ASTROSAT CZTI

Data Quality Report

Orbit 33843

Creation date: 2024-06-27T20:53:15.460019
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_106T03_9000004826_33843cztM0_level2.evt modeM0/AS1A11_106T03_9000004826_33843cztM0_level2_quad_clean.evt
Size (bytes)312,053,76033,439,680
Size297.6 MB 31.9 MB
Events in quadrant A2,071,000203,758
Events in quadrant B2,032,639196,012
Events in quadrant C2,050,427200,098
Events in quadrant D3,083,121189,240

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A083621
B080641
C080741
D0114961

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3137411.306981%
B3137912.900861%
C3137581.848900%
D31371123.570290%

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 3137 3137 15 15 0.48% 0.48%
B 3137 3137 66 66 2.10% 2.10%
C 3137 3137 49 49 1.56% 1.56%
D 3137 3137 92 92 2.93% 2.93%

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 421395 5054.79 417 410 83.3
A 7 16 16399 191.98 417 410 83.3
A 13 6 11540 133.64 417 410 83.3
B 5 172 335767 4374.85 408 400 76.7
B 0 199 34426 443.87 408 400 76.7
B 0 219 23099 296.11 408 400 76.7
C 14 254 183965 1987.75 405 409 92.3
C 15 214 136277 1471.33 405 409 92.3
C 0 10 73797 794.72 405 409 92.3
D 8 195 698182 6321.6 404 394 110.4
D 12 235 272180 2462.24 404 394 110.4
D 2 250 206955 1871.34 404 394 110.4

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