ASTROSAT CZTI

Data Quality Report

Orbit 16498

Creation date: 2024-06-27T17:23:34.916604
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/AS1A05_174T01_9000002440_16498cztM0_level2.evt modeM0/AS1A05_174T01_9000002440_16498cztM0_level2_quad_clean.evt
Size (bytes)541,166,40098,942,400
Size516.1 MB 94.4 MB
Events in quadrant A3,469,134646,642
Events in quadrant B3,391,678667,819
Events in quadrant C4,344,454618,706
Events in quadrant D4,739,236605,468

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147323
B0143752
C0177762
D0185802

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6562841.280098%
B6562811.234380%
C65621281.950625%
D65622003.047851%

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 7718 6563 29 29 0.38% 0.44%
B 7718 6563 14 14 0.18% 0.21%
C 7718 6563 0 0 0.00% 0.00%
D 7718 6563 107 107 1.39% 1.63%

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 356822 2184.53 809 795 163.0
A 0 226 7078 38.55 809 795 163.0
A 3 137 5971 31.76 809 795 163.0
B 10 16 74745 477.38 813 795 154.9
B 15 35 60585 385.97 813 795 154.9
B 0 198 21047 130.74 813 795 154.9
C 3 233 1240696 6930.97 764 770 178.9
C 14 238 118324 657.11 764 770 178.9
C 7 247 9514 48.88 764 770 178.9
D 5 222 1611028 8531.12 768 747 188.8
D 12 218 91857 482.69 768 747 188.8
D 8 195 63050 330.08 768 747 188.8

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