ASTROSAT CZTI

Data Quality Report

Orbit 40919

Creation date: 2024-06-27T22:22:13.951217
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_044T19_9000005580_40919cztM0_level2.fits modeM0/AS1A12_044T19_9000005580_40919cztM0_level2_quad_clean.evt
Size (bytes)323,089,92093,372,480
Size308.1 MB 89.0 MB
Events in quadrant A3,040,342626,744
Events in quadrant B2,545,051645,076
Events in quadrant C2,759,607603,915
Events in quadrant D3,173,739556,069

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123763
B0114432
C0117152
D0132832

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5658180.318134%
B5658100.176741%
C5658450.795334%
D5658941.661364%

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 8793 5660 2 2 0.02% 0.04%
B 8793 5660 2 2 0.02% 0.04%
C 8793 5660 29 29 0.33% 0.51%
D 8793 5660 68 68 0.77% 1.20%

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 531563 3959.22 642 628 134.1
A 2 79 10571 74.15 642 628 134.1
A 13 254 9045 62.77 642 628 134.1
B 5 255 43001 335.74 635 616 126.2
B 12 111 15748 119.86 635 616 126.2
B 11 111 14538 110.28 635 616 126.2
C 15 214 241505 1659.75 618 621 145.1
C 0 10 106945 732.6 618 621 145.1
C 13 61 4030 23.49 618 621 145.1
D 12 233 220735 1449.78 619 602 151.8
D 12 6 122845 805.08 619 602 151.8
D 1 47 114913 752.84 619 602 151.8

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