ASTROSAT CZTI

Data Quality Report

Orbit 18786

Creation date: 2024-06-27T17:54:41.545245
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/AS1A05_024T01_9000002810_18786cztM0_level2.evt modeM0/AS1A05_024T01_9000002810_18786cztM0_level2_quad_clean.evt
Size (bytes)433,440,00083,064,960
Size413.4 MB 79.2 MB
Events in quadrant A3,361,165528,762
Events in quadrant B3,153,923541,765
Events in quadrant C3,164,408520,664
Events in quadrant D3,041,149506,887

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137271
B0130091
C0130841
D0127501

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59731522.544785%
B59731021.707685%
C59731342.243429%
D5973851.423070%

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 7153 5974 50 50 0.70% 0.84%
B 7153 5973 5 5 0.07% 0.08%
C 7153 5973 0 0 0.00% 0.00%
D 7153 5974 6 6 0.08% 0.10%

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 6 16 278690 1749.41 795 782 158.9
A 12 96 15115 90.23 795 782 158.9
A 13 254 9131 52.56 795 782 158.9
B 7 220 34610 229.17 788 769 147.7
B 12 111 16985 109.81 788 769 147.7
B 11 111 14991 96.31 788 769 147.7
C 14 238 122790 685.35 772 777 178.0
C 6 96 13526 71.61 772 777 178.0
C 5 112 13410 70.96 772 777 178.0
D 2 234 23618 120.64 783 760 189.5
D 7 223 22723 115.92 783 760 189.5
D 7 238 21556 109.76 783 760 189.5

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