ASTROSAT CZTI

Data Quality Report

Orbit 08277

Creation date: 2024-06-27T15:30:28.490438
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/AS1G07_065T02_9000001150_08277cztM0_level2.evt modeM0/AS1G07_065T02_9000001150_08277cztM0_level2_quad_clean.evt
Size (bytes)460,872,00084,366,720
Size439.5 MB 80.5 MB
Events in quadrant A3,082,184533,798
Events in quadrant B3,304,517541,117
Events in quadrant C3,019,376535,869
Events in quadrant D4,125,535506,235

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132463
B0136672
C0131742
D0162942

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6268851.356094%
B62681021.627313%
C6268801.276324%
D62682403.828973%

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 7438 6268 3 3 0.04% 0.05%
B 7438 6268 6 6 0.08% 0.10%
C 7438 6268 0 0 0.00% 0.00%
D 7438 6268 161 161 2.16% 2.57%

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 0 254 52810 332.12 785 768 156.7
A 0 226 7479 42.83 785 768 156.7
A 12 194 7069 40.21 785 768 156.7
B 0 214 91113 615.71 786 768 146.7
B 11 51 63808 429.62 786 768 146.7
B 4 81 36060 240.52 786 768 146.7
C 13 61 5781 28.35 773 779 176.5
C 9 54 5535 26.95 773 779 176.5
C 3 202 2026 7.07 773 779 176.5
D 1 52 980268 5126.74 760 741 191.1
D 8 230 106316 552.57 760 741 191.1
D 13 169 43655 224.61 760 741 191.1

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