ASTROSAT CZTI

Data Quality Report

Orbit 09282

Creation date: 2024-06-27T15:43:53.071207
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/AS1G07_077T01_9000001306_09282cztM0_level2.evt modeM0/AS1G07_077T01_9000001306_09282cztM0_level2_quad_clean.evt
Size (bytes)547,447,68088,608,960
Size522.1 MB 84.5 MB
Events in quadrant A4,730,835529,472
Events in quadrant B3,718,058545,987
Events in quadrant C3,543,211547,416
Events in quadrant D4,060,718521,049

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0201881018
B017030729
C016768674
D018254994

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01682
B01684
C01679
D01686

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B071
C071
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77083394.398028%
B77583264.202114%
C77692172.793152%
D77162993.875065%

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 8743 7958 1 1 0.01% 0.01%
B 8744 7990 1 1 0.01% 0.01%
C 8744 7994 0 0 0.00% 0.00%
D 8744 7965 60 60 0.69% 0.75%

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 5 1153515 6190.16 902 878 186.2
A 1 162 40050 210.37 902 878 186.2
A 13 251 32359 169.07 902 878 186.2
B 0 214 50659 280.05 919 894 177.7
B 0 219 36317 199.34 919 894 177.7
B 8 234 23510 127.27 919 894 177.7
C 14 67 11466 50.71 900 902 208.3
C 10 22 10958 48.28 900 902 208.3
C 13 61 7033 29.43 900 902 208.3
D 1 52 284396 1296.92 879 852 218.6
D 12 233 139597 634.61 879 852 218.6
D 7 71 128978 586.04 879 852 218.6

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