ASTROSAT CZTI

Data Quality Report

Orbit 11927

Creation date: 2024-06-27T16:20:10.079479
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_088T05_9000001764_11927cztM0_level2.evt modeM0/AS1A04_088T05_9000001764_11927cztM0_level2_quad_clean.evt
Size (bytes)63,529,92017,686,080
Size60.6 MB 16.9 MB
Events in quadrant A476,527118,821
Events in quadrant B461,948121,573
Events in quadrant C401,113119,678
Events in quadrant D528,932113,887

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019331
B018401
C016281
D020881

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76570.915033%
B76530.392157%
C76510.130719%
D76550.653595%

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 766 766 2 2 0.26% 0.26%
B 766 766 2 2 0.26% 0.26%
C 766 766 0 0 0.00% 0.00%
D 766 766 3 3 0.39% 0.39%

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 24641 1081.69 104 102 22.7
A 1 178 13448 588.3 104 102 22.7
A 1 161 11832 517.06 104 102 22.7
B 4 239 13124 605.57 104 102 21.5
B 4 80 13033 601.33 104 102 21.5
B 15 204 12661 584.04 104 102 21.5
C 0 207 2936 113.31 101 102 25.0
C 13 61 752 25.99 101 102 25.0
C 14 234 636 21.35 101 102 25.0
D 1 52 38497 1472.86 102 99 26.1
D 8 195 35843 1371.06 102 99 26.1
D 12 6 19507 744.44 102 99 26.1

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