ASTROSAT CZTI

Data Quality Report

Orbit 16183

Creation date: 2024-06-27T17:19:03.475860
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/AS1T02_109T01_9000002386_16183cztM0_level2.evt modeM0/AS1T02_109T01_9000002386_16183cztM0_level2_quad_clean.evt
Size (bytes)484,021,44065,787,840
Size461.6 MB 62.7 MB
Events in quadrant A3,444,148393,244
Events in quadrant B3,434,647399,912
Events in quadrant C3,657,358377,966
Events in quadrant D3,690,037376,461

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140143
B0138002
C0147362
D0148092

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63641392.184161%
B63641392.184161%
C63641973.095537%
D63641923.016970%

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 7585 6366 4 4 0.05% 0.06%
B 7584 6365 1 1 0.01% 0.02%
C 7585 6366 19 19 0.25% 0.30%
D 7584 6365 67 67 0.88% 1.05%

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 15 174 75217 433.42 864 848 171.6
A 8 247 47092 269.51 864 848 171.6
A 0 226 7689 39.87 864 848 171.6
B 3 209 24444 146.15 853 832 161.6
B 0 189 23518 140.42 853 832 161.6
B 0 229 21074 125.29 853 832 161.6
C 7 247 211087 1122.52 815 822 187.3
C 14 238 126866 672.9 815 822 187.3
C 3 233 118980 630.8 815 822 187.3
D 1 52 175548 854.76 840 817 204.4
D 7 38 168095 818.3 840 817 204.4
D 2 33 123101 598.2 840 817 204.4

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