ASTROSAT CZTI

Data Quality Report

Orbit 30605

Creation date: 2024-06-27T20:17:34.155271
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/AS1A10_058T03_9000004408_30605cztM0_level2.evt modeM0/AS1A10_058T03_9000004408_30605cztM0_level2_quad_clean.evt
Size (bytes)708,791,040102,902,400
Size676.0 MB 98.1 MB
Events in quadrant A3,738,179689,630
Events in quadrant B5,688,836684,494
Events in quadrant C4,104,932651,203
Events in quadrant D7,441,685583,206

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156771
B0223041
C0168141
D0275074

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7286751.029371%
B72871882.579937%
C72871912.621106%
D728686311.844634%

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 7376 7287 14 14 0.19% 0.19%
B 7377 7288 6 6 0.08% 0.08%
C 7377 7288 56 56 0.76% 0.77%
D 7376 7287 655 655 8.88% 8.99%

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 0 13 199854 1083.75 913 896 183.6
A 13 254 12540 63.43 913 896 183.6
A 8 192 9927 49.19 913 896 183.6
B 6 159 2038902 11732.02 897 874 173.7
B 0 229 36469 204.9 897 874 173.7
B 5 172 28573 159.45 897 874 173.7
C 15 208 430679 2135.37 858 862 201.3
C 3 233 165044 815.67 858 862 201.3
C 14 238 136280 672.77 858 862 201.3
D 8 195 2205669 11186.87 827 803 197.1
D 12 218 1420518 7203.24 827 803 197.1
D 1 52 233164 1178.93 827 803 197.1

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