ASTROSAT CZTI

Data Quality Report

Orbit 23261

Creation date: 2024-06-27T18:52:00.083944
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/AS1A08_004T03_9000003438_23261cztM0_level2.evt modeM0/AS1A08_004T03_9000003438_23261cztM0_level2_quad_clean.evt
Size (bytes)493,917,12098,688,960
Size471.0 MB 94.1 MB
Events in quadrant A3,284,099653,899
Events in quadrant B3,361,382665,912
Events in quadrant C3,372,497617,787
Events in quadrant D4,503,891602,728

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136862
B0138262
C0138583
D0176462

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6431540.839683%
B6431620.964080%
C6430831.290824%
D64304216.547434%

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 7766 6432 0 0 0.00% 0.00%
B 7766 6432 1 1 0.01% 0.02%
C 7765 6431 4 4 0.05% 0.06%
D 7765 6431 355 355 4.57% 5.52%

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 13 254 10859 58.76 851 834 170.6
A 0 226 7360 38.25 851 834 170.6
A 3 137 7032 36.33 851 834 170.6
B 12 111 18057 109.66 848 831 157.1
B 0 228 17698 107.38 848 831 157.1
B 11 111 15944 96.21 848 831 157.1
C 14 238 129455 692.54 807 817 185.7
C 2 16 51841 274.69 807 817 185.7
C 10 9 20776 107.45 807 817 185.7
D 1 239 874661 4511.96 794 773 193.7
D 2 152 147699 758.59 794 773 193.7
D 2 120 126286 648.04 794 773 193.7

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