ASTROSAT CZTI

Data Quality Report

Orbit 34701

Creation date: 2022-03-04T10:35:20.569637
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/AS1A11_069T01_9000004972_34701cztM0_level2.evt modeM0/AS1A11_069T01_9000004972_34701cztM0_level2_quad_clean.evt
Size (bytes)71,138,88012,533,760
Size67.8 MB 12.0 MB
Events in quadrant A502,38578,450
Events in quadrant B465,04880,768
Events in quadrant C507,76678,280
Events in quadrant D617,38573,913

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020652
B018831
C019711
D023891

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85930.349243%
B859151.746217%
C859222.561118%
D859141.629802%

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 859 859 0 0 0.00% 0.00%
B 859 859 5 5 0.58% 0.58%
C 859 859 18 18 2.10% 2.10%
D 859 859 7 7 0.81% 0.81%

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 15 169 65519 2743.53 106 104 23.8
A 10 83 19516 814.15 106 104 23.8
A 13 6 2264 90.59 106 104 23.8
B 5 255 28250 1244.46 104 101 22.6
B 15 201 17762 780.79 104 101 22.6
B 5 172 5147 223.08 104 101 22.6
C 0 10 72781 2863.81 100 100 25.4
C 15 214 41752 1641.19 100 100 25.4
C 14 67 1713 63.56 100 100 25.4
D 8 195 146430 5342.71 102 98 27.4
D 2 250 26993 981.96 102 98 27.4
D 12 6 26649 969.4 102 98 27.4

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