ASTROSAT CZTI

Data Quality Report

Orbit 23747

Creation date: 2024-06-27T18:58:15.415551
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_009T01_9000003516_23747cztM0_level2.evt modeM0/AS1A08_009T01_9000003516_23747cztM0_level2_quad_clean.evt
Size (bytes)1,210,536,000219,479,040
Size1.1 GB 209.3 MB
Events in quadrant A8,147,5591,377,641
Events in quadrant B8,816,0291,396,544
Events in quadrant C8,381,0501,341,181
Events in quadrant D10,120,6201,312,927

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03600
B03600
C03600
D03600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0359053
B0372553
C0361373
D0408663

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A176841801.017869%
B176852381.345773%
C176852601.470172%
D176852371.340119%

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 19694 17685 0 0 0.00% 0.00%
B 19695 17686 22 22 0.11% 0.12%
C 19695 17686 2 2 0.01% 0.01%
D 19695 17686 86 86 0.44% 0.49%

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 31312 69.25 2111 2062 422.4
A 3 137 19080 40.29 2111 2062 422.4
A 0 226 18105 37.98 2111 2062 422.4
B 3 64 223473 554.47 2101 2047 399.3
B 0 229 124612 306.91 2101 2047 399.3
B 0 189 122314 301.16 2101 2047 399.3
C 14 238 319973 674.52 2023 2030 471.4
C 7 247 155299 325.16 2023 2030 471.4
C 13 61 14089 25.58 2023 2030 471.4
D 8 195 1915072 3887.95 2042 1983 492.1
D 1 52 275860 556.6 2042 1983 492.1
D 13 174 90197 179.28 2042 1983 492.1

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