ASTROSAT CZTI

Data Quality Report

Orbit 00867

Creation date: 2024-06-27T14:04:02.173004
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/AS1P01_161T02_9000000124_00867cztM0_level2.evt modeM0/AS1P01_161T02_9000000124_00867cztM0_level2_quad_clean.evt
Size (bytes)972,817,92084,087,360
Size927.8 MB 80.2 MB
Events in quadrant A7,292,456538,270
Events in quadrant B7,599,507537,015
Events in quadrant C7,234,027525,969
Events in quadrant D6,927,438515,491

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260100
B0269110
C0258660
D0249410

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6151180.292635%
B6151140.227605%
C6152190.308843%
D6152300.487646%

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 7421 6151 198 198 2.67% 3.22%
B 7421 6151 204 204 2.75% 3.32%
C 7422 6153 146 146 1.97% 2.37%
D 7422 6152 168 168 2.26% 2.73%

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 12 189 8594 14.86 1895 1903 450.4
A 11 79 6879 11.05 1895 1903 450.4
A 0 214 5884 8.84 1895 1903 450.4
B 0 220 80199 171.55 1960 1969 456.0
B 15 255 25659 51.95 1960 1969 456.0
B 5 249 14120 26.65 1960 1969 456.0
C 8 208 33411 62.77 1824 1886 502.2
C 3 111 26667 49.34 1824 1886 502.2
C 3 79 21507 39.07 1824 1886 502.2
D 13 169 84352 152.03 1771 1830 542.8
D 12 188 73758 132.51 1771 1830 542.8
D 1 4 53334 94.88 1771 1830 542.8

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