ASTROSAT CZTI

Data Quality Report

Orbit 46418

Creation date: 2024-06-27T23:22:58.675593
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/AS1A13_033T03_9000006206_46418cztM0_level2.fits modeM0/AS1A13_033T03_9000006206_46418cztM0_level2_quad_clean.evt
Size (bytes)491,397,120112,294,080
Size468.6 MB 107.1 MB
Events in quadrant A6,128,708750,318
Events in quadrant B3,310,540790,929
Events in quadrant C3,932,305728,846
Events in quadrant D4,298,848664,533

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223271
B0141561
C0161761
D0174391

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66893084.604575%
B66891852.765735%
C66903635.426009%
D66904266.367713%

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 7699 6689 3 3 0.04% 0.04%
B 7699 6689 1 1 0.01% 0.01%
C 7700 6690 129 129 1.68% 1.93%
D 7700 6690 265 265 3.44% 3.96%

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 10 83 2952897 17608.33 808 791 167.7
A 2 247 23941 138.08 808 791 167.7
A 13 254 15053 85.07 808 791 167.7
B 0 190 48816 298.21 808 784 161.1
B 0 245 43662 266.21 808 784 161.1
B 12 111 20973 125.34 808 784 161.1
C 14 254 836021 4546.31 779 784 183.7
C 12 2 25799 136.16 779 784 183.7
C 3 233 20657 108.17 779 784 183.7
D 13 249 613589 3165.8 784 760 193.6
D 2 37 390153 2011.56 784 760 193.6
D 0 240 167866 863.25 784 760 193.6

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