ASTROSAT CZTI

Data Quality Report

Orbit 13665

Creation date: 2024-06-27T16:44:47.636690
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/AS1T02_039T01_9000002026_13665cztM0_level2.evt modeM0/AS1T02_039T01_9000002026_13665cztM0_level2_quad_clean.evt
Size (bytes)63,463,68019,998,720
Size60.5 MB 19.1 MB
Events in quadrant A454,669137,013
Events in quadrant B472,827139,852
Events in quadrant C460,403134,551
Events in quadrant D474,526128,468

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017740
B018930
C018180
D018800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82300.000000%
B82320.243013%
C82300.000000%
D82340.486027%

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 824 824 0 0 0.00% 0.00%
B 824 824 0 0 0.00% 0.00%
C 824 824 0 0 0.00% 0.00%
D 824 824 5 5 0.61% 0.61%

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 1 162 1653 59.43 117 115 25.9
A 0 226 1017 34.85 117 115 25.9
A 12 194 882 29.64 117 115 25.9
B 0 219 14917 606.45 115 113 24.4
B 12 111 2421 94.55 115 113 24.4
B 0 229 2183 84.8 115 113 24.4
C 3 233 29766 1093.38 110 111 27.1
C 13 61 826 26.36 110 111 27.1
C 3 202 279 6.19 110 111 27.1
D 1 52 13616 463.6 111 108 29.1
D 8 195 12970 441.43 111 108 29.1
D 14 35 11832 402.37 111 108 29.1

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