ASTROSAT CZTI

Data Quality Report

Orbit 13215

Creation date: 2024-06-27T16:37:57.713025
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_216T01_9000001968_13215cztM0_level2.evt modeM0/AS1A04_216T01_9000001968_13215cztM0_level2_quad_clean.evt
Size (bytes)454,412,160104,771,520
Size433.4 MB 99.9 MB
Events in quadrant A3,095,356689,008
Events in quadrant B3,896,573700,274
Events in quadrant C3,029,005695,614
Events in quadrant D3,311,119646,741

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133943
B0155992
C0131432
D0139942

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6328210.331858%
B63282473.903287%
C632890.142225%
D6328240.379267%

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 7714 6330 1 1 0.01% 0.02%
B 7714 6330 151 151 1.96% 2.39%
C 7714 6330 4 4 0.05% 0.06%
D 7714 6330 13 13 0.17% 0.21%

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 8 15 37552 237.92 765 752 154.7
A 12 189 29804 187.83 765 752 154.7
A 1 162 27331 171.84 765 752 154.7
B 4 239 744485 5224.28 769 752 142.4
B 0 187 70258 488.24 769 752 142.4
B 4 173 19374 130.81 769 752 142.4
C 15 208 71206 408.67 756 761 172.4
C 14 234 5845 29.49 756 761 172.4
C 13 61 5473 27.34 756 761 172.4
D 14 34 187054 1068.95 734 714 174.3
D 8 195 112264 639.91 734 714 174.3
D 13 122 57333 324.8 734 714 174.3

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