ASTROSAT CZTI

Data Quality Report

Orbit 22039

Creation date: 2024-06-27T18:35:41.441368
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/AS1A07_134T01_9000003256_22039cztM0_level2.evt modeM0/AS1A07_134T01_9000003256_22039cztM0_level2_quad_clean.evt
Size (bytes)612,000,00077,011,200
Size583.6 MB 73.4 MB
Events in quadrant A3,473,337472,887
Events in quadrant B3,600,732478,662
Events in quadrant C3,469,966460,051
Events in quadrant D7,504,114420,071

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148782
B0151472
C0147682
D0271784

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7177200.278668%
B7178530.738367%
C7178670.933408%
D717797913.640797%

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 8737 7177 0 0 0.00% 0.00%
B 8738 7179 13 13 0.15% 0.18%
C 8738 7179 0 0 0.00% 0.00%
D 8737 7177 924 924 10.58% 12.87%

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 5 16 100860 566.75 875 856 176.5
A 13 254 10856 56.67 875 856 176.5
A 3 137 7595 38.19 875 856 176.5
B 3 64 83707 492.8 875 853 168.1
B 0 230 52301 306.01 875 853 168.1
B 0 197 22845 130.81 875 853 168.1
C 14 238 133943 672.41 845 850 197.9
C 10 22 39893 197.25 845 850 197.9
C 13 61 6034 26.19 845 850 197.9
D 1 52 3710538 18729.22 810 785 198.1
D 11 176 615147 3101.69 810 785 198.1
D 2 136 40223 199.11 810 785 198.1

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