ASTROSAT CZTI

Data Quality Report

Orbit 18497

Creation date: 2024-06-27T17:50:47.971971
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/AS1T03_083T01_9000002742_18497cztM0_level2.evt modeM0/AS1T03_083T01_9000002742_18497cztM0_level2_quad_clean.evt
Size (bytes)213,436,80049,354,560
Size203.5 MB 47.1 MB
Events in quadrant A1,417,558346,484
Events in quadrant B2,526,485323,851
Events in quadrant C1,118,613337,848
Events in quadrant D1,249,562326,644

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A057131
B090031
C048051
D051451

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2206793.581142%
B220649722.529465%
C2206100.453309%
D220670.317316%

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 2206 2206 61 61 2.77% 2.77%
B 2206 2206 390 390 17.68% 17.68%
C 2206 2206 0 0 0.00% 0.00%
D 2206 2206 5 5 0.23% 0.23%

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 0 13 283578 4741.42 291 287 59.7
A 15 192 10164 165.31 291 287 59.7
A 13 254 3379 51.75 291 287 59.7
B 10 245 1396614 26340.7 274 269 53.0
B 4 216 23948 446.68 274 269 53.0
B 0 228 20125 374.56 274 269 53.0
C 14 238 43891 679.29 274 276 64.2
C 3 233 4801 70.48 274 276 64.2
C 13 61 1927 25.71 274 276 64.2
D 7 238 79151 1148.67 276 267 68.7
D 7 223 49280 713.71 276 267 68.7
D 1 52 42236 611.13 276 267 68.7

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