ASTROSAT CZTI

Data Quality Report

Orbit 11144

Creation date: 2024-06-27T16:08:51.027813
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/AS1G08_071T02_9000001620_11144cztM0_level2.evt modeM0/AS1G08_071T02_9000001620_11144cztM0_level2_quad_clean.evt
Size (bytes)63,397,44012,605,760
Size60.5 MB 12.0 MB
Events in quadrant A679,48677,719
Events in quadrant B400,55985,424
Events in quadrant C313,13283,463
Events in quadrant D477,35279,296

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228
B0239
C0239
D0237

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A086
B0107
C074
D085

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A039011420
B026621043
C02230831
D02825947

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6637711.613876%
B686213.061224%
C67950.736377%
D689182.612482%

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 2676 710 53 53 1.98% 7.46%
B 2699 738 5 5 0.19% 0.68%
C 2713 734 0 0 0.00% 0.00%
D 2682 748 9 9 0.34% 1.20%

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 14 238 209099 11945.28 75 73 17.5
A 8 5 170896 9762.08 75 73 17.5
A 11 29 5470 308.42 75 73 17.5
B 4 239 26004 1433.01 82 80 18.1
B 15 204 22949 1264.13 82 80 18.1
B 10 16 20534 1130.64 82 80 18.1
C 9 204 6693 328.02 78 78 20.2
C 13 61 581 24.94 78 78 20.2
C 3 202 189 5.5 78 78 20.2
D 1 52 56123 2675.65 78 76 20.9
D 10 199 48980 2334.65 78 76 20.9
D 13 104 21494 1022.48 78 76 20.9

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