ASTROSAT CZTI

Data Quality Report

Orbit 27839

Creation date: 2024-06-27T19:45:03.321622
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_002T04_9000004022_27839cztM0_level2.evt modeM0/AS1A10_002T04_9000004022_27839cztM0_level2_quad_clean.evt
Size (bytes)632,471,040110,983,680
Size603.2 MB 105.8 MB
Events in quadrant A3,617,457741,660
Events in quadrant B4,318,267710,063
Events in quadrant C4,217,336700,381
Events in quadrant D6,488,219681,794

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157680
B0178110
C0174940
D0244760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7563590.780114%
B75643324.389212%
C75642293.027499%
D75646959.188260%

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 8668 7563 1 1 0.01% 0.01%
B 8669 7565 133 133 1.53% 1.76%
C 8669 7564 7 7 0.08% 0.09%
D 8669 7565 453 453 5.23% 5.99%

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 14596 72.75 933 911 188.1
A 13 248 11491 56.24 933 911 188.1
A 3 137 9108 43.57 933 911 188.1
B 10 245 653766 3787.54 905 880 172.4
B 0 229 36994 209.51 905 880 172.4
B 0 190 35485 200.75 905 880 172.4
C 3 233 572742 2701.7 895 899 211.7
C 14 238 142918 670.98 895 899 211.7
C 13 61 6084 24.5 895 899 211.7
D 1 52 2654718 12650.57 875 850 209.8
D 2 250 317816 1510.93 875 850 209.8
D 13 104 60985 286.65 875 850 209.8

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