ASTROSAT CZTI

Data Quality Report

Orbit 29749

Creation date: 2024-06-27T20:07:24.846933
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/AS1A10_007T01_9000004276_29749cztM0_level2.evt modeM0/AS1A10_007T01_9000004276_29749cztM0_level2_quad_clean.evt
Size (bytes)581,437,440100,895,040
Size554.5 MB 96.2 MB
Events in quadrant A3,315,281653,457
Events in quadrant B5,604,705658,987
Events in quadrant C3,581,723646,670
Events in quadrant D4,644,518619,986

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142072
B0213372
C0146832
D0185272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6841340.497003%
B68411622.368075%
C6841751.096331%
D6841881.286362%

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 7561 6842 0 0 0.00% 0.00%
B 7561 6841 12 12 0.16% 0.18%
C 7561 6842 0 0 0.00% 0.00%
D 7561 6842 35 35 0.46% 0.51%

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 13 254 12782 69.29 858 840 172.3
A 3 137 8674 45.46 858 840 172.3
A 0 226 7172 36.74 858 840 172.3
B 6 159 2025333 12375.9 853 833 163.6
B 5 255 81142 490.93 853 833 163.6
B 0 229 79216 479.16 853 833 163.6
C 14 238 132885 674.88 834 840 195.7
C 3 233 122127 619.9 834 840 195.7
C 7 247 46731 234.55 834 840 195.7
D 8 195 1294022 6498.68 833 811 199.0
D 2 250 68829 341.81 833 811 199.0
D 13 153 65345 324.3 833 811 199.0

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