ASTROSAT CZTI

Data Quality Report

Orbit 47269

Creation date: 2024-06-27T23:33:32.657101
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/AS1A13_025T01_9000006312_47269cztM0_level2.fits modeM0/AS1A13_025T01_9000006312_47269cztM0_level2_quad_clean.evt
Size (bytes)693,406,08099,302,400
Size661.3 MB 94.7 MB
Events in quadrant A8,177,414649,545
Events in quadrant B3,496,553742,986
Events in quadrant C3,421,659690,021
Events in quadrant D10,068,451469,401

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02889135
B0148425
C0147343
D03447746

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A650688413.587458%
B6512540.829238%
C65131442.210963%
D6505207631.913912%

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 7573 6513 365 365 4.82% 5.60%
B 7574 6515 4 4 0.05% 0.06%
C 7574 6515 93 93 1.23% 1.43%
D 7573 6514 1993 1993 26.32% 30.60%

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 10 83 3869945 25539.68 727 711 151.5
A 9 191 1369800 9036.96 727 711 151.5
A 15 235 84941 555.98 727 711 151.5
B 14 167 125028 828.65 754 731 150.0
B 0 200 111481 738.33 754 731 150.0
B 0 183 73919 487.92 754 731 150.0
C 14 254 297380 1712.22 733 735 173.3
C 10 9 185049 1063.85 733 735 173.3
C 8 222 17262 95.39 733 735 173.3
D 6 112 6559068 39189.46 654 632 167.4
D 12 233 394466 2353.32 654 632 167.4
D 12 1 218717 1303.15 654 632 167.4

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