ASTROSAT CZTI

Data Quality Report

Orbit 06226

Creation date: 2024-06-27T15:04:24.626691
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/AS1A02_046T01_9000000814_06226cztM0_level2.evt modeM0/AS1A02_046T01_9000000814_06226cztM0_level2_quad_clean.evt
Size (bytes)496,670,400124,047,360
Size473.7 MB 118.3 MB
Events in quadrant A4,389,222819,073
Events in quadrant B3,319,421836,214
Events in quadrant C3,000,983834,301
Events in quadrant D3,874,081797,291

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176653
B0146182
C0137522
D0162622

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67431472.180039%
B6743620.919472%
C6743280.415245%
D6743761.127095%

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 7693 6744 11 11 0.14% 0.16%
B 7693 6744 3 3 0.04% 0.04%
C 7693 6744 0 0 0.00% 0.00%
D 7693 6744 18 18 0.23% 0.27%

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 13 34 1236265 7845.62 772 753 157.5
A 0 31 104072 656.09 772 753 157.5
A 8 15 75884 477.09 772 753 157.5
B 0 219 73796 495.21 784 765 147.5
B 15 204 72316 485.18 784 765 147.5
B 0 214 55517 371.27 784 765 147.5
C 1 16 12302 65.79 763 767 175.3
C 13 61 6174 30.84 763 767 175.3
C 9 16 5384 26.33 763 767 175.3
D 2 63 445052 2394.71 761 735 185.5
D 12 221 282241 1517.22 761 735 185.5
D 2 136 85992 459.51 761 735 185.5

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