ASTROSAT CZTI

Data Quality Report

Orbit 20244

Creation date: 2024-06-27T18:12:56.096668
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/AS1T03_123T01_9000003000_20244cztM0_level2.evt modeM0/AS1T03_123T01_9000003000_20244cztM0_level2_quad_clean.evt
Size (bytes)462,948,48094,176,000
Size441.5 MB 89.8 MB
Events in quadrant A3,219,081605,473
Events in quadrant B3,281,499614,693
Events in quadrant C3,316,187583,617
Events in quadrant D3,743,069575,891

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140052
B0141322
C0141502
D0156303

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6783580.855079%
B6783650.958278%
C67831071.577473%
D67821452.138012%

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 7633 6784 6 6 0.08% 0.09%
B 7633 6784 2 2 0.03% 0.03%
C 7633 6784 4 4 0.05% 0.06%
D 7632 6783 84 84 1.10% 1.24%

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 9 143 26324 151.43 830 814 168.5
A 0 226 7011 36.79 830 814 168.5
A 3 137 6962 36.5 830 814 168.5
B 0 230 23867 145.52 825 804 158.5
B 12 111 19957 120.85 825 804 158.5
B 11 111 18002 108.51 825 804 158.5
C 14 238 125193 655.66 800 807 189.7
C 3 233 26449 135.16 800 807 189.7
C 9 54 24240 123.52 800 807 189.7
D 1 52 675600 3431.25 806 782 196.7
D 2 234 27499 135.85 806 782 196.7
D 9 85 18768 91.45 806 782 196.7

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