ASTROSAT CZTI

Data Quality Report

Orbit 14835

Creation date: 2024-06-27T17:00:11.149472
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/AS1C03_005T02_9000002192_14835cztM0_level2.evt modeM0/AS1C03_005T02_9000002192_14835cztM0_level2_quad_clean.evt
Size (bytes)464,230,080115,542,720
Size442.7 MB 110.2 MB
Events in quadrant A3,266,023779,306
Events in quadrant B3,527,138779,613
Events in quadrant C3,520,379765,952
Events in quadrant D3,323,970741,107

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135002
B0143311
C0141771
D0139831

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6211941.513444%
B62111362.189664%
C62111031.658348%
D6211941.513444%

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 7472 6213 2 2 0.03% 0.03%
B 7472 6213 21 21 0.28% 0.34%
C 7472 6213 35 35 0.47% 0.56%
D 7472 6213 14 14 0.19% 0.23%

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 100269 612.47 817 802 162.4
A 9 143 12511 72.1 817 802 162.4
A 0 226 7305 40.04 817 802 162.4
B 3 64 108090 731.26 800 783 146.7
B 0 229 88879 600.34 800 783 146.7
B 0 189 50322 337.59 800 783 146.7
C 3 233 307949 1730.3 783 789 177.5
C 0 207 158616 889.07 783 789 177.5
C 13 61 5660 27.44 783 789 177.5
D 13 104 72630 376.82 797 774 190.7
D 10 70 63978 331.45 797 774 190.7
D 7 254 44761 230.67 797 774 190.7

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