ASTROSAT CZTI

Data Quality Report

Orbit 20220315_A11_047T01_9000005006_level2

Creation date: 2022-03-19T12:32:47.156816
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/AS1A11_047T01_9000005006cztM0_level2_bc.evt modeM0/AS1A11_047T01_9000005006cztM0_level2_quad_clean.evt
Size (bytes)527,503,680135,852,480
Size503.1 MB 129.6 MB
Events in quadrant A5,532,251875,690
Events in quadrant B2,898,284905,275
Events in quadrant C2,148,382908,042
Events in quadrant D4,811,558833,635

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0323360
B0223220
C0178750
D0275960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A852092110.809859%
B85204415.176056%
C8520850.997653%
D85204224.953052%

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 11356 8521 5 5 0.04% 0.06%
B 11356 8520 30 30 0.26% 0.35%
C 11356 8521 10 10 0.09% 0.12%
D 11356 8520 80 80 0.70% 0.94%

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 15 169 3905069 42693.1 399 392 91.5
A 10 83 66199 719.52 399 392 91.5
A 13 254 13354 141.72 399 392 91.5
B 5 172 919705 10891.14 411 401 84.4
B 0 190 139452 1647.36 411 401 84.4
B 4 232 134222 1585.4 411 401 84.4
C 15 214 337601 3517.51 406 401 95.9
C 0 10 141575 1472.66 406 401 95.9
C 14 67 38215 394.45 406 401 95.9
D 8 195 1058453 10687.76 400 386 99.0
D 2 31 814092 8219.41 400 386 99.0
D 7 38 394674 3982.79 400 386 99.0

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