ASTROSAT CZTI

Data Quality Report

Orbit 42415

Creation date: 2024-06-27T22:39:59.368867
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/AS1T05_138T01_9000005802_42415cztM0_level2.fits modeM0/AS1T05_138T01_9000005802_42415cztM0_level2_quad_clean.evt
Size (bytes)325,365,12091,656,000
Size310.3 MB 87.4 MB
Events in quadrant A2,859,861621,667
Events in quadrant B2,464,132641,036
Events in quadrant C2,532,835614,066
Events in quadrant D3,790,033541,589

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0370
D0370

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114842
B0105512
C0105672
D0146632

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5097110.215813%
B5097170.333530%
C509740.078478%
D50972795.473808%

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 7069 5098 4 4 0.06% 0.08%
B 7069 5098 5 5 0.07% 0.10%
C 7069 5098 2 2 0.03% 0.04%
D 7069 5098 254 254 3.59% 4.98%

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 10 83 541059 4462.71 594 582 121.1
A 13 6 12066 94.82 594 582 121.1
A 13 248 10936 85.49 594 582 121.1
B 3 112 35356 310.89 587 571 111.9
B 0 245 32686 287.02 587 571 111.9
B 5 252 29515 258.68 587 571 111.9
C 15 214 216397 1607.14 578 582 134.3
C 0 207 23095 167.65 578 582 134.3
C 9 54 21135 153.05 578 582 134.3
D 2 16 695912 4977.42 573 559 139.7
D 6 219 290963 2078.75 573 559 139.7
D 1 52 227541 1624.76 573 559 139.7

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