ASTROSAT CZTI

Data Quality Report

Orbit 35140

Creation date: 2022-03-29T12:32:19.419438
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_037T01_9000005030_35140cztM0_level2.evt modeM0/AS1A11_037T01_9000005030_35140cztM0_level2_quad_clean.evt
Size (bytes)92,010,24019,321,920
Size87.7 MB 18.4 MB
Events in quadrant A522,663131,232
Events in quadrant B562,050133,066
Events in quadrant C662,528124,685
Events in quadrant D968,083118,263

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021592
B022761
C025381
D035931

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A100520.199005%
B1005323.184080%
C1005494.875622%
D1005424.179104%

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 1005 1005 0 0 0.00% 0.00%
B 1005 1005 17 17 1.69% 1.69%
C 1005 1005 29 29 2.89% 2.89%
D 1005 1005 24 24 2.39% 2.39%

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 10 83 35317 1344.22 119 116 26.2
A 15 169 21743 825.87 119 116 26.2
A 13 6 3599 133.0 119 116 26.2
B 3 112 86124 3407.9 119 116 25.2
B 5 172 6126 238.13 119 116 25.2
B 12 111 2868 109.04 119 116 25.2
C 0 10 137329 4737.91 117 118 29.0
C 15 214 45394 1563.38 117 118 29.0
C 0 207 7333 249.13 117 118 29.0
D 5 223 214023 7245.42 116 112 29.5
D 8 195 194644 6589.03 116 112 29.5
D 12 79 44456 1501.98 116 112 29.5

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