ASTROSAT CZTI

Data Quality Report

Orbit 08197

Creation date: 2024-06-27T15:29:20.743382
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/AS1A03_106T01_9000001130_08197cztM0_level2.evt modeM0/AS1A03_106T01_9000001130_08197cztM0_level2_quad_clean.evt
Size (bytes)528,059,520126,504,000
Size503.6 MB 120.6 MB
Events in quadrant A3,686,804826,669
Events in quadrant B3,928,084835,205
Events in quadrant C3,572,772817,186
Events in quadrant D4,251,005786,031

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168163
B0173052
C0167622
D0186832

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81491211.484845%
B81491501.840717%
C8149670.822187%
D81491752.147503%

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 8724 8153 0 0 0.00% 0.00%
B 8724 8153 11 11 0.13% 0.13%
C 8724 8153 0 0 0.00% 0.00%
D 8724 8153 117 117 1.34% 1.44%

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 29795 147.13 948 926 196.2
A 0 226 8930 40.79 948 926 196.2
A 12 194 8538 38.79 948 926 196.2
B 0 214 82489 445.29 950 923 183.2
B 10 16 46245 247.42 950 923 183.2
B 4 81 41584 221.98 950 923 183.2
C 8 128 9951 42.68 911 915 211.7
C 13 61 7214 29.75 911 915 211.7
C 8 112 5110 19.81 911 915 211.7
D 1 52 665414 2973.79 914 883 223.5
D 12 233 43978 192.85 914 883 223.5
D 2 234 29695 128.93 914 883 223.5

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