ASTROSAT CZTI

Data Quality Report

Orbit 15298

Creation date: 2024-06-27T17:06:24.644900
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/AS1A04_223T01_9000002258_15298cztM0_level2.evt modeM0/AS1A04_223T01_9000002258_15298cztM0_level2_quad_clean.evt
Size (bytes)473,302,080113,316,480
Size451.4 MB 108.1 MB
Events in quadrant A3,314,225765,975
Events in quadrant B3,809,177764,418
Events in quadrant C3,488,829742,961
Events in quadrant D3,290,727715,795

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139752
B0155791
C0144181
D0140211

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6345851.339638%
B63451902.994484%
C6345620.977147%
D6345901.418440%

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 7611 6346 1 1 0.01% 0.02%
B 7611 6346 78 78 1.02% 1.23%
C 7611 6346 5 5 0.07% 0.08%
D 7611 6346 14 14 0.18% 0.22%

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 9 143 29043 163.76 855 838 172.2
A 0 226 7846 40.69 855 838 172.2
A 12 194 6356 32.04 855 838 172.2
B 10 16 335805 2135.59 835 816 156.9
B 3 64 64565 406.4 835 816 156.9
B 0 197 38658 241.24 835 816 156.9
C 3 233 295932 1596.19 811 817 184.9
C 4 254 27089 142.1 811 817 184.9
C 13 61 5903 27.51 811 817 184.9
D 5 222 39842 197.6 823 800 197.6
D 13 122 35461 175.43 823 800 197.6
D 10 253 33333 164.66 823 800 197.6

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