ASTROSAT CZTI

Data Quality Report

Orbit 01026

Creation date: 2024-06-27T14:06:20.807330
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/AS1P01_998T02_9000000190_01026cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01026cztM0_level2_quad_clean.evt
Size (bytes)972,599,040109,290,240
Size927.5 MB 104.2 MB
Events in quadrant A7,294,320738,690
Events in quadrant B7,577,212745,052
Events in quadrant C7,321,648706,696
Events in quadrant D6,855,225691,663

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0259841
B0268461
C0260851
D0247281

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6124240.391901%
B6124440.718485%
C6125240.391837%
D61251021.665306%

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 7299 6125 174 174 2.38% 2.84%
B 7299 6125 206 206 2.82% 3.36%
C 7300 6126 172 172 2.36% 2.81%
D 7300 6126 175 175 2.40% 2.86%

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 11 242 13444 25.72 1892 1900 448.9
A 4 32 12691 24.04 1892 1900 448.9
A 0 253 12632 23.91 1892 1900 448.9
B 5 249 57319 120.54 1941 1950 459.3
B 15 85 29460 59.89 1941 1950 459.3
B 8 234 25826 51.98 1941 1950 459.3
C 15 241 286171 583.29 1753 1814 487.5
C 8 208 127185 257.17 1753 1814 487.5
C 3 111 22152 41.72 1753 1814 487.5
D 12 22 295470 563.51 1696 1754 521.2
D 10 85 181515 344.88 1696 1754 521.2
D 9 64 27396 49.2 1696 1754 521.2

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