ASTROSAT CZTI

Data Quality Report

Orbit 01023

Creation date: 2024-06-27T14:06:18.745265
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/AS1P01_998T02_9000000190_01023cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01023cztM0_level2_quad_clean.evt
Size (bytes)1,107,768,96097,992,000
Size1.0 GB 93.5 MB
Events in quadrant A7,209,390694,263
Events in quadrant B7,464,461703,426
Events in quadrant C7,099,920677,328
Events in quadrant D11,365,315460,311

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258133
B0265801
C0254771
D0384951

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6182190.307344%
B6182230.372048%
C6182100.161760%
D6183216835.063885%

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 7183 6184 130 130 1.81% 2.10%
B 7183 6184 155 155 2.16% 2.51%
C 7183 6184 97 97 1.35% 1.57%
D 7184 6184 2312 2312 32.18% 37.39%

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 34 15335 30.14 1867 1887 446.2
A 12 189 12665 24.15 1867 1887 446.2
A 4 32 11356 21.22 1867 1887 446.2
B 5 249 26625 53.85 1934 1946 458.3
B 15 22 25980 52.45 1934 1946 458.3
B 15 85 14359 27.09 1934 1946 458.3
C 15 241 307826 632.02 1726 1782 484.2
C 3 111 24471 46.86 1726 1782 484.2
C 3 79 23962 45.8 1726 1782 484.2
D 12 22 6763260 17954.85 1215 1258 376.6
D 1 83 43963 113.39 1215 1258 376.6
D 2 63 6727 14.52 1215 1258 376.6

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