ASTROSAT CZTI

Data Quality Report

Orbit 15126

Creation date: 2024-06-27T17:04:06.499141
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_046T09_9000002226_15126cztM0_level2.evt modeM0/AS1G08_046T09_9000002226_15126cztM0_level2_quad_clean.evt
Size (bytes)438,670,08090,855,360
Size418.3 MB 86.6 MB
Events in quadrant A3,022,008588,533
Events in quadrant B3,361,772600,634
Events in quadrant C3,475,775580,182
Events in quadrant D3,004,743549,886

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128883
B0138752
C0141222
D0132292

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6184300.485123%
B6184811.309832%
C6184600.970246%
D6184430.695343%

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 8935 6187 0 0 0.00% 0.00%
B 8935 6187 17 17 0.19% 0.27%
C 8935 6187 6 6 0.07% 0.10%
D 8935 6187 27 27 0.30% 0.44%

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 12 189 25214 157.45 778 763 155.3
A 0 226 7067 40.59 778 763 155.3
A 13 248 6808 38.93 778 763 155.3
B 3 64 146190 1002.78 782 762 145.0
B 10 245 107650 737.04 782 762 145.0
B 4 48 23340 155.68 782 762 145.0
C 3 233 491023 2829.83 756 761 173.2
C 0 207 36137 204.19 756 761 173.2
C 13 61 5509 27.41 756 761 173.2
D 2 33 99582 550.03 744 723 179.7
D 9 1 26278 142.18 744 723 179.7
D 2 234 23017 124.04 744 723 179.7

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