ASTROSAT CZTI

Data Quality Report

Orbit 41832

Creation date: 2024-06-27T22:33:22.587595
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/AS1A12_099T04_9000005708_41832cztM0_level2.fits modeM0/AS1A12_099T04_9000005708_41832cztM0_level2_quad_clean.evt
Size (bytes)1,236,651,840258,724,800
Size1.2 GB 246.7 MB
Events in quadrant A14,152,3961,552,570
Events in quadrant B7,802,4851,854,485
Events in quadrant C9,440,1831,712,845
Events in quadrant D13,078,3601,551,579

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0526975
B0349654
C0386264
D0506984

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03480
B03480
C03480
D03480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0590
B0590
C0590
D0590

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16837256715.246184%
B168371050.623627%
C168375113.034982%
D168379545.666093%

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 22835 16841 1941 1941 8.50% 11.53%
B 22835 16841 68 68 0.30% 0.40%
C 22835 16841 502 502 2.20% 2.98%
D 22835 16841 881 881 3.86% 5.23%

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 14 24 6172629 18068.75 1678 1644 341.5
A 10 83 1365417 3993.15 1678 1644 341.5
A 2 79 99312 285.97 1678 1644 341.5
B 5 32 163121 459.24 1837 1784 351.3
B 0 186 96117 268.52 1837 1784 351.3
B 0 245 75138 208.8 1837 1784 351.3
C 0 10 1814249 4436.63 1772 1781 408.5
C 15 214 665200 1623.94 1772 1781 408.5
C 15 111 14784 31.83 1772 1781 408.5
D 5 222 3250441 7673.03 1760 1709 423.4
D 13 249 1534832 3621.01 1760 1709 423.4
D 12 6 612899 1443.54 1760 1709 423.4

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