ASTROSAT CZTI

Data Quality Report

Orbit 45550

Creation date: 2024-06-27T23:13:30.118490
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_071T02_9000006106_45550cztM0_level2.fits modeM0/AS1A13_071T02_9000006106_45550cztM0_level2_quad_clean.evt
Size (bytes)482,670,720111,548,160
Size460.3 MB 106.4 MB
Events in quadrant A5,890,568738,301
Events in quadrant B3,584,840769,640
Events in quadrant C3,464,019743,974
Events in quadrant D4,399,917652,740

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225522
B0153792
C0150862
D0177672

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67932693.959959%
B67931822.679229%
C6794951.398293%
D67943655.372387%

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 7658 6794 52 52 0.68% 0.77%
B 7658 6794 105 105 1.37% 1.55%
C 7659 6795 50 50 0.65% 0.74%
D 7659 6795 282 282 3.68% 4.15%

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 2711788 16752.39 769 752 161.8
A 13 248 168601 1037.19 769 752 161.8
A 2 79 30617 184.55 769 752 161.8
B 5 172 480786 3141.92 772 747 152.8
B 12 111 19493 122.69 772 747 152.8
B 11 111 18010 112.99 772 747 152.8
C 14 254 427819 2333.61 768 773 183.0
C 1 3 23454 123.94 768 773 183.0
C 11 16 11886 60.73 768 773 183.0
D 13 249 690218 3681.47 738 715 187.3
D 1 52 319461 1701.89 738 715 187.3
D 11 192 143134 760.42 738 715 187.3

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