ASTROSAT CZTI

Data Quality Report

Orbit 08164

Creation date: 2024-06-27T15:28:48.600929
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/AS1G07_043T01_9000001126_08164cztM0_level2.evt modeM0/AS1G07_043T01_9000001126_08164cztM0_level2_quad_clean.evt
Size (bytes)486,800,64068,627,520
Size464.2 MB 65.4 MB
Events in quadrant A3,235,014403,359
Events in quadrant B3,374,864409,443
Events in quadrant C4,086,488412,605
Events in quadrant D3,600,369394,497

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137183
B0140392
C0164212
D0148752

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65571372.089370%
B65571752.668903%
C65571993.034925%
D65572223.385695%

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 7737 6557 0 0 0.00% 0.00%
B 7737 6557 12 12 0.16% 0.18%
C 7737 6557 5 5 0.06% 0.08%
D 7737 6557 80 80 1.03% 1.22%

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 0 226 7801 41.16 837 820 169.6
A 12 194 7680 40.44 837 820 169.6
A 8 15 6375 32.75 837 820 169.6
B 10 16 72209 454.01 837 816 157.3
B 12 111 15500 93.38 837 816 157.3
B 0 219 14006 83.88 837 816 157.3
C 1 16 890613 4731.43 819 823 188.1
C 13 61 6351 29.39 819 823 188.1
C 11 1 2292 7.81 819 823 188.1
D 1 52 209890 1049.6 819 793 199.2
D 7 71 80490 400.05 819 793 199.2
D 12 227 65255 323.58 819 793 199.2

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