ASTROSAT CZTI

Data Quality Report

Orbit 38097

Creation date: 2024-06-27T21:48:20.153200
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_047T09_9000005362_38097cztM0_level2.fits modeM0/AS1A11_047T09_9000005362_38097cztM0_level2_quad_clean.evt
Size (bytes)394,813,44093,337,920
Size376.5 MB 89.0 MB
Events in quadrant A2,969,913650,030
Events in quadrant B2,762,764659,464
Events in quadrant C4,365,541579,978
Events in quadrant D4,106,934567,796

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121463
B0116222
C0164202
D0157922

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5268330.626424%
B5268310.588459%
C52685009.491268%
D52682805.315110%

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 7061 5269 12 12 0.17% 0.23%
B 7061 5269 13 13 0.18% 0.25%
C 7061 5269 448 448 6.34% 8.50%
D 7061 5269 226 226 3.20% 4.29%

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 373439 2917.36 630 618 127.8
A 12 16 59077 457.45 630 618 127.8
A 13 248 26336 201.25 630 618 127.8
B 0 229 115915 959.61 628 613 120.2
B 4 81 59835 492.88 628 613 120.2
B 5 172 42689 350.18 628 613 120.2
C 1 23 1740795 12602.07 592 598 138.1
C 15 214 211816 1529.59 592 598 138.1
C 0 10 40000 285.34 592 598 138.1
D 12 235 414723 2826.69 602 586 146.5
D 13 138 335292 2284.54 602 586 146.5
D 12 233 293123 1996.71 602 586 146.5

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