ASTROSAT CZTI

Data Quality Report

Orbit 03750

Creation date: 2024-06-27T14:33:12.926456
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/AS1G05_248T01_9000000486_03750cztM0_level2.evt modeM0/AS1G05_248T01_9000000486_03750cztM0_level2_quad_clean.evt
Size (bytes)525,507,84089,331,840
Size501.2 MB 85.2 MB
Events in quadrant A4,083,091563,273
Events in quadrant B4,482,957567,684
Events in quadrant C3,162,781556,686
Events in quadrant D3,718,017537,020

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164413
B0177692
C0142012
D0159042

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68972774.016239%
B68972443.537770%
C68971341.942874%
D68972243.247789%

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 7927 6897 72 72 0.91% 1.04%
B 7927 6897 21 21 0.26% 0.30%
C 7927 6897 0 0 0.00% 0.00%
D 7927 6897 83 83 1.05% 1.20%

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 13 251 321694 1870.62 833 814 171.5
A 0 118 313354 1822.0 833 814 171.5
A 8 15 123835 717.17 833 814 171.5
B 0 173 508588 3103.12 839 819 163.6
B 15 204 405315 2471.99 839 819 163.6
B 4 81 121815 739.44 839 819 163.6
C 13 61 7012 33.02 807 811 187.8
C 14 67 3518 14.41 807 811 187.8
C 2 53 3224 12.85 807 811 187.8
D 1 20 414516 2117.12 810 784 195.4
D 13 239 123541 628.16 810 784 195.4
D 13 223 31133 155.3 810 784 195.4

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
Veto Counter