ASTROSAT CZTI

Data Quality Report

Orbit 12276

Creation date: 2024-06-27T16:24:51.197598
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/AS1G08_064T01_9000001814_12276cztM0_level2.evt modeM0/AS1G08_064T01_9000001814_12276cztM0_level2_quad_clean.evt
Size (bytes)627,022,08077,558,400
Size598.0 MB 74.0 MB
Events in quadrant A4,119,191470,145
Events in quadrant B6,817,584469,599
Events in quadrant C3,281,675474,691
Events in quadrant D4,304,196453,804

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166993
B0247262
C0142652
D0173372

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68871572.279657%
B6887144520.981559%
C6887891.292290%
D68872383.455786%

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 7904 6890 10 10 0.13% 0.15%
B 7904 6890 967 967 12.23% 14.03%
C 7904 6890 7 7 0.09% 0.10%
D 7904 6890 120 120 1.52% 1.74%

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 160611 927.92 850 834 172.2
A 1 162 132364 763.87 850 834 172.2
A 13 251 123847 714.41 850 834 172.2
B 4 239 1833088 12787.95 755 737 143.3
B 0 85 1452004 10128.37 755 737 143.3
B 3 64 310430 2161.34 755 737 143.3
C 14 234 39479 204.44 824 826 189.1
C 3 233 20564 104.4 824 826 189.1
C 13 61 6107 27.93 824 826 189.1
D 1 52 409571 2051.76 824 801 199.2
D 13 104 212988 1065.04 824 801 199.2
D 10 157 202062 1010.2 824 801 199.2

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