ASTROSAT CZTI

Data Quality Report

Orbit 33295

Creation date: 2024-06-27T20:45:02.377122
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_008T06_9000004762_33295cztM0_level2.evt modeM0/AS1A11_008T06_9000004762_33295cztM0_level2_quad_clean.evt
Size (bytes)134,668,80011,410,560
Size128.4 MB 10.9 MB
Events in quadrant A778,50665,729
Events in quadrant B1,039,75260,186
Events in quadrant C1,071,73756,274
Events in quadrant D1,084,91652,626

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205
B0207
C0207
D0206

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07438
B07438
C07438
D07537

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A075164377
B096985707
C0100585949
D0116527499

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A150520.132890%
B1455735.017182%
C1486895.989233%
D1385443.176895%

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 5630 1740 0 0 0.00% 0.00%
B 5616 1672 45 45 0.80% 2.69%
C 5610 1722 66 66 1.18% 3.83%
D 5587 1554 31 31 0.55% 1.99%

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 29492 741.89 188 184 39.5
A 15 47 16969 424.89 188 184 39.5
A 13 6 3582 86.02 188 184 39.5
B 5 172 179915 5177.0 175 171 34.7
B 0 219 133319 3834.94 175 171 34.7
B 0 214 7947 223.96 175 171 34.7
C 10 49 174218 4166.61 173 174 41.8
C 0 10 72486 1731.15 173 174 41.8
C 15 214 65374 1560.89 173 174 41.8
D 8 195 203289 4406.26 164 161 46.1
D 2 250 62246 1346.75 164 161 46.1
D 7 223 60715 1313.54 164 161 46.1

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