ASTROSAT CZTI

Data Quality Report

Orbit 13242

Creation date: 2024-06-27T16:38:16.770388
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_077T01_9000001970_13242cztM0_level2.evt modeM0/AS1G08_077T01_9000001970_13242cztM0_level2_quad_clean.evt
Size (bytes)571,256,640110,131,200
Size544.8 MB 105.0 MB
Events in quadrant A3,211,087750,078
Events in quadrant B7,251,325636,738
Events in quadrant C3,075,301781,471
Events in quadrant D3,341,453733,139

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138213
B0258242
C0133872
D0142192

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6211580.933827%
B6211186730.059572%
C6211290.466914%
D62111151.851554%

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 7507 6213 0 0 0.00% 0.00%
B 7507 6212 1076 1076 14.33% 17.32%
C 7507 6213 1 1 0.01% 0.02%
D 7507 6213 72 72 0.96% 1.16%

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 15 239 104321 656.44 779 765 157.8
A 12 189 89856 564.75 779 765 157.8
A 1 162 9287 54.02 779 765 157.8
B 4 239 4679771 39254.54 644 629 119.2
B 0 214 15390 123.83 644 629 119.2
B 0 197 12601 100.44 644 629 119.2
C 15 208 21519 116.75 781 789 177.6
C 13 61 5793 28.18 781 789 177.6
C 8 128 3956 17.84 781 789 177.6
D 1 52 165873 900.59 768 747 183.4
D 10 157 76847 415.04 768 747 183.4
D 5 222 76504 413.17 768 747 183.4

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