ASTROSAT CZTI

Data Quality Report

Orbit 22416

Creation date: 2024-06-27T18:40:42.969174
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/AS1A07_007T03_9000003320_22416cztM0_level2.evt modeM0/AS1A07_007T03_9000003320_22416cztM0_level2_quad_clean.evt
Size (bytes)402,958,08092,039,040
Size384.3 MB 87.8 MB
Events in quadrant A2,789,066607,439
Events in quadrant B2,905,679610,508
Events in quadrant C2,887,774581,098
Events in quadrant D3,213,607570,039

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123561
B0126171
C0124901
D0134541

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5987570.952063%
B5987530.885251%
C5987771.286120%
D5987851.419743%

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 6932 5987 0 0 0.00% 0.00%
B 6932 5987 5 5 0.07% 0.08%
C 6932 5987 0 0 0.00% 0.00%
D 6932 5987 47 47 0.68% 0.79%

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 13 254 8511 53.3 722 706 146.4
A 3 137 6120 36.97 722 706 146.4
A 0 226 6088 36.75 722 706 146.4
B 0 190 54763 397.08 716 699 136.2
B 0 228 20614 146.27 716 699 136.2
B 12 111 16324 114.76 716 699 136.2
C 14 238 109916 669.05 694 698 163.2
C 1 16 41584 250.46 694 698 163.2
C 9 54 25719 153.27 694 698 163.2
D 1 52 271195 1594.64 703 683 169.6
D 13 249 160069 939.56 703 683 169.6
D 12 227 38281 221.64 703 683 169.6

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