ASTROSAT CZTI

Data Quality Report

Orbit 26762

Creation date: 2024-06-27T19:32:33.391870
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/AS1A09_044T02_9000003852_26762cztM0_level2.evt modeM0/AS1A09_044T02_9000003852_26762cztM0_level2_quad_clean.evt
Size (bytes)707,644,80061,914,240
Size674.9 MB 59.0 MB
Events in quadrant A3,900,641396,122
Events in quadrant B5,855,313317,448
Events in quadrant C3,546,249380,331
Events in quadrant D7,700,057336,845

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157850
B0214720
C0144320
D0272150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6347290.456909%
B6345104416.453901%
C63481001.575299%
D6344121319.120429%

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 7614 6349 0 0 0.00% 0.00%
B 7616 6350 839 839 11.02% 13.21%
C 7616 6352 3 3 0.04% 0.05%
D 7612 6348 1078 1078 14.16% 16.98%

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 0 13 453623 2562.62 888 874 176.7
A 12 96 23785 129.68 888 874 176.7
A 13 254 10396 53.9 888 874 176.7
B 0 189 2515550 16571.93 824 810 151.7
B 10 246 91565 598.07 824 810 151.7
B 12 111 17810 112.03 824 810 151.7
C 14 238 138869 711.27 843 851 194.0
C 2 16 49863 252.58 843 851 194.0
C 10 22 48760 246.9 843 851 194.0
D 7 80 4493416 23394.2 788 771 192.0
D 1 52 91287 471.34 788 771 192.0
D 12 227 60641 311.76 788 771 192.0

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