ASTROSAT CZTI

Data Quality Report

Orbit 34938

Creation date: 2022-03-15T20:47:38.589525
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_9000005008_34938cztM0_level2.evt modeM0/AS1A11_069T01_9000005008_34938cztM0_level2_quad_clean.evt
Size (bytes)212,958,72020,024,640
Size203.1 MB 19.1 MB
Events in quadrant A2,221,682114,346
Events in quadrant B1,269,945126,415
Events in quadrant C1,014,149123,194
Events in quadrant D1,824,366114,625

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A077592
B048391
C039381
D066181

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A172742724.724957%
B17271418.164447%
C1727553.184713%
D17271257.237985%

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 3339 1728 319 319 9.55% 18.46%
B 3339 1728 97 97 2.91% 5.61%
C 3339 1728 43 43 1.29% 2.49%
D 3339 1728 107 107 3.20% 6.19%

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 1403832 32658.92 203 199 43.0
A 10 83 28659 662.19 203 199 43.0
A 13 254 2724 58.75 203 199 43.0
B 5 172 407459 9725.95 206 200 41.9
B 0 244 17092 403.41 206 200 41.9
B 0 190 15212 358.51 206 200 41.9
C 0 10 121633 2477.51 205 207 49.0
C 15 214 74373 1513.24 205 207 49.0
C 15 159 5839 114.91 205 207 49.0
D 1 52 541375 10406.77 204 198 52.0
D 8 195 158457 3043.3 204 198 52.0
D 2 31 96504 1851.95 204 198 52.0

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