ASTROSAT CZTI

Data Quality Report

Orbit 25690

Creation date: 2024-06-27T19:20:27.107600
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/AS1A09_008T03_9000003746_25690cztM0_level2.evt modeM0/AS1A09_008T03_9000003746_25690cztM0_level2_quad_clean.evt
Size (bytes)518,437,44094,121,280
Size494.4 MB 89.8 MB
Events in quadrant A3,291,963630,110
Events in quadrant B3,361,092636,006
Events in quadrant C4,233,414565,847
Events in quadrant D4,381,943573,280

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138840
B0140540
C0168130
D0171830

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6376250.392095%
B6376400.627353%
C63764607.214555%
D63761282.007528%

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 7596 6376 1 1 0.01% 0.02%
B 7596 6377 1 1 0.01% 0.02%
C 7596 6376 322 322 4.24% 5.05%
D 7596 6377 133 133 1.75% 2.09%

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 41706 244.67 833 818 167.1
A 0 13 19689 112.92 833 818 167.1
A 10 17 17815 101.71 833 818 167.1
B 0 219 47997 303.17 824 805 155.7
B 0 245 36763 231.0 824 805 155.7
B 4 171 26213 163.23 824 805 155.7
C 3 233 1122712 6319.07 766 771 177.5
C 14 238 123183 689.45 766 771 177.5
C 13 61 5515 26.72 766 771 177.5
D 1 52 857664 4453.6 790 768 192.4
D 8 195 333237 1727.96 790 768 192.4
D 13 104 90501 466.37 790 768 192.4

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