ASTROSAT CZTI

Data Quality Report

Orbit 38926

Creation date: 2024-06-27T21:58:14.702274
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_064T01_9000005416_38926cztM0_level2.fits modeM0/AS1T05_064T01_9000005416_38926cztM0_level2_quad_clean.evt
Size (bytes)338,253,12088,850,880
Size322.6 MB 84.7 MB
Events in quadrant A4,168,371550,905
Events in quadrant B2,351,883632,193
Events in quadrant C2,470,213612,862
Events in quadrant D3,149,949552,420

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154772
B0101301
C0101841
D0125101

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A488456211.506962%
B4884240.491400%
C4884180.368550%
D48841282.620803%

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 7037 4885 619 619 8.80% 12.67%
B 7037 4885 11 11 0.16% 0.23%
C 7037 4885 14 14 0.20% 0.29%
D 7037 4885 116 116 1.65% 2.37%

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 6 10 1617020 14871.6 541 530 108.7
A 10 83 379998 3491.08 541 530 108.7
A 13 248 35392 320.73 541 530 108.7
B 5 172 36672 340.84 561 548 106.0
B 0 190 35407 328.9 561 548 106.0
B 5 200 26650 246.28 561 548 106.0
C 15 214 200958 1557.47 560 566 128.7
C 12 249 61107 470.53 560 566 128.7
C 0 10 20578 155.54 560 566 128.7
D 2 250 546991 4191.28 546 531 130.4
D 12 6 100053 763.32 546 531 130.4
D 2 153 89553 682.79 546 531 130.4

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