ASTROSAT CZTI

Data Quality Report

Orbit 20160122_G02_048T01_9000000286_level2

Creation date: 2025-10-25T23:26:06.743707
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/AS1G02_048T01_9000000286cztM0_level2.fits modeM0/AS1G02_048T01_9000000286cztM0_level2_quad_clean.evt
Size (bytes)482,636,160461,983,680
Size460.3 MB 440.6 MB
Events in quadrant A2,787,7142,611,551
Events in quadrant B2,796,1702,643,248
Events in quadrant C2,774,2702,559,948
Events in quadrant D2,400,9142,318,313

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02457540
B02465970
C02337680
D02370610

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B060
C060
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011280
B011280
C011280
D011280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A562401980.352063%
B562341740.309421%
C562381950.346741%
D562404310.766358%

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 63478 56239 0 0 0.00% 0.00%
B 63478 56234 0 0 0.00% 0.00%
C 63478 56237 0 0 0.00% 0.00%
D 63478 56239 0 0 0.00% 0.00%

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 29 2549 10.79 724 674 173.8
A 7 110 2525 10.65 724 674 173.8
A 0 30 1978 7.5 724 674 173.8
B 2 9 2133 10.53 736 697 136.4
B 10 225 1839 8.37 736 697 136.4
B 5 225 1780 7.94 736 697 136.4
C 12 241 1902 6.72 733 676 182.4
C 3 235 1807 6.2 733 676 182.4
C 9 242 1786 6.09 733 676 182.4
D 1 19 1681 6.41 685 628 164.2
D 6 231 1675 6.38 685 628 164.2
D 6 44 1665 6.32 685 628 164.2

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