ASTROSAT CZTI

Data Quality Report

Orbit 35448

Creation date: 2022-04-20T23:34:09.992639
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_068T03_9000005076_35448cztM0_level2.evt modeM0/AS1A11_068T03_9000005076_35448cztM0_level2_quad_clean.evt
Size (bytes)253,866,24034,902,720
Size242.1 MB 33.3 MB
Events in quadrant A1,508,108217,329
Events in quadrant B2,433,251216,100
Events in quadrant C1,705,616212,566
Events in quadrant D1,840,676201,159

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A061352
B092741
C066701
D073071

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A293540.136286%
B29351153.918228%
C2935501.703578%
D2935602.044293%

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 4818 2936 0 0 0.00% 0.00%
B 4818 2936 54 54 1.12% 1.84%
C 4818 2936 35 35 0.73% 1.19%
D 4818 2936 44 44 0.91% 1.50%

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 64682 846.33 370 363 76.0
A 13 6 5403 66.32 370 363 76.0
A 3 137 3852 45.91 370 363 76.0
B 4 251 676719 9443.97 365 356 71.6
B 5 200 100800 1402.49 365 356 71.6
B 5 236 78204 1086.98 365 356 71.6
C 0 10 133055 1565.56 358 361 84.8
C 15 214 120574 1418.31 358 361 84.8
C 0 207 34612 404.1 358 361 84.8
D 13 249 160279 1805.63 355 345 88.6
D 1 47 50560 566.92 355 345 88.6
D 8 195 50342 564.46 355 345 88.6

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