ASTROSAT CZTI

Data Quality Report

Orbit 39473

Creation date: 2024-06-27T22:05:00.207840
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/AS1A12_044T05_9000005480_39473cztM0_level2.fits modeM0/AS1A12_044T05_9000005480_39473cztM0_level2_quad_clean.evt
Size (bytes)203,250,24037,203,840
Size193.8 MB 35.5 MB
Events in quadrant A2,930,402207,766
Events in quadrant B1,033,795273,411
Events in quadrant C1,712,710248,066
Events in quadrant D1,667,928233,071

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103021
B046631
C065661
D066111

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A227758025.472112%
B2277110.483092%
C22771285.621432%
D22771134.962670%

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 2277 2277 527 527 23.14% 23.14%
B 2277 2277 6 6 0.26% 0.26%
C 2277 2277 90 90 3.95% 3.95%
D 2277 2277 94 94 4.13% 4.13%

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 15 222 1840493 37860.13 229 225 48.6
A 10 83 177655 3650.3 229 225 48.6
A 9 143 8336 166.87 229 225 48.6
B 8 3 32779 649.31 250 243 50.1
B 0 230 10310 200.9 250 243 50.1
B 12 111 5924 113.37 250 243 50.1
C 15 208 524252 8962.31 243 245 58.5
C 9 187 123330 2105.17 243 245 58.5
C 15 214 96237 1641.79 243 245 58.5
D 12 0 400044 6627.89 239 232 60.3
D 12 227 136606 2260.74 239 232 60.3
D 13 249 69948 1155.72 239 232 60.3

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