ASTROSAT CZTI

Data Quality Report

Orbit 07076

Creation date: 2024-06-27T15:15:15.940195
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/AS1G06_164T01_9000000968_07076cztM0_level2.evt modeM0/AS1G06_164T01_9000000968_07076cztM0_level2_quad_clean.evt
Size (bytes)496,123,200108,987,840
Size473.1 MB 103.9 MB
Events in quadrant A4,268,815667,036
Events in quadrant B3,120,215763,914
Events in quadrant C2,926,512727,600
Events in quadrant D4,263,615685,045

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170983
B0136112
C0133782
D0170942

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6548193029.474649%
B6548470.717776%
C6548200.305437%
D65483825.833842%

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 7773 6549 242 242 3.11% 3.70%
B 7773 6549 2 2 0.03% 0.03%
C 7773 6549 2 2 0.03% 0.03%
D 7773 6549 290 290 3.73% 4.43%

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 14 111 1593235 11557.62 687 675 137.8
A 8 15 17204 119.95 687 675 137.8
A 13 14 12151 83.28 687 675 137.8
B 0 219 60354 407.01 781 763 146.4
B 0 214 27050 179.54 781 763 146.4
B 12 111 14580 94.37 781 763 146.4
C 7 247 22965 131.04 740 742 169.6
C 4 254 14738 82.53 740 742 169.6
C 13 61 5899 30.41 740 742 169.6
D 12 233 969134 5481.59 726 704 176.7
D 8 195 253274 1429.62 726 704 176.7
D 14 34 176061 992.57 726 704 176.7

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