ASTROSAT CZTI

Data Quality Report

Orbit 45964

Creation date: 2024-06-27T23:18:14.638949
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_071T06_9000006146_45964cztM0_level2.fits modeM0/AS1A13_071T06_9000006146_45964cztM0_level2_quad_clean.evt
Size (bytes)640,022,40091,753,920
Size610.4 MB 87.5 MB
Events in quadrant A5,368,068648,015
Events in quadrant B9,610,152494,038
Events in quadrant C2,951,912650,768
Events in quadrant D5,292,744562,183

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202792
B0328282
C0131662
D0199892

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60581772.921756%
B6059200533.091269%
C6059570.940749%
D60593876.387193%

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 7108 6059 39 39 0.55% 0.64%
B 7109 6060 1643 1643 23.11% 27.11%
C 7109 6061 36 36 0.51% 0.59%
D 7109 6061 351 351 4.94% 5.79%

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 2750160 19856.73 663 648 138.5
A 7 3 19553 136.53 663 648 138.5
A 0 247 17019 118.23 663 648 138.5
B 3 112 7066234 59758.61 603 583 118.2
B 0 186 49670 415.16 603 583 118.2
B 0 190 27373 226.58 603 583 118.2
C 14 254 196702 1248.4 662 665 157.0
C 12 250 146611 929.41 662 665 157.0
C 3 9 10603 63.28 662 665 157.0
D 11 241 1700548 10671.21 639 622 159.3
D 2 37 396520 2485.23 639 622 159.3
D 13 249 353104 2212.69 639 622 159.3

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