ASTROSAT CZTI

Data Quality Report

Orbit 28757

Creation date: 2024-06-27T19:55:54.569129
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_093T01_9000004128_28757cztM0_level2.evt modeM0/AS1A10_093T01_9000004128_28757cztM0_level2_quad_clean.evt
Size (bytes)576,757,44095,045,760
Size550.0 MB 90.6 MB
Events in quadrant A3,195,174633,615
Events in quadrant B3,472,909647,791
Events in quadrant C4,197,335589,599
Events in quadrant D6,159,299551,568

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137752
B0146132
C0169112
D0229682

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6534330.505051%
B6534861.316192%
C65343184.866850%
D65344997.636976%

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 7594 6535 10 10 0.13% 0.15%
B 7594 6535 30 30 0.40% 0.46%
C 7594 6534 16 16 0.21% 0.24%
D 7594 6535 413 413 5.44% 6.32%

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 15 174 127066 794.72 788 771 158.9
A 14 239 17565 105.68 788 771 158.9
A 13 254 12790 75.63 788 771 158.9
B 4 80 170768 1132.62 790 770 150.1
B 5 255 145428 963.79 790 770 150.1
B 10 245 32074 208.56 790 770 150.1
C 3 233 879129 4971.57 751 755 176.7
C 14 238 175642 989.85 751 755 176.7
C 0 207 118013 663.67 751 755 176.7
D 1 52 1839913 10333.38 737 714 178.0
D 8 195 1269987 7131.3 737 714 178.0
D 12 233 155034 867.03 737 714 178.0

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