ASTROSAT CZTI

Data Quality Report

Orbit 45621

Creation date: 2024-06-27T23:14:18.803915
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/AS1A13_071T08_9000006114_45621cztM0_level2.fits modeM0/AS1A13_071T08_9000006114_45621cztM0_level2_quad_clean.evt
Size (bytes)689,172,48090,774,720
Size657.2 MB 86.6 MB
Events in quadrant A5,455,725679,164
Events in quadrant B4,037,671682,243
Events in quadrant C2,978,741677,957
Events in quadrant D12,561,415279,445

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202531
B0161411
C0133131
D0415826

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61572383.865519%
B61583916.349464%
C6158811.315362%
D6157366759.558226%

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 7112 6158 2 2 0.03% 0.03%
B 7113 6159 119 119 1.67% 1.93%
C 7113 6159 28 28 0.39% 0.45%
D 7111 6157 3452 3452 48.54% 56.07%

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 10 83 2672487 18123.62 704 688 147.4
A 0 243 19890 130.25 704 688 147.4
A 10 255 19839 129.91 704 688 147.4
B 15 201 584222 4246.18 698 676 137.4
B 5 172 301226 2186.96 698 676 137.4
B 4 171 221093 1603.87 698 676 137.4
C 14 254 198136 1211.71 691 693 162.9
C 0 207 64856 393.77 691 693 162.9
C 2 14 18089 106.76 691 693 162.9
D 11 241 6845183 51835.43 527 509 132.0
D 2 249 2581433 19545.61 527 509 132.0
D 8 129 764192 5783.45 527 509 132.0

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