ASTROSAT CZTI

Data Quality Report

Orbit 26943

Creation date: 2024-06-27T19:34:47.270537
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/AS1A09_134T01_9000003896_26943cztM0_level2.evt modeM0/AS1A09_134T01_9000003896_26943cztM0_level2_quad_clean.evt
Size (bytes)810,455,04095,880,960
Size772.9 MB 91.4 MB
Events in quadrant A11,043,832470,683
Events in quadrant B3,743,381669,117
Events in quadrant C3,530,272657,207
Events in quadrant D5,752,345616,238

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0376200
B0154610
C0147670
D0216740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7022366652.207348%
B70222373.375107%
C70211512.150691%
D70216088.659735%

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 7266 7021 2816 2816 38.76% 40.11%
B 7267 7023 73 73 1.00% 1.04%
C 7266 7023 6 6 0.08% 0.09%
D 7266 7022 503 503 6.92% 7.16%

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 14 235 8507611 65703.07 638 624 129.5
A 0 13 32483 246.06 638 624 129.5
A 8 192 27870 210.43 638 624 129.5
B 0 189 263226 1597.79 854 833 164.2
B 15 33 67191 404.07 854 833 164.2
B 0 219 32179 190.87 854 833 164.2
C 14 238 130883 668.68 829 835 194.5
C 2 16 105982 540.65 829 835 194.5
C 15 208 31041 155.31 829 835 194.5
D 1 52 1477972 7501.54 820 798 196.9
D 11 176 410471 2080.45 820 798 196.9
D 2 250 347777 1762.07 820 798 196.9

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