ASTROSAT CZTI

Data Quality Report

Orbit 17121

Creation date: 2024-06-27T17:32:24.383729
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_056T01_9000002540_17121cztM0_level2.evt modeM0/AS1A05_056T01_9000002540_17121cztM0_level2_quad_clean.evt
Size (bytes)445,455,36098,294,400
Size424.8 MB 93.7 MB
Events in quadrant A3,183,390644,514
Events in quadrant B3,321,954665,382
Events in quadrant C3,393,150614,059
Events in quadrant D3,148,216597,344

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136822
B0140332
C0139592
D0139392

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6526320.490346%
B6526691.057309%
C6526510.781489%
D6526420.643580%

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 7751 6527 1 1 0.01% 0.02%
B 7751 6527 14 14 0.18% 0.21%
C 7751 6526 0 0 0.00% 0.00%
D 7751 6527 23 23 0.30% 0.35%

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 4 2 18440 107.54 819 805 164.0
A 12 189 14437 83.13 819 805 164.0
A 0 226 7143 38.65 819 805 164.0
B 0 229 93955 590.8 826 807 157.7
B 12 111 18828 114.3 826 807 157.7
B 11 111 16070 96.81 826 807 157.7
C 3 233 202494 1103.23 783 791 182.8
C 14 238 122041 663.18 783 791 182.8
C 5 112 10240 51.68 783 791 182.8
D 5 222 173810 898.36 783 760 192.6
D 2 234 23511 118.11 783 760 192.6
D 6 18 8710 41.27 783 760 192.6

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