ASTROSAT CZTI

Data Quality Report

Orbit 15617

Creation date: 2024-06-27T17:11:11.212288
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_031T01_9000002314_15617cztM0_level2.evt modeM0/AS1G08_031T01_9000002314_15617cztM0_level2_quad_clean.evt
Size (bytes)400,144,32080,864,640
Size381.6 MB 77.1 MB
Events in quadrant A2,919,924523,258
Events in quadrant B2,995,332528,982
Events in quadrant C2,952,356503,886
Events in quadrant D2,869,554500,680

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118012
B0121151
C0119071
D0118101

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5604581.034975%
B5604761.356174%
C5604881.570307%
D5604550.981442%

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 6910 5605 0 0 0.00% 0.00%
B 6910 5605 0 0 0.00% 0.00%
C 6910 5605 0 0 0.00% 0.00%
D 6910 5605 4 4 0.06% 0.07%

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 3 80 11757 72.47 754 740 152.0
A 0 226 6655 38.91 754 740 152.0
A 15 222 5756 32.99 754 740 152.0
B 0 189 39587 278.43 739 721 139.6
B 3 209 32706 229.13 739 721 139.6
B 0 214 21779 150.85 739 721 139.6
C 14 238 111509 659.31 720 727 168.0
C 3 233 27518 159.44 720 727 168.0
C 13 61 5030 25.61 720 727 168.0
D 2 234 25969 140.32 739 719 179.9
D 12 110 22139 119.04 739 719 179.9
D 10 70 19883 106.5 739 719 179.9

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