ASTROSAT CZTI

Data Quality Report

Orbit 36690

Creation date: 2024-06-27T21:30:18.948804
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/AS1T05_041T01_9000005234_36690cztM0_level2.evt modeM0/AS1T05_041T01_9000005234_36690cztM0_level2_quad_clean.evt
Size (bytes)420,134,400101,162,880
Size400.7 MB 96.5 MB
Events in quadrant A2,617,012684,504
Events in quadrant B3,019,283682,736
Events in quadrant C3,345,605665,491
Events in quadrant D3,367,984646,078

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114723
B0125532
C0132922
D0138112

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5500100.181818%
B5500751.363636%
C55002224.036364%
D55001522.763636%

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 7114 5501 1 1 0.01% 0.02%
B 7114 5501 40 40 0.56% 0.73%
C 7114 5501 175 175 2.46% 3.18%
D 7114 5501 138 138 1.94% 2.51%

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 212386 1689.84 619 608 125.3
A 13 254 9003 66.99 619 608 125.3
A 3 137 6588 47.72 619 608 125.3
B 5 255 394379 3318.29 615 599 118.7
B 0 189 113391 950.47 615 599 118.7
B 0 199 21411 175.38 615 599 118.7
C 0 10 496470 3523.71 597 598 140.7
C 15 214 246564 1747.86 597 598 140.7
C 0 207 189794 1344.44 597 598 140.7
D 13 249 379393 2593.04 599 582 146.1
D 7 38 148517 1012.65 599 582 146.1
D 12 233 119464 813.77 599 582 146.1

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