ASTROSAT CZTI

Data Quality Report

Orbit 33491

Creation date: 2024-06-27T20:49:25.514547
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/AS1A11_060T01_9000004804_33491cztM0_level2.evt modeM0/AS1A11_060T01_9000004804_33491cztM0_level2_quad_clean.evt
Size (bytes)499,178,88071,735,040
Size476.1 MB 68.4 MB
Events in quadrant A2,541,231471,244
Events in quadrant B4,904,369423,958
Events in quadrant C3,144,398453,140
Events in quadrant D4,149,755433,645

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112343
B0181592
C0128822
D0160822

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A557060.107720%
B557082414.793537%
C5570290.520646%
D55701142.046679%

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 7243 5571 0 0 0.00% 0.00%
B 7243 5571 727 727 10.04% 13.05%
C 7243 5571 27 27 0.37% 0.48%
D 7243 5571 112 112 1.55% 2.01%

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 6 9927 69.69 654 641 133.2
A 13 254 9344 65.32 654 641 133.2
A 3 137 6699 45.47 654 641 133.2
B 5 255 1958573 16159.12 621 605 121.2
B 5 172 453410 3737.0 621 605 121.2
B 12 111 14784 117.02 621 605 121.2
C 15 214 239824 1622.57 635 641 147.4
C 14 67 181129 1224.4 635 641 147.4
C 0 10 112069 755.91 635 641 147.4
D 8 195 938636 6125.89 626 608 153.1
D 2 250 213781 1392.14 626 608 153.1
D 13 249 189814 1235.63 626 608 153.1

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