ASTROSAT CZTI

Data Quality Report

Orbit 08783

Creation date: 2024-06-27T15:37:08.932660
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_010T02_9000001222_08783cztM0_level2.evt modeM0/AS1G07_010T02_9000001222_08783cztM0_level2_quad_clean.evt
Size (bytes)549,377,28088,323,840
Size523.9 MB 84.2 MB
Events in quadrant A4,601,312556,898
Events in quadrant B3,440,247574,341
Events in quadrant C3,170,266565,598
Events in quadrant D4,987,122526,097

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180482
B0143741
C0136001
D0191611

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64793435.294027%
B64791261.944745%
C6479530.818027%
D64794847.470289%

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 7669 6479 267 267 3.48% 4.12%
B 7669 6479 58 58 0.76% 0.90%
C 7669 6479 4 4 0.05% 0.06%
D 7669 6479 340 340 4.43% 5.25%

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 700610 4270.15 812 794 163.9
A 8 5 448410 2731.27 812 794 163.9
A 15 239 258392 1571.82 812 794 163.9
B 10 16 165956 1065.61 815 795 155.0
B 5 255 62779 399.92 815 795 155.0
B 4 173 24572 153.41 815 795 155.0
C 9 68 46276 247.61 794 800 183.7
C 1 16 20681 108.25 794 800 183.7
C 14 234 5864 27.57 794 800 183.7
D 2 16 1268611 6463.61 772 754 196.2
D 1 52 355195 1806.96 772 754 196.2
D 2 152 222113 1128.5 772 754 196.2

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