ASTROSAT CZTI

Data Quality Report

Orbit 11281

Creation date: 2024-06-27T16:10:43.636549
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/AS1A04_080T03_9000001650_11281cztM0_level2.evt modeM0/AS1A04_080T03_9000001650_11281cztM0_level2_quad_clean.evt
Size (bytes)634,613,76070,084,800
Size605.2 MB 66.8 MB
Events in quadrant A8,143,778370,847
Events in quadrant B4,071,709443,899
Events in quadrant C2,560,543460,149
Events in quadrant D4,045,426435,525

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0282061
B0160201
C0119781
D0158251

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5876195333.236896%
B58764307.317903%
C5876260.442478%
D58761863.165419%

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 5876 5876 1485 1485 25.27% 25.27%
B 5876 5876 248 248 4.22% 4.22%
C 5876 5876 0 0 0.00% 0.00%
D 5876 5876 123 123 2.09% 2.09%

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 8 5 5601543 46851.24 577 564 119.5
A 14 238 186790 1557.75 577 564 119.5
A 1 162 33507 275.56 577 564 119.5
B 4 239 1016716 8075.57 657 641 125.8
B 3 64 357253 2834.28 657 641 125.8
B 11 51 73314 577.59 657 641 125.8
C 13 61 4823 27.24 655 657 152.9
C 9 204 3265 17.05 655 657 152.9
C 14 234 2447 11.7 655 657 152.9
D 13 152 562291 3581.95 642 622 156.8
D 7 80 238595 1517.63 642 622 156.8
D 1 52 210252 1336.88 642 622 156.8

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