ASTROSAT CZTI

Data Quality Report

Orbit 13068

Creation date: 2024-06-27T16:35:58.627317
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_068T01_9000001922_13068cztM0_level2.evt modeM0/AS1G08_068T01_9000001922_13068cztM0_level2_quad_clean.evt
Size (bytes)944,285,76088,928,640
Size900.5 MB 84.8 MB
Events in quadrant A3,276,990681,794
Events in quadrant B6,606,641610,484
Events in quadrant C3,072,055691,432
Events in quadrant D15,213,105263,209

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137923
B0239172
C0132032
D0495362

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6361470.738878%
B6361153424.115705%
C6361260.408741%
D6361544185.536865%

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 7572 6364 2 2 0.03% 0.03%
B 7572 6364 1088 1088 14.37% 17.10%
C 7572 6364 0 0 0.00% 0.00%
D 7572 6363 5156 5156 68.09% 81.03%

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 12 189 88922 546.69 794 776 161.2
A 8 15 49509 302.25 794 776 161.2
A 13 248 26342 158.56 794 776 161.2
B 4 239 1910925 14921.57 686 671 128.0
B 0 85 1819836 14210.04 686 671 128.0
B 3 64 64203 496.27 686 671 128.0
C 13 61 5569 26.21 786 794 182.2
C 8 128 3757 16.26 786 794 182.2
C 8 222 2476 9.23 786 794 182.2
D 1 52 13454605 135887.47 409 398 99.0
D 10 157 121819 1226.35 409 398 99.0
D 9 85 36062 360.21 409 398 99.0

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