ASTROSAT CZTI

Data Quality Report

Orbit 33255

Creation date: 2024-06-27T20:46:42.924305
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_047T10_9000004778_33255cztM0_level2.evt modeM0/AS1A11_047T10_9000004778_33255cztM0_level2_quad_clean.evt
Size (bytes)727,568,64093,634,560
Size693.9 MB 89.3 MB
Events in quadrant A8,753,438546,012
Events in quadrant B3,925,045620,999
Events in quadrant C3,150,232625,601
Events in quadrant D5,775,991598,332

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0304802
B0159811
C0137611
D0216121

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6365237237.266300%
B63652654.163394%
C63651021.602514%
D63652283.582090%

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 9021 6367 1657 1657 18.37% 26.02%
B 9021 6367 175 175 1.94% 2.75%
C 9021 6367 86 86 0.95% 1.35%
D 9021 6367 177 177 1.96% 2.78%

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 6320782 50766.3 626 613 124.5
A 13 6 9989 75.31 626 613 124.5
A 13 254 9688 72.89 626 613 124.5
B 5 172 637369 4640.82 720 703 137.2
B 5 200 104317 755.27 720 703 137.2
B 0 219 82967 599.64 720 703 137.2
C 0 10 279988 1705.9 709 715 163.7
C 3 233 41483 249.03 709 715 163.7
C 1 23 14071 81.58 709 715 163.7
D 8 195 1748611 9377.24 703 687 186.4
D 7 223 257040 1375.28 703 687 186.4
D 2 249 192233 1027.6 703 687 186.4

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