ASTROSAT CZTI

Data Quality Report

Orbit 17836

Creation date: 2024-06-27T17:41:35.742320
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_025T04_9000002652_17836cztM0_level2.evt modeM0/AS1A05_025T04_9000002652_17836cztM0_level2_quad_clean.evt
Size (bytes)386,930,88070,102,080
Size369.0 MB 66.9 MB
Events in quadrant A2,554,859444,713
Events in quadrant B2,904,319444,564
Events in quadrant C2,610,474431,968
Events in quadrant D3,273,159415,557

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112881
B0122061
C0112351
D0136071

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5514300.544070%
B55151392.520399%
C5515581.051677%
D55152043.699003%

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 6389 5516 2 2 0.03% 0.04%
B 6390 5517 53 53 0.83% 0.96%
C 6390 5517 0 0 0.00% 0.00%
D 6390 5517 155 155 2.43% 2.81%

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 15 174 49413 373.22 651 637 130.7
A 0 226 5679 38.58 651 637 130.7
A 3 137 4921 32.78 651 637 130.7
B 10 245 314076 2488.06 650 633 126.0
B 15 222 25738 199.28 650 633 126.0
B 12 111 14994 114.0 650 633 126.0
C 14 238 97513 662.76 626 630 146.2
C 13 62 43954 296.37 626 630 146.2
C 5 218 21551 143.12 626 630 146.2
D 7 238 843931 5538.87 625 607 152.3
D 10 70 36404 235.11 625 607 152.3
D 2 234 21142 134.87 625 607 152.3

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