ASTROSAT CZTI

Data Quality Report

Orbit 36349

Creation date: 2022-06-19T02:09:49.757424
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/AS1A10_103T02_9000005192_36349cztM0_level2.evt modeM0/AS1A10_103T02_9000005192_36349cztM0_level2_quad_clean.evt
Size (bytes)406,848,96081,803,520
Size388.0 MB 78.0 MB
Events in quadrant A2,434,071558,046
Events in quadrant B2,973,667542,208
Events in quadrant C2,615,221533,904
Events in quadrant D3,966,899500,805

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103933
B0120152
C0107772
D0151072

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4875150.307692%
B48752174.451282%
C4875671.374359%
D48752845.825641%

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 6997 4876 12 12 0.17% 0.25%
B 6997 4876 176 176 2.52% 3.61%
C 6997 4876 61 61 0.87% 1.25%
D 6997 4876 322 322 4.60% 6.60%

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 178371 1565.22 561 552 113.6
A 9 143 51226 446.05 561 552 113.6
A 7 3 11536 96.68 561 552 113.6
B 5 236 445766 4345.51 547 534 102.5
B 5 172 98492 956.08 547 534 102.5
B 0 190 86919 843.13 547 534 102.5
C 0 10 253052 2034.8 538 543 124.1
C 15 214 208874 1678.8 538 543 124.1
C 0 207 42912 341.42 538 543 124.1
D 12 227 650483 5116.65 525 511 127.0
D 12 6 559987 4404.26 525 511 127.0
D 2 250 149236 1170.78 525 511 127.0

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