ASTROSAT CZTI

Data Quality Report

Orbit 36059

Creation date: 2022-08-10T02:58:02.816565
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_069T01_9000005158_36059cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36059cztM0_level2_quad_clean.evt
Size (bytes)529,539,84046,615,680
Size505.0 MB 44.5 MB
Events in quadrant A2,606,452274,384
Events in quadrant B4,683,179276,722
Events in quadrant C4,405,214263,278
Events in quadrant D3,996,852238,882

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106313
B0173172
C0167142
D0151592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A509650.098116%
B50964719.242543%
C50963256.377551%
D50964148.124019%

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 7218 5097 1 1 0.01% 0.02%
B 7218 5097 313 313 4.34% 6.14%
C 7217 5096 246 246 3.41% 4.83%
D 7218 5096 350 350 4.85% 6.87%

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 167152 1313.21 627 616 126.8
A 13 6 10147 75.16 627 616 126.8
A 13 254 7215 52.04 627 616 126.8
B 5 236 2044115 17609.39 612 595 116.0
B 0 213 102959 882.09 612 595 116.0
B 0 229 40268 341.87 612 595 116.0
C 9 187 1244613 9000.31 600 605 138.2
C 0 207 250559 1808.4 600 605 138.2
C 15 214 210984 1522.08 600 605 138.2
D 12 235 598503 4160.68 590 574 143.7
D 12 6 466797 3244.2 590 574 143.7
D 12 17 301824 2096.24 590 574 143.7

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