ASTROSAT CZTI

Data Quality Report

Orbit 33222

Creation date: 2024-06-27T20:46:15.909709
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/AS1T04_066T01_9000004772_33222cztM0_level2.evt modeM0/AS1T04_066T01_9000004772_33222cztM0_level2_quad_clean.evt
Size (bytes)267,289,92045,368,640
Size254.9 MB 43.3 MB
Events in quadrant A1,127,120329,162
Events in quadrant B2,055,212306,925
Events in quadrant C1,187,870312,620
Events in quadrant D3,581,368273,073

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A044721
B075371
C047401
D0120821

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A209050.239234%
B209027112.966507%
C2090321.531100%
D209070233.588517%

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 2090 2090 1 1 0.05% 0.05%
B 2090 2090 199 199 9.52% 9.52%
C 2090 2090 25 25 1.20% 1.20%
D 2090 2090 781 781 37.37% 37.37%

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 14 254 21120 364.39 280 275 57.2
A 15 47 13147 225.01 280 275 57.2
A 13 6 6801 114.08 280 275 57.2
B 5 172 732691 14692.94 259 254 49.8
B 4 170 196665 3940.07 259 254 49.8
B 0 190 24433 485.04 259 254 49.8
C 0 10 94563 1563.52 261 264 60.3
C 14 254 23385 383.36 261 264 60.3
C 9 187 18141 296.41 261 264 60.3
D 8 195 2014815 29227.26 253 246 68.9
D 2 249 120898 1750.41 253 246 68.9
D 12 218 114869 1662.94 253 246 68.9

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