ASTROSAT CZTI

Data Quality Report

Orbit 31576

Creation date: 2024-06-27T20:30:09.069837
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/AS1A10_082T10_9000004602_31576cztM0_level2.evt modeM0/AS1A10_082T10_9000004602_31576cztM0_level2_quad_clean.evt
Size (bytes)585,578,88083,920,320
Size558.5 MB 80.0 MB
Events in quadrant A3,121,567529,796
Events in quadrant B5,389,078527,384
Events in quadrant C4,237,762502,379
Events in quadrant D4,523,659506,069

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138431
B0211911
C0170911
D0179191

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68241031.509379%
B68252022.959707%
C68254586.710623%
D68254967.267399%

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 7199 6824 0 0 0.00% 0.00%
B 7200 6825 17 17 0.24% 0.25%
C 7200 6825 9 9 0.12% 0.13%
D 7200 6826 431 431 5.99% 6.31%

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 13 254 12168 69.77 808 789 163.1
A 3 137 8585 47.8 808 789 163.1
A 0 226 6846 37.14 808 789 163.1
B 6 159 1808106 11668.83 798 776 154.9
B 4 80 345692 2226.91 798 776 154.9
B 0 190 32025 201.76 798 776 154.9
C 3 233 929016 5315.56 747 752 174.6
C 14 238 190879 1088.73 747 752 174.6
C 14 254 115513 657.16 747 752 174.6
D 12 233 1280124 7056.37 759 736 181.3
D 8 195 249209 1370.43 759 736 181.3
D 13 249 46626 253.1 759 736 181.3

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