ASTROSAT CZTI

Data Quality Report

Orbit 09002

Creation date: 2024-06-27T15:39:58.672180
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/AS1C02_037T01_9000001252_09002cztM0_level2.evt modeM0/AS1C02_037T01_9000001252_09002cztM0_level2_quad_clean.evt
Size (bytes)488,882,88087,793,920
Size466.2 MB 83.7 MB
Events in quadrant A4,063,456560,469
Events in quadrant B3,450,649569,289
Events in quadrant C3,164,279551,003
Events in quadrant D3,693,714532,010

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164813
B0141072
C0134342
D0149172

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63961312.048155%
B63961181.844903%
C6396881.375860%
D63961231.923077%

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 7591 6396 6 6 0.08% 0.09%
B 7591 6396 4 4 0.05% 0.06%
C 7591 6396 6 6 0.08% 0.09%
D 7591 6396 28 28 0.37% 0.44%

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 5 673118 3970.92 841 825 169.3
A 3 1 109612 642.55 841 825 169.3
A 5 16 18547 104.68 841 825 169.3
B 6 51 63923 397.57 838 822 158.7
B 0 230 34661 213.2 838 822 158.7
B 0 219 27032 165.13 838 822 158.7
C 9 68 34668 181.71 801 805 186.4
C 1 3 6659 31.41 801 805 186.4
C 13 61 5985 27.79 801 805 186.4
D 1 52 273321 1243.5 804 789 219.2
D 14 50 132997 603.23 804 789 219.2
D 12 233 73135 330.1 804 789 219.2

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