ASTROSAT CZTI

Data Quality Report

Orbit 11885

Creation date: 2024-06-27T16:19:35.536067
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/AS1T01_209T01_9000001758_11885cztM0_level2.evt modeM0/AS1T01_209T01_9000001758_11885cztM0_level2_quad_clean.evt
Size (bytes)479,744,640102,412,800
Size457.5 MB 97.7 MB
Events in quadrant A3,362,369665,796
Events in quadrant B3,951,375672,583
Events in quadrant C3,008,834669,302
Events in quadrant D3,754,634630,076

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143123
B0159952
C0134902
D0154742

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6649660.992630%
B66492223.338848%
C6649280.421116%
D6649771.158069%

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 7735 6651 6 6 0.08% 0.09%
B 7735 6651 78 78 1.01% 1.17%
C 7735 6651 0 0 0.00% 0.00%
D 7735 6651 44 44 0.57% 0.66%

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 7 144 117831 743.56 778 761 157.4
A 1 162 82698 520.41 778 761 157.4
A 1 178 42242 263.46 778 761 157.4
B 4 239 621853 4252.85 784 765 146.0
B 15 204 107570 731.34 784 765 146.0
B 0 214 59730 403.76 784 765 146.0
C 8 128 7725 39.63 767 771 175.5
C 13 61 5790 28.6 767 771 175.5
C 8 112 4719 22.5 767 771 175.5
D 8 195 393204 2184.7 755 733 179.6
D 12 233 148220 820.99 755 733 179.6
D 13 104 73932 407.46 755 733 179.6

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