ASTROSAT CZTI

Data Quality Report

Orbit 22758

Creation date: 2024-06-27T18:45:18.782817
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/AS1C05_001T01_9000003366_22758cztM0_level2.evt modeM0/AS1C05_001T01_9000003366_22758cztM0_level2_quad_clean.evt
Size (bytes)440,392,320127,782,720
Size420.0 MB 121.9 MB
Events in quadrant A3,065,528874,044
Events in quadrant B3,175,661874,346
Events in quadrant C3,076,533836,058
Events in quadrant D3,566,791821,664

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136201
B0137601
C0136401
D0151661

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6657360.540784%
B6657550.826198%
C6656590.886418%
D66561221.832933%

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 6967 6659 0 0 0.00% 0.00%
B 6967 6659 1 1 0.01% 0.02%
C 6966 6658 0 0 0.00% 0.00%
D 6966 6658 70 70 1.00% 1.05%

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 13 252 13522 80.7 791 775 157.9
A 13 254 11831 70.0 791 775 157.9
A 0 226 6899 38.77 791 775 157.9
B 0 230 29338 192.48 788 769 148.4
B 12 111 17195 110.67 788 769 148.4
B 11 111 14790 94.47 788 769 148.4
C 14 238 119634 675.08 754 756 176.1
C 10 22 9706 50.82 754 756 176.1
C 13 61 5444 26.62 754 756 176.1
D 1 52 251185 1356.01 762 740 184.7
D 7 238 158291 853.04 762 740 184.7
D 2 152 71203 381.51 762 740 184.7

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