ASTROSAT CZTI

Data Quality Report

Orbit 44143

Creation date: 2024-06-27T22:59:42.927623
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/AS1A13_012T02_9000005950_44143cztM0_level2.fits modeM0/AS1A13_012T02_9000005950_44143cztM0_level2_quad_clean.evt
Size (bytes)436,098,240109,272,960
Size415.9 MB 104.2 MB
Events in quadrant A4,816,192725,882
Events in quadrant B3,603,732742,509
Events in quadrant C3,067,255728,699
Events in quadrant D4,142,348650,998

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189961
B0152861
C0138481
D0169951

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66061802.724796%
B66062023.057826%
C6606180.272480%
D66062113.194066%

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 7501 6607 50 50 0.67% 0.76%
B 7501 6607 97 97 1.29% 1.47%
C 7501 6607 8 8 0.11% 0.12%
D 7501 6607 168 168 2.24% 2.54%

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 1350641 8641.41 747 731 156.2
A 14 238 504400 3224.22 747 731 156.2
A 7 3 54668 345.28 747 731 156.2
B 5 172 280077 1899.87 742 720 147.0
B 5 235 127051 859.16 742 720 147.0
B 0 200 114819 775.97 742 720 147.0
C 1 241 119627 685.14 737 742 173.5
C 14 254 54284 308.57 737 742 173.5
C 3 233 8125 42.55 737 742 173.5
D 1 47 612323 3332.16 725 701 183.6
D 13 249 198933 1079.98 725 701 183.6
D 1 52 182475 990.32 725 701 183.6

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