ASTROSAT CZTI

Data Quality Report

Orbit 42171

Creation date: 2024-06-27T22:37:43.852661
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/AS1A11_032T04_9000005766_42171cztM0_level2.fits modeM0/AS1A11_032T04_9000005766_42171cztM0_level2_quad_clean.evt
Size (bytes)290,246,40084,821,760
Size276.8 MB 80.9 MB
Events in quadrant A2,964,714560,405
Events in quadrant B2,321,670592,213
Events in quadrant C2,317,269561,209
Events in quadrant D2,755,290508,249

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117732
B0101912
C099232
D0116732

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0330
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49361102.228525%
B4936100.202593%
C493640.081037%
D4936711.438412%

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 7060 4937 109 109 1.54% 2.21%
B 7060 4937 3 3 0.04% 0.06%
C 7060 4937 0 0 0.00% 0.00%
D 7060 4937 73 73 1.03% 1.48%

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 497164 4430.0 542 532 112.1
A 15 222 351267 3128.58 542 532 112.1
A 12 189 8670 72.59 542 532 112.1
B 0 229 93696 864.66 552 537 107.7
B 5 255 55727 512.25 552 537 107.7
B 12 111 13376 119.17 552 537 107.7
C 15 214 208381 1649.86 539 545 126.0
C 15 159 4432 30.86 539 545 126.0
C 0 207 4210 29.09 539 545 126.0
D 1 52 239614 1825.56 531 516 131.0
D 12 6 227105 1730.06 531 516 131.0
D 13 249 63831 483.42 531 516 131.0

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