ASTROSAT CZTI

Data Quality Report

Orbit 19231

Creation date: 2024-06-27T18:00:25.816589
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/AS1C04_001T01_9000002846_19231cztM0_level2.evt modeM0/AS1C04_001T01_9000002846_19231cztM0_level2_quad_clean.evt
Size (bytes)152,884,80017,907,840
Size145.8 MB 17.1 MB
Events in quadrant A1,032,76199,299
Events in quadrant B1,043,841102,035
Events in quadrant C1,209,40196,789
Events in quadrant D1,205,14397,290

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A042231
B042521
C049151
D048631

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2011552.734958%
B2011643.182496%
C2011793.928394%
D20111145.668821%

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 2921 2011 0 0 0.00% 0.00%
B 2921 2011 1 1 0.03% 0.05%
C 2921 2011 0 0 0.00% 0.00%
D 2921 2011 50 50 1.71% 2.49%

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 9 143 5649 97.3 266 260 55.4
A 13 254 2769 45.3 266 260 55.4
A 0 226 2299 36.81 266 260 55.4
B 12 111 6097 111.06 263 256 52.6
B 11 111 5489 99.5 263 256 52.6
B 14 111 4827 86.91 263 256 52.6
C 3 233 195515 3281.77 249 249 59.5
C 14 238 38437 641.81 249 249 59.5
C 5 4 2320 34.81 249 249 59.5
D 11 176 197156 3159.26 252 244 62.3
D 13 104 29315 466.42 252 244 62.3
D 7 96 17836 282.25 252 244 62.3

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