ASTROSAT CZTI

Data Quality Report

Orbit 27019

Creation date: 2024-06-27T19:36:11.339632
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/AS1T03_241T01_9000003902_27019cztM0_level2.evt modeM0/AS1T03_241T01_9000003902_27019cztM0_level2_quad_clean.evt
Size (bytes)456,690,24088,801,920
Size435.5 MB 84.7 MB
Events in quadrant A6,026,876528,807
Events in quadrant B2,408,961630,631
Events in quadrant C2,256,901609,500
Events in quadrant D2,814,871585,862

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211580
B0102290
C097670
D0117390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4758148231.147541%
B4757470.988018%
C4757691.450494%
D47572585.423586%

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 5647 4757 1067 1067 18.89% 22.43%
B 5647 4757 11 11 0.19% 0.23%
C 5647 4757 0 0 0.00% 0.00%
D 5647 4757 201 201 3.56% 4.23%

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 14 235 4059372 39774.32 502 490 102.0
A 8 192 12335 116.07 502 490 102.0
A 0 13 8719 80.64 502 490 102.0
B 0 189 77263 699.81 569 554 109.6
B 3 64 75726 685.78 569 554 109.6
B 10 245 13784 120.7 569 554 109.6
C 14 238 89499 682.62 554 557 130.3
C 10 22 3935 25.93 554 557 130.3
C 13 61 3728 24.34 554 557 130.3
D 2 250 458650 3490.16 545 530 131.3
D 12 233 206513 1569.27 545 530 131.3
D 1 52 62277 470.42 545 530 131.3

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