ASTROSAT CZTI

Data Quality Report

Orbit 34318

Creation date: 2022-02-01T21:18:44.991884
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/AS1A05_084T04_9000004896_34318cztM0_level2.evt modeM0/AS1A05_084T04_9000004896_34318cztM0_level2_quad_clean.evt
Size (bytes)302,673,60044,395,200
Size288.7 MB 42.3 MB
Events in quadrant A1,208,213319,730
Events in quadrant B1,632,380313,379
Events in quadrant C1,268,669313,691
Events in quadrant D4,894,295225,409

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A051511
B065021
C052581
D0161861

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2379241.008827%
B2379753.152585%
C2379230.966793%
D2379130354.770912%

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 2379 2379 22 22 0.92% 0.92%
B 2379 2379 37 37 1.56% 1.56%
C 2379 2379 14 14 0.59% 0.59%
D 2379 2379 1231 1231 51.74% 51.74%

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 9 143 82939 1417.39 280 275 58.3
A 13 6 24366 413.07 280 275 58.3
A 10 83 15218 256.22 280 275 58.3
B 0 219 136866 2555.71 274 269 53.4
B 0 229 113516 2118.84 274 269 53.4
B 4 171 108871 2031.93 274 269 53.4
C 15 214 103151 1641.39 265 267 62.7
C 14 254 65639 1042.93 265 267 62.7
C 0 10 26478 418.16 265 267 62.7
D 12 227 1828588 32456.29 216 211 56.3
D 2 249 649812 11531.34 216 211 56.3
D 1 52 633669 11244.78 216 211 56.3

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