ASTROSAT CZTI

Data Quality Report

Orbit 25733

Creation date: 2024-06-27T19:20:53.378101
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/AS1A09_008T06_9000003748_25733cztM0_level2.evt modeM0/AS1A09_008T06_9000003748_25733cztM0_level2_quad_clean.evt
Size (bytes)561,648,96064,820,160
Size535.6 MB 61.8 MB
Events in quadrant A3,386,566386,605
Events in quadrant B3,513,469391,251
Events in quadrant C4,371,655372,523
Events in quadrant D5,301,496362,658

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143400
B0145910
C0171510
D0203280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6438560.869835%
B6439620.962882%
C64394446.895481%
D64393865.994720%

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 7573 6438 0 0 0.00% 0.00%
B 7574 6439 5 5 0.07% 0.08%
C 7574 6439 275 275 3.63% 4.27%
D 7574 6439 302 302 3.99% 4.69%

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 6 16 57030 327.02 859 842 171.8
A 2 79 13893 75.96 859 842 171.8
A 13 254 9825 52.28 859 842 171.8
B 0 190 42764 261.0 852 830 160.7
B 0 219 38107 232.01 852 830 160.7
B 4 171 31416 190.37 852 830 160.7
C 3 233 1113428 5977.96 800 807 186.1
C 14 238 128528 686.23 800 807 186.1
C 1 16 12225 61.35 800 807 186.1
D 1 52 1027388 5108.17 825 802 201.0
D 7 80 613284 3047.64 825 802 201.0
D 8 195 245758 1218.87 825 802 201.0

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