ASTROSAT CZTI

Data Quality Report

Orbit 06395

Creation date: 2024-06-27T15:06:25.831170
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/AS1C02_017T01_9000000848_06395cztM0_level2.evt modeM0/AS1C02_017T01_9000000848_06395cztM0_level2_quad_clean.evt
Size (bytes)425,194,560120,697,920
Size405.5 MB 115.1 MB
Events in quadrant A2,909,036809,335
Events in quadrant B3,172,282826,840
Events in quadrant C2,877,102815,435
Events in quadrant D3,496,158770,513

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127202
B0133131
C0127511
D0144361

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6214560.901191%
B6214861.383972%
C6214590.949469%
D6214811.303508%

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 7379 6215 0 0 0.00% 0.00%
B 7379 6215 6 6 0.08% 0.10%
C 7379 6215 0 0 0.00% 0.00%
D 7379 6215 27 27 0.37% 0.43%

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 8 15 31935 210.27 742 727 148.4
A 3 1 8877 54.91 742 727 148.4
A 0 226 7124 43.1 742 727 148.4
B 0 228 161897 1153.25 750 732 139.7
B 4 81 45035 317.02 750 732 139.7
B 4 170 15311 104.32 750 732 139.7
C 13 61 5913 31.06 733 736 166.7
C 8 128 5413 28.06 733 736 166.7
C 1 16 3017 13.68 733 736 166.7
D 13 105 250137 1411.28 726 702 176.7
D 11 241 135592 763.19 726 702 176.7
D 2 152 135288 761.47 726 702 176.7

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