ASTROSAT CZTI

Data Quality Report

Orbit 08765

Creation date: 2024-06-27T15:36:54.033400
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/AS1A03_038T01_9000001218_08765cztM0_level2.evt modeM0/AS1A03_038T01_9000001218_08765cztM0_level2_quad_clean.evt
Size (bytes)786,830,400109,146,240
Size750.4 MB 104.1 MB
Events in quadrant A4,469,961692,827
Events in quadrant B4,329,054703,802
Events in quadrant C4,251,623697,666
Events in quadrant D10,149,236565,903

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151
B0150
C0151
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01928999
B01899757
C01902672
D036808285

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01900
B01900
C01900
D01900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A92851371.475498%
B93051261.354111%
C9297820.882005%
D9269221023.842917%

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 10774 9324 5 5 0.05% 0.05%
B 10774 9326 0 0 0.00% 0.00%
C 10774 9326 1 1 0.01% 0.01%
D 10774 9305 1993 1993 18.50% 21.42%

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 13 251 181506 794.57 1107 1080 227.1
A 5 16 20128 83.88 1107 1080 227.1
A 0 226 10219 40.25 1107 1080 227.1
B 12 111 24683 109.79 1113 1085 214.9
B 11 111 19972 87.88 1113 1085 214.9
B 14 111 15085 65.14 1113 1085 214.9
C 9 54 13077 47.37 1084 1089 253.1
C 13 61 8261 28.34 1084 1089 253.1
C 12 4 7110 23.79 1084 1089 253.1
D 2 16 6038180 24534.01 952 930 246.1
D 1 52 225527 912.71 952 930 246.1
D 13 122 75755 304.07 952 930 246.1

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