ASTROSAT CZTI

Data Quality Report

Orbit 39881

Creation date: 2024-06-27T22:09:50.532646
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_032T03_9000005502_39881cztM0_level2.fits modeM0/AS1A12_032T03_9000005502_39881cztM0_level2_quad_clean.evt
Size (bytes)321,379,20090,403,200
Size306.5 MB 86.2 MB
Events in quadrant A3,267,923604,133
Events in quadrant B2,720,251628,057
Events in quadrant C2,736,339607,025
Events in quadrant D2,789,650554,018

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128512
B0111551
C0108011
D0113551

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4908951.935615%
B4908250.509372%
C4908521.059495%
D4908871.772616%

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 7000 4909 66 66 0.94% 1.34%
B 7000 4909 8 8 0.11% 0.16%
C 7000 4909 39 39 0.56% 0.79%
D 7000 4909 72 72 1.03% 1.47%

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 480426 4107.55 579 569 116.8
A 14 250 231995 1980.99 579 569 116.8
A 9 143 182461 1556.98 579 569 116.8
B 0 230 131885 1201.58 577 563 109.3
B 4 170 128029 1166.3 577 563 109.3
B 5 255 57666 522.49 577 563 109.3
C 15 214 210066 1568.82 573 576 133.5
C 14 254 189929 1418.02 573 576 133.5
C 1 16 59552 441.66 573 576 133.5
D 2 249 156028 1109.96 572 555 140.1
D 12 233 102054 724.63 572 555 140.1
D 12 227 73475 520.59 572 555 140.1

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