ASTROSAT CZTI

Data Quality Report

Orbit 34382

Creation date: 2022-02-06T05:49:02.822466
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/AS1A05_085T01_9000004910_34382cztM0_level2.evt modeM0/AS1A05_085T01_9000004910_34382cztM0_level2_quad_clean.evt
Size (bytes)817,067,52062,524,800
Size779.2 MB 59.6 MB
Events in quadrant A2,523,812452,193
Events in quadrant B3,723,507433,347
Events in quadrant C9,035,956336,406
Events in quadrant D9,089,794283,565

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112143
B0147622
C0306862
D0308342

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A552370.126743%
B55233907.061380%
C5523253345.862756%
D5523259346.949122%

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 7256 5524 0 0 0.00% 0.00%
B 7256 5524 293 293 4.04% 5.30%
C 7256 5523 2355 2355 32.46% 42.64%
D 7256 5523 2425 2425 33.42% 43.91%

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 32303 248.0 633 620 127.8
A 9 143 18051 136.44 633 620 127.8
A 13 6 16372 123.3 633 620 127.8
B 5 172 1109263 9424.43 614 599 117.6
B 0 190 110930 937.89 614 599 117.6
B 5 255 25637 212.84 614 599 117.6
C 4 254 6929832 65583.88 450 454 105.7
C 15 214 173341 1636.31 450 454 105.7
C 0 10 124438 1173.46 450 454 105.7
D 7 223 3902787 33117.2 482 469 117.8
D 2 249 2239806 19004.24 482 469 117.8
D 8 195 563438 4777.66 482 469 117.8

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