ASTROSAT CZTI

Data Quality Report

Orbit 26170

Creation date: 2024-06-27T19:25:37.729729
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/AS1A09_138T04_9000003776_26170cztM0_level2.evt modeM0/AS1A09_138T04_9000003776_26170cztM0_level2_quad_clean.evt
Size (bytes)476,049,600113,590,080
Size454.0 MB 108.3 MB
Events in quadrant A3,240,403749,158
Events in quadrant B3,308,830779,159
Events in quadrant C3,869,451747,131
Events in quadrant D3,583,965738,398

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132920
B0135650
C0154780
D0145430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6109180.294647%
B6109340.556556%
C61091913.126535%
D6109350.572925%

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 7514 6110 0 0 0.00% 0.00%
B 7514 6109 1 1 0.01% 0.02%
C 7514 6109 81 81 1.08% 1.33%
D 7514 6109 20 20 0.27% 0.33%

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 10183 56.87 837 823 164.6
A 0 226 7098 38.13 837 823 164.6
A 3 137 7077 38.0 837 823 164.6
B 12 111 18230 111.82 841 822 155.7
B 11 111 15906 96.89 841 822 155.7
B 14 111 14721 89.28 841 822 155.7
C 2 16 443904 2321.04 827 835 190.9
C 14 238 136513 710.76 827 835 190.9
C 3 233 64522 333.63 827 835 190.9
D 1 52 402290 2045.06 837 821 196.3
D 2 234 24881 122.56 837 821 196.3
D 8 195 12028 57.09 837 821 196.3

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