ASTROSAT CZTI

Data Quality Report

Orbit 42035

Creation date: 2024-06-27T22:36:01.789219
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/AS1A12_037T01_9000005736_42035cztM0_level2.fits modeM0/AS1A12_037T01_9000005736_42035cztM0_level2_quad_clean.evt
Size (bytes)355,743,36085,968,000
Size339.3 MB 82.0 MB
Events in quadrant A4,749,171550,717
Events in quadrant B2,714,364591,887
Events in quadrant C2,474,624566,557
Events in quadrant D2,813,537518,521

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177703
B0117992
C0108202
D0122372

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53543115.808741%
B5354500.933881%
C535440.074710%
D5354961.793052%

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 7027 5355 255 255 3.63% 4.76%
B 7027 5355 37 37 0.53% 0.69%
C 7027 5355 0 0 0.00% 0.00%
D 7027 5355 74 74 1.05% 1.38%

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 15 223 1745150 14710.26 571 559 118.6
A 10 83 545075 4591.32 571 559 118.6
A 12 189 225949 1900.47 571 559 118.6
B 5 255 330225 2890.72 581 564 114.0
B 0 190 72590 631.58 581 564 114.0
B 12 111 14367 121.04 581 564 114.0
C 15 214 223353 1660.91 569 573 134.1
C 12 249 21090 152.96 569 573 134.1
C 0 207 4905 32.3 569 573 134.1
D 13 249 366722 2626.11 565 550 139.4
D 1 52 97814 697.56 565 550 139.4
D 10 199 47349 335.63 565 550 139.4

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