ASTROSAT CZTI

Data Quality Report

Orbit 03666

Creation date: 2024-06-27T14:32:10.885433
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/AS1G05_191T01_9000000476_03666cztM0_level2.evt modeM0/AS1G05_191T01_9000000476_03666cztM0_level2_quad_clean.evt
Size (bytes)560,597,76093,343,680
Size534.6 MB 89.0 MB
Events in quadrant A4,728,834579,506
Events in quadrant B4,310,069577,194
Events in quadrant C3,668,108573,226
Events in quadrant D3,741,576554,357

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191033
B0179192
C0162622
D0167842

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78001081.384615%
B78001842.358974%
C7800700.897436%
D7800851.089744%

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 8730 7802 37 37 0.42% 0.47%
B 8730 7802 26 26 0.30% 0.33%
C 8730 7802 9 9 0.10% 0.12%
D 8730 7802 26 26 0.30% 0.33%

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 13 251 556417 2885.55 941 919 192.5
A 13 164 474188 2458.41 941 919 192.5
A 8 15 34610 175.01 941 919 192.5
B 4 81 285374 1554.95 949 929 182.9
B 15 204 224501 1222.18 949 929 182.9
B 14 167 62830 338.39 949 929 182.9
C 9 247 61851 285.95 913 917 213.1
C 7 220 22341 100.54 913 917 213.1
C 1 16 11774 50.95 913 917 213.1
D 13 223 147018 663.36 909 883 220.3
D 13 239 51012 227.55 909 883 220.3
D 13 137 44099 196.17 909 883 220.3

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
Veto Counter