ASTROSAT CZTI

Data Quality Report

Orbit 36488

Creation date: 2022-06-28T14:16:01.003382
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/AS1A11_049T04_9000005210_36488cztM0_level2.evt modeM0/AS1A11_049T04_9000005210_36488cztM0_level2_quad_clean.evt
Size (bytes)446,941,44061,346,880
Size426.2 MB 58.5 MB
Events in quadrant A2,702,966386,230
Events in quadrant B4,395,460352,712
Events in quadrant C2,753,868380,245
Events in quadrant D3,317,222360,639

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113343
B0165592
C0113872
D0134492

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5388180.334076%
B538857010.579065%
C5388340.631032%
D53881502.783964%

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 7090 5389 7 7 0.10% 0.13%
B 7090 5389 439 439 6.19% 8.15%
C 7090 5389 14 14 0.20% 0.26%
D 7090 5389 124 124 1.75% 2.30%

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 198987 1574.48 628 618 126.0
A 15 223 44501 348.3 628 618 126.0
A 13 6 13508 102.31 628 618 126.0
B 5 172 1743703 15163.56 597 583 115.0
B 5 63 117863 1020.23 597 583 115.0
B 0 190 93782 810.75 597 583 115.0
C 15 214 233150 1665.17 605 611 139.6
C 0 10 152396 1086.91 605 611 139.6
C 0 207 6117 39.43 605 611 139.6
D 13 249 387677 2597.77 604 586 149.0
D 2 250 157591 1053.66 604 586 149.0
D 12 6 143518 959.22 604 586 149.0

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