ASTROSAT CZTI

Data Quality Report

Orbit 21511

Creation date: 2024-06-27T18:28:48.065930
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_141T01_9000003174_21511cztM0_level2.evt modeM0/AS1T03_141T01_9000003174_21511cztM0_level2_quad_clean.evt
Size (bytes)482,083,200102,427,200
Size459.8 MB 97.7 MB
Events in quadrant A3,324,836669,563
Events in quadrant B3,582,875676,832
Events in quadrant C3,348,715660,996
Events in quadrant D3,902,303641,601

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137060
B0145420
C0138780
D0157190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6495971.493457%
B64951492.294072%
C64951422.186297%
D64952043.140878%

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 7595 6496 1 1 0.01% 0.02%
B 7595 6496 29 29 0.38% 0.45%
C 7595 6496 0 0 0.00% 0.00%
D 7595 6496 118 118 1.55% 1.82%

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 9770 51.7 861 844 172.7
A 0 226 7485 38.46 861 844 172.7
A 3 137 6644 33.59 861 844 172.7
B 3 64 134616 839.19 850 830 159.4
B 0 230 63246 391.51 850 830 159.4
B 0 190 27087 164.7 850 830 159.4
C 14 238 129110 679.17 823 831 188.9
C 0 239 6102 27.91 823 831 188.9
C 13 61 5791 26.26 823 831 188.9
D 1 52 330670 1639.04 834 809 201.3
D 14 35 176790 874.43 834 809 201.3
D 13 172 85449 420.56 834 809 201.3

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