ASTROSAT CZTI

Data Quality Report

Orbit 13260

Creation date: 2024-06-27T16:38:29.566035
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/AS1G08_077T01_9000001970_13260cztM0_level2.evt modeM0/AS1G08_077T01_9000001970_13260cztM0_level2_quad_clean.evt
Size (bytes)504,982,08093,340,800
Size481.6 MB 89.0 MB
Events in quadrant A3,777,131599,975
Events in quadrant B5,124,434554,280
Events in quadrant C2,967,330631,749
Events in quadrant D2,991,336595,549

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157023
B0196042
C0132052
D0134152

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63751582.478431%
B6375100815.811765%
C6375350.549020%
D6375130.203922%

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 7491 6377 106 106 1.42% 1.66%
B 7491 6377 667 667 8.90% 10.46%
C 7491 6377 8 8 0.11% 0.13%
D 7491 6377 3 3 0.04% 0.05%

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 15 239 887466 5888.78 743 727 150.6
A 12 96 15209 96.17 743 727 150.6
A 1 162 12709 79.57 743 727 150.6
B 4 239 2409658 18794.96 679 662 128.2
B 0 214 20918 158.04 679 662 128.2
B 0 230 16969 127.23 679 662 128.2
C 15 208 49278 284.71 745 750 170.4
C 3 233 8453 45.19 745 750 170.4
C 13 61 5282 26.59 745 750 170.4
D 13 122 108404 621.04 729 707 173.4
D 8 195 60919 347.21 729 707 173.4
D 5 222 29427 165.61 729 707 173.4

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