ASTROSAT CZTI

Data Quality Report

Orbit 25868

Creation date: 2024-06-27T19:22:16.574085
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/AS1A07_068T01_9000003756_25868cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25868cztM0_level2_quad_clean.evt
Size (bytes)526,979,52094,504,320
Size502.6 MB 90.1 MB
Events in quadrant A4,389,626618,278
Events in quadrant B4,604,807594,678
Events in quadrant C3,228,385599,502
Events in quadrant D3,304,776604,755

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172420
B0177190
C0136510
D0141090

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63713425.368074%
B63726249.792844%
C63721141.789077%
D6372520.816070%

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 7581 6372 219 219 2.89% 3.44%
B 7582 6373 500 500 6.59% 7.85%
C 7582 6373 1 1 0.01% 0.02%
D 7582 6373 6 6 0.08% 0.09%

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 13 1243836 7589.21 816 802 163.8
A 13 254 9806 54.97 816 802 163.8
A 3 137 7365 40.07 816 802 163.8
B 10 245 1498413 10043.74 782 764 149.1
B 12 111 17763 114.0 782 764 149.1
B 11 111 15750 100.5 782 764 149.1
C 14 238 126456 695.73 775 781 180.6
C 3 233 78169 428.42 775 781 180.6
C 13 61 5428 25.73 775 781 180.6
D 1 52 233196 1232.52 788 772 188.6
D 2 234 27413 141.27 788 772 188.6
D 1 3 27217 140.24 788 772 188.6

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