ASTROSAT CZTI

Data Quality Report

Orbit 14730

Creation date: 2024-06-27T16:59:11.859598
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_081T01_9000002178_14730cztM0_level2.evt modeM0/AS1G08_081T01_9000002178_14730cztM0_level2_quad_clean.evt
Size (bytes)458,876,16078,837,120
Size437.6 MB 75.2 MB
Events in quadrant A3,504,521487,576
Events in quadrant B3,330,120486,592
Events in quadrant C3,289,804474,239
Events in quadrant D3,319,161473,539

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143633
B0138992
C0137752
D0142482

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6681731.092651%
B6681741.107619%
C6681390.583745%
D6681500.748391%

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 7722 6682 2 2 0.03% 0.03%
B 7722 6682 3 3 0.04% 0.04%
C 7722 6682 0 0 0.00% 0.00%
D 7722 6682 1 1 0.01% 0.01%

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 8 15 245626 1446.49 833 813 169.2
A 12 189 40437 234.12 833 813 169.2
A 9 143 13156 72.93 833 813 169.2
B 0 214 25024 153.44 824 805 157.8
B 0 205 22623 138.23 824 805 157.8
B 12 111 18695 113.34 824 805 157.8
C 3 233 168889 912.93 795 801 184.1
C 6 96 15429 79.45 795 801 184.1
C 4 254 6646 31.75 795 801 184.1
D 12 16 224481 1174.18 802 784 190.5
D 2 152 23489 119.18 802 784 190.5
D 2 234 22848 115.81 802 784 190.5

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