ASTROSAT CZTI

Data Quality Report

Orbit 16101

Creation date: 2024-06-27T17:18:01.167972
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/AS1A04_209T01_9000002378_16101cztM0_level2.evt modeM0/AS1A04_209T01_9000002378_16101cztM0_level2_quad_clean.evt
Size (bytes)516,781,440102,421,440
Size492.8 MB 97.7 MB
Events in quadrant A3,592,531653,967
Events in quadrant B3,959,055660,339
Events in quadrant C4,004,647625,914
Events in quadrant D3,576,062630,803

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159904
B0170223
C0170703
D0162313

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76241261.652676%
B76242182.859391%
C76242983.908709%
D76241111.455929%

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 8255 7626 0 0 0.00% 0.00%
B 8255 7625 6 6 0.07% 0.08%
C 8255 7625 43 43 0.52% 0.56%
D 8255 7625 16 16 0.19% 0.21%

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 15 239 18659 92.76 927 905 191.4
A 0 253 9373 44.24 927 905 191.4
A 0 226 8047 37.31 927 905 191.4
B 0 189 181817 992.69 929 903 182.2
B 15 201 36469 195.15 929 903 182.2
B 0 229 22282 117.31 929 903 182.2
C 9 236 258498 1217.61 884 889 211.6
C 3 233 161319 758.28 884 889 211.6
C 14 238 133220 625.47 884 889 211.6
D 12 218 102692 454.24 906 876 224.1
D 2 234 30978 134.29 906 876 224.1
D 5 222 18247 77.5 906 876 224.1

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