ASTROSAT CZTI

Data Quality Report

Orbit 03808

Creation date: 2024-06-27T14:33:52.399650
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_194T01_9000000490_03808cztM0_level2.evt modeM0/AS1G05_194T01_9000000490_03808cztM0_level2_quad_clean.evt
Size (bytes)509,955,84059,051,520
Size486.3 MB 56.3 MB
Events in quadrant A3,284,592343,083
Events in quadrant B3,438,745348,429
Events in quadrant C5,009,702328,287
Events in quadrant D3,282,841327,283

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138042
B0140441
C0190061
D0141671

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63111732.741245%
B63111201.901442%
C63113595.688480%
D63112003.169070%

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 7411 6311 57 57 0.77% 0.90%
B 7411 6311 4 4 0.05% 0.06%
C 7411 6311 279 279 3.76% 4.42%
D 7411 6311 92 92 1.24% 1.46%

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 0 50 167070 1063.07 766 751 156.5
A 13 251 108456 688.42 766 751 156.5
A 0 118 24910 154.42 766 751 156.5
B 15 204 127532 837.42 775 758 151.4
B 14 167 113554 745.09 775 758 151.4
B 0 173 106701 699.82 775 758 151.4
C 2 53 2165490 12802.29 723 726 169.1
C 13 61 5882 30.49 723 726 169.1
C 9 247 5752 29.72 723 726 169.1
D 2 32 385043 2167.82 729 707 177.3
D 13 239 32577 179.76 729 707 177.3
D 13 223 31921 176.06 729 707 177.3

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
Veto Counter