ASTROSAT CZTI

Data Quality Report

Orbit 40924

Creation date: 2024-06-27T22:22:18.220724
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_052T04_9000005582_40924cztM0_level2.fits modeM0/AS1A12_052T04_9000005582_40924cztM0_level2_quad_clean.evt
Size (bytes)308,770,56090,861,120
Size294.5 MB 86.7 MB
Events in quadrant A2,779,508627,704
Events in quadrant B2,410,171637,508
Events in quadrant C2,648,790588,170
Events in quadrant D3,202,918549,147

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111873
B0103332
C0107602
D0128542

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4982150.301084%
B4982210.421517%
C4982671.344841%
D49821092.187876%

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 7074 4983 3 3 0.04% 0.06%
B 7074 4983 9 9 0.13% 0.18%
C 7074 4983 65 65 0.92% 1.30%
D 7074 4983 92 92 1.30% 1.85%

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 496791 4201.61 585 573 118.1
A 7 3 12759 103.18 585 573 118.1
A 13 254 8002 62.9 585 573 118.1
B 5 255 111671 1001.97 581 567 110.9
B 12 111 13673 118.19 581 567 110.9
B 11 111 12571 108.26 581 567 110.9
C 0 10 214212 1654.37 560 566 129.1
C 15 214 210830 1628.19 560 566 129.1
C 0 239 34321 261.38 560 566 129.1
D 1 47 339483 2492.33 559 544 136.0
D 2 249 199862 1465.65 559 544 136.0
D 12 6 178908 1311.57 559 544 136.0

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