ASTROSAT CZTI

Data Quality Report

Orbit 26381

Creation date: 2024-06-27T19:28:21.272724
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/AS1A09_088T01_9000003812_26381cztM0_level2.evt modeM0/AS1A09_088T01_9000003812_26381cztM0_level2_quad_clean.evt
Size (bytes)882,426,240107,115,840
Size841.5 MB 102.2 MB
Events in quadrant A3,800,436729,422
Events in quadrant B3,436,962753,553
Events in quadrant C10,173,111612,025
Events in quadrant D8,816,437634,757

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162740
B0150810
C0353060
D0311820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73623284.455311%
B73631872.539726%
C7363282838.408258%
D7363184425.044140%

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 7502 7363 120 120 1.60% 1.63%
B 7503 7364 0 0 0.00% 0.00%
C 7503 7364 1695 1695 22.59% 23.02%
D 7503 7364 1402 1402 18.69% 19.04%

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 0 13 471998 2699.69 862 842 174.5
A 13 254 11674 62.07 862 842 174.5
A 3 137 8212 42.23 862 842 174.5
B 0 230 29487 173.75 869 846 164.8
B 12 111 20216 117.51 869 846 164.8
B 11 111 18514 107.18 869 846 164.8
C 3 233 7172655 41481.69 732 736 172.9
C 14 238 112788 648.1 732 736 172.9
C 2 16 16680 92.22 732 736 172.9
D 1 52 3658129 19905.64 769 748 183.7
D 7 80 2047974 11142.22 769 748 183.7
D 11 176 143594 777.45 769 748 183.7

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