ASTROSAT CZTI

Data Quality Report

Orbit 11986

Creation date: 2024-06-27T16:20:55.910804
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/AS1A04_082T01_9000001772_11986cztM0_level2.evt modeM0/AS1A04_082T01_9000001772_11986cztM0_level2_quad_clean.evt
Size (bytes)526,253,76093,067,200
Size501.9 MB 88.8 MB
Events in quadrant A3,402,928600,074
Events in quadrant B3,875,292611,451
Events in quadrant C2,953,511598,133
Events in quadrant D5,256,777547,371

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145813
B0159432
C0134642
D0203932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6608550.832324%
B66082173.283898%
C660860.090799%
D660898814.951574%

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 7764 6610 2 2 0.03% 0.03%
B 7764 6610 121 121 1.56% 1.83%
C 7764 6610 0 0 0.00% 0.00%
D 7764 6609 878 878 11.31% 13.28%

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 1 162 160430 1016.3 772 756 157.1
A 1 178 85974 542.4 772 756 157.1
A 1 161 74536 469.6 772 756 157.1
B 4 239 692768 4718.07 779 761 146.7
B 15 204 46312 310.56 779 761 146.7
B 11 51 32325 215.2 779 761 146.7
C 8 208 7476 38.64 755 761 173.8
C 13 61 5478 27.14 755 761 173.8
C 12 4 1834 6.17 755 761 173.8
D 1 52 2402839 14171.96 703 682 169.5
D 8 195 76870 449.48 703 682 169.5
D 13 104 45299 263.23 703 682 169.5

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