ASTROSAT CZTI

Data Quality Report

Orbit 12819

Creation date: 2024-06-27T16:32:43.949706
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/AS1G08_071T01_9000001888_12819cztM0_level2.evt modeM0/AS1G08_071T01_9000001888_12819cztM0_level2_quad_clean.evt
Size (bytes)459,927,36089,988,480
Size438.6 MB 85.8 MB
Events in quadrant A3,270,917570,367
Events in quadrant B3,890,443570,931
Events in quadrant C2,977,609570,759
Events in quadrant D3,335,833547,368

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137713
B0156972
C0134782
D0144972

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6679460.688726%
B66792834.237161%
C6679240.359335%
D6679841.257673%

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 7685 6681 0 0 0.00% 0.00%
B 7685 6681 140 140 1.82% 2.10%
C 7685 6681 0 0 0.00% 0.00%
D 7685 6681 54 54 0.70% 0.81%

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 12 189 106512 649.04 796 780 162.9
A 15 222 106084 646.41 796 780 162.9
A 0 226 7040 38.42 796 780 162.9
B 4 239 562087 3742.2 781 761 150.0
B 3 64 107539 711.86 781 761 150.0
B 0 219 90487 598.18 781 761 150.0
C 13 61 5725 27.88 763 765 177.9
C 3 202 1835 6.02 763 765 177.9
C -1 -1 -1 -1.0 763 765 177.9
D 8 195 147594 808.66 762 740 181.6
D 1 52 135671 743.0 762 740 181.6
D 2 136 73908 402.9 762 740 181.6

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