ASTROSAT CZTI

Data Quality Report

Orbit 28057

Creation date: 2024-06-27T19:47:35.115453
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/AS1A10_057T02_9000004054_28057cztM0_level2.evt modeM0/AS1A10_057T02_9000004054_28057cztM0_level2_quad_clean.evt
Size (bytes)665,484,48093,165,120
Size634.7 MB 88.8 MB
Events in quadrant A3,956,214593,215
Events in quadrant B3,912,064589,529
Events in quadrant C4,458,161564,379
Events in quadrant D7,303,946535,838

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167400
B0166360
C0183960
D0271220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77351181.525533%
B77351682.171946%
C77352993.865546%
D77356177.976729%

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 7930 7736 6 6 0.08% 0.08%
B 7930 7736 4 4 0.05% 0.05%
C 7930 7736 62 62 0.78% 0.80%
D 7930 7735 340 340 4.29% 4.40%

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 0 13 123171 625.41 965 946 195.4
A 12 96 98966 501.56 965 946 195.4
A 13 254 14098 67.3 965 946 195.4
B 15 32 66133 360.2 951 926 181.0
B 4 52 38260 206.23 951 926 181.0
B 12 111 22287 118.0 951 926 181.0
C 3 233 743130 3472.38 911 915 213.7
C 14 238 144975 673.97 911 915 213.7
C 8 128 11241 48.31 911 915 213.7
D 8 195 2653446 12203.31 899 874 217.4
D 7 223 500710 2299.52 899 874 217.4
D 1 52 287627 1319.22 899 874 217.4

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