ASTROSAT CZTI

Data Quality Report

Orbit 33150

Creation date: 2024-06-27T20:45:28.328659
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/AS1A11_096T01_9000004766_33150cztM0_level2.evt modeM0/AS1A11_096T01_9000004766_33150cztM0_level2_quad_clean.evt
Size (bytes)438,468,48070,960,320
Size418.2 MB 67.7 MB
Events in quadrant A2,461,178462,932
Events in quadrant B3,147,312464,809
Events in quadrant C2,710,991446,304
Events in quadrant D4,623,161426,844

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102513
B0126802
C0110952
D0172572

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A495860.121017%
B4958450.907624%
C4958941.895926%
D49582515.062525%

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 7050 4959 0 0 0.00% 0.00%
B 7050 4959 15 15 0.21% 0.30%
C 7050 4959 67 67 0.95% 1.35%
D 7050 4959 216 216 3.06% 4.36%

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 29368 231.24 623 613 124.3
A 13 6 12911 98.9 623 613 124.3
A 13 254 9720 73.24 623 613 124.3
B 0 219 312217 2662.75 624 610 117.0
B 5 172 121726 1034.96 624 610 117.0
B 0 189 82596 700.59 624 610 117.0
C 0 10 193678 1402.32 592 597 137.7
C 9 187 73134 526.83 592 597 137.7
C 1 241 72068 519.09 592 597 137.7
D 8 195 1212950 8520.06 583 572 142.3
D 2 249 329889 2314.3 583 572 142.3
D 1 52 185413 1298.98 583 572 142.3

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