ASTROSAT CZTI

Data Quality Report

Orbit 38406

Creation date: 2024-06-27T21:52:19.861757
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_018T01_9000005386_38406cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38406cztM0_level2_quad_clean.evt
Size (bytes)319,127,04086,160,960
Size304.3 MB 82.2 MB
Events in quadrant A2,983,205576,260
Events in quadrant B2,662,502590,241
Events in quadrant C2,562,428572,026
Events in quadrant D3,221,104524,867

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119343
B0110902
C0106092
D0128632

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49291032.089673%
B4929531.075269%
C4929320.649219%
D4929941.907081%

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 6992 4930 70 70 1.00% 1.42%
B 6992 4930 29 29 0.41% 0.59%
C 6992 4930 25 25 0.36% 0.51%
D 6992 4930 74 74 1.06% 1.50%

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 394258 3579.33 546 536 110.0
A 13 248 223413 2026.18 546 536 110.0
A 9 143 127578 1154.94 546 536 110.0
B 4 171 123086 1195.1 546 533 102.5
B 0 183 97371 944.34 546 533 102.5
B 0 155 84600 819.8 546 533 102.5
C 15 214 209300 1661.59 542 548 125.6
C 1 23 85895 679.33 542 548 125.6
C 5 250 80527 636.6 542 548 125.6
D 2 250 290717 2236.22 538 522 129.8
D 12 235 232212 1785.38 538 522 129.8
D 2 153 200400 1540.24 538 522 129.8

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