ASTROSAT CZTI

Data Quality Report

Orbit 38452

Creation date: 2024-06-27T21:52:57.355443
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_018T01_9000005386_38452cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38452cztM0_level2_quad_clean.evt
Size (bytes)393,471,36095,209,920
Size375.2 MB 90.8 MB
Events in quadrant A3,150,872649,220
Events in quadrant B4,032,578614,245
Events in quadrant C2,782,987634,382
Events in quadrant D4,147,399579,733

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129623
B0159792
C0118402
D0163552

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5798430.741635%
B57984858.364953%
C5798160.275957%
D57981702.932046%

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 7140 5799 26 26 0.36% 0.45%
B 7140 5799 321 321 4.50% 5.54%
C 7140 5799 6 6 0.08% 0.10%
D 7140 5799 104 104 1.46% 1.79%

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 419804 3191.61 643 628 131.3
A 9 143 195280 1482.08 643 628 131.3
A 12 189 16295 119.29 643 628 131.3
B 5 184 1213349 10069.32 624 605 120.4
B 0 183 216049 1788.81 624 605 120.4
B 0 230 24547 198.79 624 605 120.4
C 15 214 243058 1622.74 632 636 149.4
C 14 254 29972 196.37 632 636 149.4
C 0 10 23680 154.25 632 636 149.4
D 12 235 1028798 6729.69 626 607 152.8
D 2 249 258028 1684.87 626 607 152.8
D 2 153 189286 1234.94 626 607 152.8

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