ASTROSAT CZTI

Data Quality Report

Orbit 26225

Creation date: 2024-06-27T19:26:17.807070
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/AS1C05_019T04_9000003788_26225cztM0_level2.evt modeM0/AS1C05_019T04_9000003788_26225cztM0_level2_quad_clean.evt
Size (bytes)542,162,880125,516,160
Size517.0 MB 119.7 MB
Events in quadrant A3,406,843854,800
Events in quadrant B3,257,409883,050
Events in quadrant C3,172,578852,229
Events in quadrant D6,141,841758,004

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144800
B0139710
C0137140
D0228060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64961051.616379%
B6496540.831281%
C6496600.923645%
D6496102615.794335%

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 7601 6497 69 69 0.91% 1.06%
B 7601 6497 18 18 0.24% 0.28%
C 7601 6497 6 6 0.08% 0.09%
D 7601 6497 941 941 12.38% 14.48%

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 0 13 410446 2607.81 776 759 157.1
A 13 254 10747 63.58 776 759 157.1
A 3 137 6870 38.9 776 759 157.1
B 5 172 130145 879.08 786 766 147.2
B 12 111 17274 112.17 786 766 147.2
B 0 230 15899 102.82 786 766 147.2
C 14 238 122070 681.55 763 768 178.0
C 3 233 25334 138.03 763 768 178.0
C 2 16 22992 124.87 763 768 178.0
D 1 52 3019774 17987.22 703 686 167.8
D 15 0 305124 1813.79 703 686 167.8
D 7 38 51591 303.28 703 686 167.8

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