ASTROSAT CZTI

Data Quality Report

Orbit 11797

Creation date: 2024-06-27T16:18:24.593560
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_058T09_9000001744_11797cztM0_level2.evt modeM0/AS1G08_058T09_9000001744_11797cztM0_level2_quad_clean.evt
Size (bytes)483,073,92063,694,080
Size460.7 MB 60.7 MB
Events in quadrant A3,791,273370,470
Events in quadrant B3,943,004376,050
Events in quadrant C3,123,021377,029
Events in quadrant D3,338,722358,848

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153343
B0156302
C0132202
D0141372

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63921131.767835%
B63921652.581352%
C6392440.688360%
D63921031.611389%

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 7713 6394 5 5 0.06% 0.08%
B 7713 6394 58 58 0.75% 0.91%
C 7713 6394 0 0 0.00% 0.00%
D 7713 6394 51 51 0.66% 0.80%

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 386293 2352.32 818 802 163.9
A 1 162 109171 661.28 818 802 163.9
A 1 178 51897 311.79 818 802 163.9
B 4 239 337111 2172.73 824 805 154.8
B 3 64 108951 698.69 824 805 154.8
B 11 51 107244 687.66 824 805 154.8
C 13 61 5775 27.05 800 804 183.7
C 14 234 4397 19.55 800 804 183.7
C 3 202 1956 6.27 800 804 183.7
D 13 104 115811 616.28 788 765 186.7
D 13 249 67723 358.68 788 765 186.7
D 1 52 56835 300.36 788 765 186.7

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