ASTROSAT CZTI

Data Quality Report

Orbit 41042

Creation date: 2024-06-27T22:23:37.341966
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_029T02_9000005590_41042cztM0_level2.fits modeM0/AS1A12_029T02_9000005590_41042cztM0_level2_quad_clean.evt
Size (bytes)300,824,64087,606,720
Size286.9 MB 83.5 MB
Events in quadrant A2,701,079594,546
Events in quadrant B2,241,275609,684
Events in quadrant C2,796,007576,848
Events in quadrant D3,000,644515,554

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111983
B0102152
C0114142
D0125472

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5083100.196734%
B508330.059020%
C50831062.085383%
D50832444.800315%

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 9328 5085 4 4 0.04% 0.08%
B 9328 5085 0 0 0.00% 0.00%
C 9328 5085 87 87 0.93% 1.71%
D 9328 5085 195 195 2.09% 3.83%

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 490335 4223.87 567 557 116.0
A 13 254 9337 75.72 567 557 116.0
A 12 189 7938 63.65 567 557 116.0
B 12 111 13609 119.24 567 552 109.5
B 11 111 12731 111.23 567 552 109.5
B 14 111 12301 107.3 567 552 109.5
C 15 214 216857 1654.23 560 563 130.8
C 14 254 206831 1577.55 560 563 130.8
C 0 10 134612 1025.21 560 563 130.8
D 2 249 497863 3743.06 544 529 132.9
D 13 249 168927 1267.41 544 529 132.9
D 13 171 123997 929.25 544 529 132.9

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