ASTROSAT CZTI

Data Quality Report

Orbit 20210418_A10_082T06_9000004318_level2

Creation date: 2021-04-19T13:53:32.103655
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A10_082T06_9000004318cztM0_level2_bc.evt modeM0/AS1A10_082T06_9000004318cztM0_level2_quad_clean.evt
Size (bytes)1,041,307,200326,972,160
Size993.1 MB 311.8 MB
Events in quadrant A5,319,0322,085,709
Events in quadrant B12,787,1342,060,085
Events in quadrant C5,209,6912,002,525
Events in quadrant D6,474,9571,997,080

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0532240
B0789130
C0534300
D0555530

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05220
B05220
C05220
D05220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A255564721.846924%
B255568613.369072%
C255566652.602129%
D255564191.639537%

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 28016 25555 0 0 0.00% 0.00%
B 28016 25555 11 11 0.04% 0.04%
C 28016 25557 0 0 0.00% 0.00%
D 28016 25557 34 34 0.12% 0.13%

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 8 192 57579 191.31 1355 1334 294.0
A 13 254 47411 156.72 1355 1334 294.0
A 3 1 10909 32.57 1355 1334 294.0
B 6 159 7044399 27192.97 1347 1314 259.0
B 0 190 249399 957.84 1347 1314 259.0
B 5 255 208727 800.81 1347 1314 259.0
C 3 233 114484 369.18 1296 1290 306.6
C 2 114 49824 158.29 1296 1290 306.6
C 14 254 38141 120.19 1296 1290 306.6
D 8 195 701758 2210.2 1322 1283 316.9
D 13 138 180275 564.77 1322 1283 316.9
D 2 250 132900 415.29 1322 1283 316.9

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