ASTROSAT CZTI

Data Quality Report

Orbit 20929

Creation date: 2024-06-27T18:21:20.005130
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_025T17_9000003084_20929cztM0_level2.evt modeM0/AS1A05_025T17_9000003084_20929cztM0_level2_quad_clean.evt
Size (bytes)477,613,440120,240,000
Size455.5 MB 114.7 MB
Events in quadrant A3,269,666801,813
Events in quadrant B3,542,054820,730
Events in quadrant C3,386,856802,643
Events in quadrant D3,828,222766,865

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136102
B0145002
C0139662
D0154003

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6451320.496047%
B6451530.821578%
C6451731.131608%
D64501542.387597%

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 7791 6452 6 6 0.08% 0.09%
B 7791 6452 7 7 0.09% 0.11%
C 7791 6452 0 0 0.00% 0.00%
D 7790 6451 123 123 1.58% 1.91%

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 15 174 23822 139.32 844 830 165.0
A 0 226 7295 39.18 844 830 165.0
A 3 137 6221 32.67 844 830 165.0
B 0 229 57779 369.03 851 832 154.3
B 7 220 34175 216.07 851 832 154.3
B 0 230 33361 210.79 851 832 154.3
C 14 238 134702 703.92 832 840 190.2
C 13 61 5837 26.27 832 840 190.2
C 7 247 4103 17.16 832 840 190.2
D 9 1 364464 1838.22 827 803 197.8
D 1 52 210051 1057.7 827 803 197.8
D 1 20 52840 263.03 827 803 197.8

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