ASTROSAT CZTI

Data Quality Report

Orbit 46541

Creation date: 2024-06-27T23:24:28.322044
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/AS1A13_091T07_9000006226_46541cztM0_level2.fits modeM0/AS1A13_091T07_9000006226_46541cztM0_level2_quad_clean.evt
Size (bytes)1,447,038,720285,431,040
Size1.3 GB 272.2 MB
Events in quadrant A17,872,8431,872,724
Events in quadrant B11,739,1071,900,128
Events in quadrant C8,674,9461,904,988
Events in quadrant D13,837,7971,678,740

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03780
B03780
C03780
D03780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0658273
B0475903
C0396483
D0544083

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186547083.795433%
B186559274.969177%
C186551680.900563%
D1865511286.046636%

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 19884 18655 73 73 0.37% 0.39%
B 19885 18656 414 414 2.08% 2.22%
C 19885 18658 36 36 0.18% 0.19%
D 19885 18658 785 785 3.95% 4.21%

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 10 83 8830697 20382.65 2079 2031 433.1
A 9 191 720162 1657.94 2079 2031 433.1
A 15 235 99589 225.23 2079 2031 433.1
B 10 128 2056354 5077.17 2063 1999 404.6
B 3 112 487760 1200.52 2063 1999 404.6
B 0 189 318772 782.88 2063 1999 404.6
C 14 254 252304 514.96 2059 2068 485.9
C 9 54 226641 462.15 2059 2068 485.9
C 12 249 53857 106.58 2059 2068 485.9
D 8 176 1576222 3045.53 2026 1959 516.9
D 1 52 1295551 2502.55 2026 1959 516.9
D 13 249 1185337 2289.33 2026 1959 516.9

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