ASTROSAT CZTI

Data Quality Report

Orbit 07115

Creation date: 2024-06-27T15:15:45.998402
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/AS1A02_090T01_9000000970_07115cztM0_level2.evt modeM0/AS1A02_090T01_9000000970_07115cztM0_level2_quad_clean.evt
Size (bytes)1,215,048,960236,093,760
Size1.1 GB 225.2 MB
Events in quadrant A8,210,5521,504,702
Events in quadrant B8,785,6561,511,907
Events in quadrant C8,357,4691,496,435
Events in quadrant D10,238,1901,408,323

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0366653
B0378682
C0371752
D0417642

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03600
B03600
C03600
D03600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A178451280.717288%
B178451650.924629%
C17845980.549173%
D178453411.910899%

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 19880 17845 0 0 0.00% 0.00%
B 19880 17845 22 22 0.11% 0.12%
C 19880 17847 46 46 0.23% 0.26%
D 19880 17845 264 264 1.33% 1.48%

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 14 111 61013 137.36 2105 2061 429.2
A 0 226 19945 41.67 2105 2061 429.2
A 13 14 19903 41.57 2105 2061 429.2
B 0 214 146066 358.75 2116 2071 401.4
B 4 81 113997 278.85 2116 2071 401.4
B 0 219 107324 262.23 2116 2071 401.4
C 4 254 289036 606.15 2050 2069 473.4
C 10 22 66227 135.52 2050 2069 473.4
C 13 61 16026 29.48 2050 2069 473.4
D 2 216 1355808 2705.8 2034 1974 500.3
D 8 195 923964 1842.71 2034 1974 500.3
D 7 55 144574 285.0 2034 1974 500.3

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