ASTROSAT CZTI

Data Quality Report

Orbit 33814

Creation date: 2024-06-27T20:52:51.771929
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/AS1T04_077T01_9000004824_33814cztM0_level2.evt modeM0/AS1T04_077T01_9000004824_33814cztM0_level2_quad_clean.evt
Size (bytes)539,608,32062,496,000
Size514.6 MB 59.6 MB
Events in quadrant A2,709,729397,762
Events in quadrant B3,619,329384,958
Events in quadrant C3,229,409394,430
Events in quadrant D6,439,570358,232

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111463
B0141432
C0129352
D0227222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5089120.235803%
B50892013.949695%
C50891042.043624%
D508966413.047750%

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 7182 5090 2 2 0.03% 0.04%
B 7182 5090 138 138 1.92% 2.71%
C 7182 5090 75 75 1.04% 1.47%
D 7182 5090 632 632 8.80% 12.42%

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 15 169 19086 134.27 689 677 137.1
A 13 6 13686 94.89 689 677 137.1
A 10 83 11089 75.94 689 677 137.1
B 5 172 678723 5446.54 673 659 124.5
B 4 170 71211 566.71 673 659 124.5
B 0 229 52288 414.71 673 659 124.5
C 0 10 229341 1499.24 671 679 152.5
C 15 214 165305 1079.38 671 679 152.5
C 3 233 121632 793.04 671 679 152.5
D 12 235 1773481 11231.64 653 638 157.8
D 8 195 1307112 8277.01 653 638 157.8
D 2 250 210431 1329.12 653 638 157.8

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