ASTROSAT CZTI

Data Quality Report

Orbit 36888

Creation date: 2024-06-27T21:32:51.451051
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_075T01_9000005244_36888cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36888cztM0_level2_quad_clean.evt
Size (bytes)157,930,56022,800,960
Size150.6 MB 21.7 MB
Events in quadrant A1,090,392184,866
Events in quadrant B358,7252,936
Events in quadrant C1,114,594182,685
Events in quadrant D2,068,126162,521

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06921
B07025
C07323
D07327

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A069162395
B03359989
C073082717
D0122364700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175
B0152
C0152
D0141

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A218160.275103%
B23112311100.000000%
C213590.421546%
D197323111.708059%

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 3884 2348 0 0 0.00% 0.00%
B 4483 2310 0 0 0.00% 0.00%
C 3863 2315 7 7 0.18% 0.30%
D 3841 2204 167 167 4.35% 7.58%

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 112229 2137.16 249 245 52.4
A 13 248 5573 101.68 249 245 52.4
A 13 254 3812 68.07 249 245 52.4
B 12 243 319415 132126.51 5 5 2.4
B 12 144 6040 2496.43 5 5 2.4
B 5 172 5910 2442.65 5 5 2.4
C 15 214 95567 1654.61 239 240 57.6
C 0 10 82153 1421.78 239 240 57.6
C 12 249 2089 32.09 239 240 57.6
D 12 235 921801 17450.82 211 204 52.8
D 13 249 253162 4789.86 211 204 52.8
D 12 233 22251 417.47 211 204 52.8

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