ASTROSAT CZTI

Data Quality Report

Orbit 20230411_A12_068T02_9000005564_level2

Creation date: 2023-04-13T11:57:06.514718
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_068T02_9000005564cztM0_level2.fits modeM0/AS1A12_068T02_9000005564cztM0_level2_quad_clean.evt
Size (bytes)397,290,240340,358,400
Size378.9 MB 324.6 MB
Events in quadrant A2,455,2862,000,102
Events in quadrant B2,358,2462,024,514
Events in quadrant C2,246,2361,671,049
Events in quadrant D1,907,0061,549,576

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0959630
B0932510
C01706350
D01101590

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09120
B09120
C09120
D09120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01790
B01790
C01790
D01790

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A44574840.188451%
B445743230.724638%
C44574581813.052452%
D44573548812.312386%

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 62628 44571 0 0 0.00% 0.00%
B 62628 44526 0 0 0.00% 0.00%
C 62629 44511 0 0 0.00% 0.00%
D 62628 44471 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 7 110 2088 9.04 640 599 164.7
A 9 19 2016 8.6 640 599 164.7
A 0 29 1880 7.78 640 599 164.7
B 2 9 2032 11.82 623 595 121.6
B 5 128 1676 8.89 623 595 121.6
B 5 232 1654 8.71 623 595 121.6
C 1 81 1820 8.21 593 555 154.0
C 1 80 1786 7.99 593 555 154.0
C 3 202 1742 7.71 593 555 154.0
D 10 189 1468 5.94 554 505 162.0
D 7 3 1456 5.87 554 505 162.0
D 6 67 1416 5.62 554 505 162.0

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