ASTROSAT CZTI

Data Quality Report

Orbit 38401

Creation date: 2024-06-27T21:52:15.095543
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_9000005386_38401cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38401cztM0_level2_quad_clean.evt
Size (bytes)328,645,44093,150,720
Size313.4 MB 88.8 MB
Events in quadrant A2,874,001639,829
Events in quadrant B2,690,302653,593
Events in quadrant C2,562,537606,758
Events in quadrant D3,624,097547,405

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118433
B0114202
C0109092
D0142432

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5347150.280531%
B5347190.355339%
C534760.112212%
D52491041.981330%

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 7110 5348 9 9 0.13% 0.17%
B 7110 5348 6 6 0.08% 0.11%
C 7110 5348 1 1 0.01% 0.02%
D 7110 5251 79 79 1.11% 1.50%

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 403377 3330.7 609 599 120.9
A 9 143 54052 442.02 609 599 120.9
A 13 248 22022 177.15 609 599 120.9
B 0 183 234726 2033.16 603 587 115.2
B 0 155 30505 259.8 603 587 115.2
B 8 3 16769 140.52 603 587 115.2
C 15 214 229422 1677.78 585 588 136.4
C 8 79 18862 133.98 585 588 136.4
C 0 10 17683 125.34 585 588 136.4
D 2 250 327790 2368.01 574 558 138.2
D 10 203 308449 2228.05 574 558 138.2
D 2 153 231016 1667.71 574 558 138.2

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