ASTROSAT CZTI

Data Quality Report

Orbit 20768

Creation date: 2024-06-27T18:19:22.567956
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/AS1A05_013T01_9000003070_20768cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20768cztM0_level2_quad_clean.evt
Size (bytes)498,144,96088,787,520
Size475.1 MB 84.7 MB
Events in quadrant A3,144,522582,574
Events in quadrant B3,224,319581,940
Events in quadrant C3,181,699565,382
Events in quadrant D5,110,459521,058

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132181
B0134372
C0134571
D0192841

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6267340.542524%
B6267540.861656%
C6267941.499920%
D62674437.068773%

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 7437 6268 0 0 0.00% 0.00%
B 7437 6267 3 3 0.04% 0.05%
C 7437 6268 0 0 0.00% 0.00%
D 7437 6267 286 286 3.85% 4.56%

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 5 16 7888 43.89 816 801 161.5
A 0 226 7237 39.86 816 801 161.5
A 3 137 6291 34.0 816 801 161.5
B 12 111 17710 112.73 805 787 150.1
B 0 189 15979 101.2 805 787 150.1
B 11 111 15401 97.35 805 787 150.1
C 14 238 127254 699.36 783 789 180.8
C 13 61 5466 25.86 783 789 180.8
C 14 111 1928 6.3 783 789 180.8
D 1 52 1261842 6935.56 768 749 181.8
D 1 20 839315 4611.81 768 749 181.8
D 7 238 63010 342.41 768 749 181.8

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