ASTROSAT CZTI

Data Quality Report

Orbit 01012

Creation date: 2024-06-27T14:06:07.826630
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/AS1P01_998T02_9000000190_01012cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01012cztM0_level2_quad_clean.evt
Size (bytes)941,590,080104,135,040
Size898.0 MB 99.3 MB
Events in quadrant A6,945,100702,145
Events in quadrant B7,299,230704,889
Events in quadrant C6,992,243675,100
Events in quadrant D6,896,414668,092

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0247041
B0257431
C0249021
D0245884

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5773601.039321%
B5773781.351117%
C5773591.021999%
D5772460.796951%

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 6948 5774 216 216 3.11% 3.74%
B 6948 5774 248 248 3.57% 4.30%
C 6948 5774 207 207 2.98% 3.59%
D 6947 5773 228 228 3.28% 3.95%

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 12 189 7438 12.94 1809 1823 433.8
A 11 79 7324 12.68 1809 1823 433.8
A 3 111 5396 8.24 1809 1823 433.8
B 0 151 60121 132.93 1854 1861 438.3
B 15 22 55597 122.61 1854 1861 438.3
B 7 221 30935 66.34 1854 1861 438.3
C 15 241 275756 579.25 1695 1751 473.0
C 10 19 29356 58.36 1695 1751 473.0
C 8 208 26562 52.45 1695 1751 473.0
D 1 4 410855 796.15 1670 1730 513.9
D 10 85 179577 346.09 1670 1730 513.9
D 0 255 25204 45.68 1670 1730 513.9

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