ASTROSAT CZTI

Data Quality Report

Orbit 46805

Creation date: 2024-06-27T23:27:52.473230
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/AS1A13_074T06_9000006270_46805cztM0_level2.fits modeM0/AS1A13_074T06_9000006270_46805cztM0_level2_quad_clean.evt
Size (bytes)148,080,96030,985,920
Size141.2 MB 29.6 MB
Events in quadrant A1,996,418198,875
Events in quadrant B1,029,045216,643
Events in quadrant C916,119208,276
Events in quadrant D1,397,671183,031

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A073631
B041891
C039141
D053831

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17991739.616454%
B1799744.113396%
C1799372.056698%
D17991377.615342%

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 2794 1800 8 8 0.29% 0.44%
B 2794 1800 3 3 0.11% 0.17%
C 2794 1800 0 0 0.00% 0.00%
D 2794 1800 72 72 2.58% 4.00%

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 1099203 22054.46 228 223 49.8
A 13 248 5625 108.41 228 223 49.8
A 0 243 3392 63.6 228 223 49.8
B 3 112 36758 770.08 227 220 47.4
B 15 54 26016 543.68 227 220 47.4
B 5 172 23480 490.23 227 220 47.4
C 3 233 15038 268.68 226 227 55.1
C 14 254 10046 178.12 226 227 55.1
C 0 207 4961 85.88 226 227 55.1
D 13 249 214353 3645.54 227 219 58.7
D 1 52 131407 2233.42 227 219 58.7
D 2 249 51726 876.88 227 219 58.7

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