ASTROSAT CZTI

Data Quality Report

Orbit 22726

Creation date: 2024-06-27T18:44:53.274112
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/AS1A08_007T01_9000003362_22726cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22726cztM0_level2_quad_clean.evt
Size (bytes)503,265,60074,514,240
Size480.0 MB 71.1 MB
Events in quadrant A3,458,682476,747
Events in quadrant B3,358,274483,557
Events in quadrant C3,201,934454,399
Events in quadrant D4,811,844418,591

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138760
B0135160
C0130240
D0182350

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6060791.303630%
B6061791.303415%
C60611061.748886%
D60615258.661937%

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 7390 6062 0 0 0.00% 0.00%
B 7391 6063 0 0 0.00% 0.00%
C 7391 6063 1 1 0.01% 0.02%
D 7391 6063 392 392 5.30% 6.47%

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 10 17 265764 1619.78 828 813 163.6
A 13 254 10632 60.03 828 813 163.6
A 0 226 7475 40.73 828 813 163.6
B 0 228 61969 413.64 815 798 147.9
B 0 197 48478 322.41 815 798 147.9
B 0 190 32346 213.33 815 798 147.9
C 14 238 126108 700.77 780 788 178.8
C 10 22 11718 61.12 780 788 178.8
C 10 91 10203 52.64 780 788 178.8
D 1 52 1601011 8780.49 763 743 182.3
D 12 233 135401 738.85 763 743 182.3
D 13 172 60982 330.52 763 743 182.3

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