ASTROSAT CZTI

Data Quality Report

Orbit 07827

Creation date: 2024-06-27T15:24:30.471695
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/AS1G06_077T02_9000001076_07827cztM0_level2.evt modeM0/AS1G06_077T02_9000001076_07827cztM0_level2_quad_clean.evt
Size (bytes)436,089,60094,501,440
Size415.9 MB 90.1 MB
Events in quadrant A3,029,002602,266
Events in quadrant B3,458,694612,212
Events in quadrant C3,133,082611,426
Events in quadrant D3,141,783580,326

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133743
B0145872
C0135782
D0137832

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6538180.275314%
B65381191.820128%
C6538160.244723%
D6538210.321199%

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 7638 6539 1 1 0.01% 0.02%
B 7638 6539 90 90 1.18% 1.38%
C 7638 6539 0 0 0.00% 0.00%
D 7638 6539 8 8 0.10% 0.12%

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 15 234 12064 71.49 781 765 158.1
A 0 226 7295 41.32 781 765 158.1
A 12 194 6873 38.65 781 765 158.1
B 4 239 224678 1495.21 789 772 149.7
B 0 219 48364 317.81 789 772 149.7
B 15 204 35200 229.91 789 772 149.7
C 1 16 123264 681.55 769 774 179.7
C 12 4 11363 58.92 769 774 179.7
C 13 61 5835 28.16 769 774 179.7
D 5 233 88835 474.24 762 739 185.8
D 1 52 42832 226.59 762 739 185.8
D 2 152 40869 216.03 762 739 185.8

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