ASTROSAT CZTI

Data Quality Report

Orbit 35299

Creation date: 2022-04-09T05:35:54.619820
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_082T01_9000005056_35299cztM0_level2.evt modeM0/AS1A11_082T01_9000005056_35299cztM0_level2_quad_clean.evt
Size (bytes)1,768,953,600205,845,120
Size1.6 GB 196.3 MB
Events in quadrant A7,068,3051,439,124
Events in quadrant B20,221,8511,214,105
Events in quadrant C8,241,9061,412,404
Events in quadrant D17,057,6001,156,444

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0307883
B0701583
C0333673
D0605763

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02980
B02980
C02980
D02980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14632370.252870%
B14632509634.827775%
C146321731.182340%
D14632343023.441771%

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 17317 14634 8 8 0.05% 0.05%
B 17316 14632 4009 4009 23.15% 27.40%
C 17317 14634 136 136 0.79% 0.93%
D 17316 14632 3176 3176 18.34% 21.71%

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 222516 659.08 1678 1645 335.1
A 10 83 193328 571.98 1678 1645 335.1
A 7 3 78931 230.62 1678 1645 335.1
B 5 236 8725648 32037.29 1425 1387 272.3
B 5 172 5584794 20503.43 1425 1387 272.3
B 4 232 103900 376.45 1425 1387 272.3
C 0 10 650046 1717.48 1634 1645 377.5
C 15 214 593926 1568.83 1634 1645 377.5
C 3 233 472937 1248.35 1634 1645 377.5
D 7 80 9434307 27530.26 1418 1381 342.6
D 10 118 567652 1652.68 1418 1381 342.6
D 8 195 397095 1154.9 1418 1381 342.6

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