ASTROSAT CZTI

Data Quality Report

Orbit 14738

Creation date: 2024-06-27T16:59:17.828059
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/AS1G08_081T01_9000002178_14738cztM0_level2.evt modeM0/AS1G08_081T01_9000002178_14738cztM0_level2_quad_clean.evt
Size (bytes)596,079,360105,641,280
Size568.5 MB 100.7 MB
Events in quadrant A5,029,128664,774
Events in quadrant B4,227,600664,422
Events in quadrant C4,426,220650,128
Events in quadrant D3,815,347652,156

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205043
B0179092
C0180962
D0169742

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81681742.130264%
B81681481.811949%
C8168770.942703%
D8168410.501959%

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 9594 8170 36 36 0.38% 0.44%
B 9594 8170 15 15 0.16% 0.18%
C 9594 8170 3 3 0.03% 0.04%
D 9594 8170 6 6 0.06% 0.07%

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 8 15 1109405 5384.0 1012 990 205.9
A 12 189 23312 108.43 1012 990 205.9
A 0 226 8848 38.17 1012 990 205.9
B 0 189 129192 660.46 1009 984 194.1
B 10 16 85730 436.57 1009 984 194.1
B 0 229 27636 137.3 1009 984 194.1
C 3 233 538226 2356.69 985 990 228.0
C 6 96 28605 121.14 985 990 228.0
C 0 207 8551 33.17 985 990 228.0
D 2 234 29311 120.23 986 962 235.8
D 12 16 22698 92.19 986 962 235.8
D 2 120 19834 80.04 986 962 235.8

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