ASTROSAT CZTI

Data Quality Report

Orbit 35582

Creation date: 2022-04-28T11:26:26.128029
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_071T01_9000005096_35582cztM0_level2.evt modeM0/AS1A10_071T01_9000005096_35582cztM0_level2_quad_clean.evt
Size (bytes)392,463,36059,333,760
Size374.3 MB 56.6 MB
Events in quadrant A2,799,736369,217
Events in quadrant B3,208,300369,495
Events in quadrant C2,974,224357,524
Events in quadrant D2,565,807351,850

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115233
B0125952
C0116972
D0108062

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4969290.583618%
B49692735.494063%
C49691983.984705%
D4969350.704367%

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 7091 4970 21 21 0.30% 0.42%
B 7091 4970 204 204 2.88% 4.10%
C 7091 4970 146 146 2.06% 2.94%
D 7091 4970 19 19 0.27% 0.38%

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 15 169 352031 2921.12 593 582 120.3
A 10 83 128144 1060.25 593 582 120.3
A 7 16 28634 233.16 593 582 120.3
B 5 172 883525 7937.82 580 567 111.2
B 0 189 25120 220.73 580 567 111.2
B 12 111 13831 119.24 580 567 111.2
C 0 10 533457 4007.33 568 574 133.0
C 15 214 207791 1558.29 568 574 133.0
C 10 49 12636 90.71 568 574 133.0
D 8 195 122664 875.3 571 555 139.5
D 7 80 74578 530.61 571 555 139.5
D 13 249 56025 397.62 571 555 139.5

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