ASTROSAT CZTI

Data Quality Report

Orbit 39995

Creation date: 2024-06-27T22:11:02.291811
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_054T03_9000005516_39995cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_39995cztM0_level2_quad_clean.evt
Size (bytes)320,728,32097,606,080
Size305.9 MB 93.1 MB
Events in quadrant A2,907,170651,022
Events in quadrant B2,717,126680,515
Events in quadrant C3,124,871649,809
Events in quadrant D2,691,808587,629

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120552
B0118051
C0128231
D0120121

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5536200.361272%
B5536370.668353%
C5536130.234827%
D5536340.614162%

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 9215 5538 7 7 0.08% 0.13%
B 9215 5538 12 12 0.13% 0.22%
C 9215 5538 13 13 0.14% 0.23%
D 9215 5538 35 35 0.38% 0.63%

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 461110 3632.22 623 611 126.8
A 13 248 17091 129.99 623 611 126.8
A 6 10 7865 57.22 623 611 126.8
B 4 171 202313 1687.54 626 610 119.5
B 5 255 30562 250.59 626 610 119.5
B 12 111 15029 120.64 626 610 119.5
C 14 254 362781 2547.87 612 618 142.1
C 15 214 231256 1622.57 612 618 142.1
C 15 208 96374 673.66 612 618 142.1
D 12 227 211242 1417.95 605 589 148.6
D 2 250 69773 465.69 605 589 148.6
D 13 249 35861 237.42 605 589 148.6

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