ASTROSAT CZTI

Data Quality Report

Orbit 08971

Creation date: 2024-06-27T15:39:35.928108
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/AS1G07_019T01_9000001244_08971cztM0_level2.evt modeM0/AS1G07_019T01_9000001244_08971cztM0_level2_quad_clean.evt
Size (bytes)454,789,44065,090,880
Size433.7 MB 62.1 MB
Events in quadrant A3,669,949383,799
Events in quadrant B3,298,064389,845
Events in quadrant C3,005,366382,267
Events in quadrant D3,364,946368,191

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148603
B0137932
C0131832
D0142322

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6402951.483911%
B64021071.671353%
C6402540.843486%
D64021281.999375%

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 7527 6402 18 18 0.24% 0.28%
B 7527 6402 16 16 0.21% 0.25%
C 7527 6403 2 2 0.03% 0.03%
D 7527 6402 77 77 1.02% 1.20%

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 8 5 576154 3596.55 788 771 160.0
A 5 16 49924 307.24 788 771 160.0
A 0 226 7275 40.65 788 771 160.0
B 10 16 133363 883.67 791 771 150.0
B 0 219 35391 230.73 791 771 150.0
B 0 214 22027 141.66 791 771 150.0
C 4 254 42556 237.9 758 763 175.7
C 13 61 5870 29.07 758 763 175.7
C 14 67 5621 27.65 758 763 175.7
D 13 29 174331 927.95 757 732 187.1
D 1 52 79731 422.28 757 732 187.1
D 8 195 74319 393.35 757 732 187.1

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