ASTROSAT CZTI

Data Quality Report

Orbit 35826

Creation date: 2022-05-19T14:46:53.593108
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_071T19_9000005144_35826cztM0_level2.evt modeM0/AS1A10_071T19_9000005144_35826cztM0_level2_quad_clean.evt
Size (bytes)475,139,52099,336,960
Size453.1 MB 94.7 MB
Events in quadrant A3,533,296677,078
Events in quadrant B3,295,981681,162
Events in quadrant C3,187,425657,818
Events in quadrant D4,014,222621,653

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139493
B0131632
C0126392
D0154112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5285981.854305%
B5285821.551561%
C5285951.797540%
D52852164.087039%

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 7348 5286 97 97 1.32% 1.84%
B 7347 5284 41 41 0.56% 0.78%
C 7347 5284 79 79 1.08% 1.50%
D 7347 5284 174 174 2.37% 3.29%

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 586448 4096.73 718 708 143.0
A 10 83 158496 1103.59 718 708 143.0
A 13 6 12045 79.29 718 708 143.0
B 5 172 227371 1713.86 699 683 132.3
B 4 232 113073 849.72 699 683 132.3
B 5 255 109588 823.37 699 683 132.3
C 15 214 225397 1439.38 678 684 156.1
C 0 10 206390 1317.64 678 684 156.1
C 0 207 108682 691.77 678 684 156.1
D 13 249 438109 2618.11 684 667 167.1
D 7 223 307305 1835.25 684 667 167.1
D 13 13 255360 1524.35 684 667 167.1

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