ASTROSAT CZTI

Data Quality Report

Orbit 44940

Creation date: 2024-06-27T23:08:12.836875
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/AS1A13_017T02_9000006032_44940cztM0_level2.fits modeM0/AS1A13_017T02_9000006032_44940cztM0_level2_quad_clean.evt
Size (bytes)732,928,320105,312,960
Size699.0 MB 100.4 MB
Events in quadrant A6,029,946771,908
Events in quadrant B4,234,955799,033
Events in quadrant C3,451,748789,115
Events in quadrant D12,875,386344,614

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228822
B0172322
C0149012
D0430882

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69473104.462358%
B69473024.347200%
C69471151.655391%
D6946382455.053268%

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 7862 6948 3 3 0.04% 0.04%
B 7862 6948 105 105 1.34% 1.51%
C 7862 6948 8 8 0.10% 0.12%
D 7861 6946 3348 3348 42.59% 48.20%

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 83 2701934 15420.76 839 821 175.2
A 0 243 42043 235.34 839 821 175.2
A 13 248 15589 84.31 839 821 175.2
B 5 255 296316 1783.45 834 808 165.7
B 4 171 181487 1090.43 834 808 165.7
B 0 168 102563 614.11 834 808 165.7
C 3 233 50015 248.96 837 843 197.5
C 14 254 48535 241.46 837 843 197.5
C 15 208 41682 206.77 837 843 197.5
D 13 187 6775352 45991.71 567 549 147.3
D 13 249 775832 5263.12 567 549 147.3
D 5 171 769308 5218.83 567 549 147.3

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