ASTROSAT CZTI

Data Quality Report

Orbit 14026

Creation date: 2024-06-27T16:49:20.371069
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/AS1G08_002T01_9000002072_14026cztM0_level2.evt modeM0/AS1G08_002T01_9000002072_14026cztM0_level2_quad_clean.evt
Size (bytes)485,648,640108,699,840
Size463.2 MB 103.7 MB
Events in quadrant A3,364,644716,847
Events in quadrant B3,355,455724,410
Events in quadrant C3,325,817725,936
Events in quadrant D4,236,342687,156

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138613
B0138842
C0137142
D0167962

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6279991.576684%
B6279991.576684%
C6279701.114827%
D62801402.229299%

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 7590 6281 9 9 0.12% 0.14%
B 7590 6281 4 4 0.05% 0.06%
C 7590 6281 0 0 0.00% 0.00%
D 7591 6282 55 55 0.72% 0.88%

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 12 189 89118 525.23 837 822 168.1
A 8 15 51561 301.82 837 822 168.1
A 0 226 7334 38.74 837 822 168.1
B 4 173 51983 329.73 827 807 155.2
B 10 16 31565 198.17 827 807 155.2
B 0 189 28762 180.11 827 807 155.2
C 3 233 108757 570.51 825 831 189.2
C 13 61 5713 25.81 825 831 189.2
C 12 4 3451 13.85 825 831 189.2
D 10 157 405094 1866.26 811 798 216.6
D 8 195 266374 1225.92 811 798 216.6
D 12 110 166533 765.04 811 798 216.6

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