/AS1A10_002T04_9000004022_27847cztM0_level2_quad_clean.evt
Size (bytes)481,754,88096,696,000
Size459.4 MB 92.2 MB
Events in quadrant A3,405,817644,525
Events in quadrant B3,451,561636,892
Events in quadrant C3,339,261600,622
Events in quadrant D3,955,887596,744

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142170
B0144250
C0139090
D0159040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6447671.039243%
B6448671.039082%
C6448901.395782%
D64471442.233597%

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 7597 6447 6 6 0.08% 0.09%
B 7598 6448 0 0 0.00% 0.00%
C 7598 6448 0 0 0.00% 0.00%
D 7597 6447 89 89 1.17% 1.38%

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 36181 202.52 874 856 174.4
A 13 254 12045 64.15 874 856 174.4
A 3 137 7822 39.94 874 856 174.4
B 0 190 64635 395.78 852 834 161.2
B 4 80 32899 198.91 852 834 161.2
B 12 111 19403 115.19 852 834 161.2
C 14 238 132401 693.34 814 821 189.8
C 3 233 22298 113.17 814 821 189.8
C 10 22 6686 30.9 814 821 189.8
D 1 52 620154 3216.66 829 810 192.5
D 2 250 85422 439.45 829 810 192.5
D 13 104 78272 402.31 829 810 192.5

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