ASTROSAT CZTI

Data Quality Report

Orbit 15863

Creation date: 2024-06-27T17:14:29.311850
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/AS1A04_143T01_9000002344_15863cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15863cztM0_level2_quad_clean.evt
Size (bytes)440,078,400103,242,240
Size419.7 MB 98.5 MB
Events in quadrant A3,348,051679,722
Events in quadrant B3,314,172707,572
Events in quadrant C3,233,016668,337
Events in quadrant D3,020,718647,821

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139693
B0137602
C0133532
D0129052

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6060500.825083%
B6060410.676568%
C6060641.056106%
D6060170.280528%

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 7431 6062 13 13 0.17% 0.21%
B 7431 6062 1 1 0.01% 0.02%
C 7431 6062 0 0 0.00% 0.00%
D 7431 6062 7 7 0.09% 0.12%

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 15 239 275499 1720.16 797 783 159.7
A 9 143 13175 77.59 797 783 159.7
A 0 226 7165 39.96 797 783 159.7
B 10 245 40026 259.4 811 795 151.2
B 12 111 17101 107.82 811 795 151.2
B 4 173 16758 105.55 811 795 151.2
C 14 238 122742 678.1 778 788 179.8
C 3 233 48746 266.66 778 788 179.8
C 0 207 24316 130.82 778 788 179.8
D 1 52 29262 150.32 780 759 189.6
D 2 234 21921 111.61 780 759 189.6
D 10 70 21881 111.4 780 759 189.6

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