ASTROSAT CZTI

Data Quality Report

Orbit 13255

Creation date: 2024-06-27T16:38:25.251646
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_13255cztM0_level2.evt modeM0/AS1G08_077T01_9000001970_13255cztM0_level2_quad_clean.evt
Size (bytes)465,932,16096,114,240
Size444.3 MB 91.7 MB
Events in quadrant A3,161,547615,705
Events in quadrant B3,904,046619,537
Events in quadrant C3,066,091625,894
Events in quadrant D3,542,862601,813

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137693
B0159292
C0135122
D0149272

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6415651.013250%
B64152303.585347%
C6415480.748246%
D6415771.200312%

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 7536 6417 2 2 0.03% 0.03%
B 7536 6417 132 132 1.75% 2.06%
C 7536 6417 1 1 0.01% 0.02%
D 7536 6417 14 14 0.19% 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 15 239 58397 361.28 785 769 159.5
A 1 162 32920 201.56 785 769 159.5
A 1 178 13161 77.69 785 769 159.5
B 4 239 708916 4848.68 777 758 146.1
B 3 64 95757 650.45 777 758 146.1
B 0 230 27258 181.44 777 758 146.1
C 15 208 45157 250.3 774 778 177.3
C 13 61 5506 26.67 774 778 177.3
C 14 234 2973 12.38 774 778 177.3
D 1 52 486369 2639.94 768 746 184.0
D 5 222 76295 410.7 768 746 184.0
D 8 195 33946 180.48 768 746 184.0

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