ASTROSAT CZTI

Data Quality Report

Orbit 43478

Creation date: 2024-06-27T22:52:27.357547
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_018T01_9000005874_43478cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43478cztM0_level2_quad_clean.evt
Size (bytes)486,639,36086,158,080
Size464.1 MB 82.2 MB
Events in quadrant A6,072,910519,758
Events in quadrant B2,717,662616,163
Events in quadrant C2,616,491592,180
Events in quadrant D6,166,955484,249

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0218962
B0121242
C0114862
D0223072

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5660105818.692580%
B5660400.706714%
C566050.088339%
D566077713.727915%

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 7183 5661 721 721 10.04% 12.74%
B 7183 5661 26 26 0.36% 0.46%
C 7183 5661 3 3 0.04% 0.05%
D 7183 5661 780 780 10.86% 13.78%

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 15 222 2243636 19256.74 562 550 116.5
A 15 237 1027766 8818.58 562 550 116.5
A 10 83 614766 5273.0 562 550 116.5
B 5 255 87309 756.75 595 580 114.6
B 0 190 74379 643.93 595 580 114.6
B 0 245 59148 511.03 595 580 114.6
C 15 214 249877 1824.45 582 584 136.6
C 3 233 89832 653.16 582 584 136.6
C 13 61 3994 24.96 582 584 136.6
D 13 249 1246813 9232.07 549 530 135.0
D 2 16 922922 6832.79 549 530 135.0
D 1 52 888163 6575.31 549 530 135.0

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