ASTROSAT CZTI

Data Quality Report

Orbit 07639

Creation date: 2024-06-27T15:22:04.998315
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/AS1G06_016T01_9000001052_07639cztM0_level2.evt modeM0/AS1G06_016T01_9000001052_07639cztM0_level2_quad_clean.evt
Size (bytes)642,438,72086,662,080
Size612.7 MB 82.6 MB
Events in quadrant A3,986,888549,268
Events in quadrant B3,294,114559,158
Events in quadrant C8,038,980505,557
Events in quadrant D3,671,350531,092

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162583
B0141152
C0287572
D0154002

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68722433.536088%
B6872610.887660%
C687283012.077998%
D68721231.789872%

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 7982 6873 142 142 1.78% 2.07%
B 7982 6873 2 2 0.03% 0.03%
C 7982 6873 783 783 9.81% 11.39%
D 7982 6872 56 56 0.70% 0.81%

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 0 128 795033 4736.89 826 807 167.7
A 0 226 7877 42.16 826 807 167.7
A 12 194 7442 39.57 826 807 167.7
B 4 81 25573 156.68 831 811 158.0
B 0 219 17579 106.1 831 811 158.0
B 12 111 17112 103.14 831 811 158.0
C 9 68 5034792 28363.9 769 773 177.5
C 13 61 5646 27.46 769 773 177.5
C 1 16 3109 13.16 769 773 177.5
D 2 152 229793 1159.83 804 776 197.5
D 14 34 190725 961.97 804 776 197.5
D 2 14 71154 356.42 804 776 197.5

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