ASTROSAT CZTI

Data Quality Report

Orbit 29805

Creation date: 2024-06-27T20:07:55.013327
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/AS1T03_291T01_9000004278_29805cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29805cztM0_level2_quad_clean.evt
Size (bytes)912,706,56088,632,000
Size870.4 MB 84.5 MB
Events in quadrant A3,168,588664,842
Events in quadrant B8,417,980620,800
Events in quadrant C3,272,340617,502
Events in quadrant D12,377,359358,650

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129721
B0291363
C0132171
D0409271

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6018490.814224%
B6017160426.657803%
C60171051.745056%
D6018342856.962446%

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 7343 6019 0 0 0.00% 0.00%
B 7342 6018 1085 1085 14.78% 18.03%
C 7342 6018 17 17 0.23% 0.28%
D 7343 6019 3640 3640 49.57% 60.48%

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 13 254 12998 75.38 820 806 161.7
A 3 137 7361 40.53 820 806 161.7
A 0 226 7184 39.44 820 806 161.7
B 0 189 3641508 26343.67 751 736 138.2
B 6 159 1722880 12460.98 751 736 138.2
B 0 229 70017 501.3 751 736 138.2
C 14 238 132621 743.48 772 780 177.3
C 10 22 97466 545.23 772 780 177.3
C 3 233 15396 82.42 772 780 177.3
D 7 238 9585040 72904.39 555 540 131.5
D 8 195 379636 2883.59 555 540 131.5
D 7 80 100498 760.33 555 540 131.5

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