ASTROSAT CZTI

Data Quality Report

Orbit 13272

Creation date: 2024-06-27T16:38:44.223404
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/AS1G08_031T03_9000001972_13272cztM0_level2.evt modeM0/AS1G08_031T03_9000001972_13272cztM0_level2_quad_clean.evt
Size (bytes)579,502,080103,536,000
Size552.7 MB 98.7 MB
Events in quadrant A5,758,779665,088
Events in quadrant B3,462,244700,579
Events in quadrant C3,131,845687,438
Events in quadrant D4,775,547647,625

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214502
B0144722
C0134102
D0184622

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A622487514.058483%
B62241282.056555%
C6224741.188946%
D62242804.498715%

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 8660 6227 621 621 7.17% 9.97%
B 8660 6227 22 22 0.25% 0.35%
C 8660 6227 1 1 0.01% 0.02%
D 8660 6227 192 192 2.22% 3.08%

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 15 239 2653130 16830.0 785 769 157.6
A 15 69 33843 209.86 785 769 157.6
A 8 15 19448 118.52 785 769 157.6
B 4 239 195160 1266.79 811 791 153.4
B 4 142 47546 304.72 811 791 153.4
B 0 214 22100 138.88 811 791 153.4
C 15 208 19510 101.82 796 800 183.8
C 6 96 5810 27.26 796 800 183.8
C 13 61 5672 26.51 796 800 183.8
D 5 222 1713097 9151.84 787 769 187.1
D 1 52 62805 331.56 787 769 187.1
D 2 234 21703 111.89 787 769 187.1

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