ASTROSAT CZTI

Data Quality Report

Orbit 09150

Creation date: 2024-06-27T15:41:58.574434
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/AS1C02_042T01_9000001278_09150cztM0_level2.evt modeM0/AS1C02_042T01_9000001278_09150cztM0_level2_quad_clean.evt
Size (bytes)495,270,72084,176,640
Size472.3 MB 80.3 MB
Events in quadrant A3,805,097519,222
Events in quadrant B3,320,048531,740
Events in quadrant C3,183,977523,162
Events in quadrant D4,212,051484,766

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01593667
B01465039
C01458769
D01761653

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70332163.071236%
B70412012.854708%
C70271221.736161%
D70393845.455320%

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 8994 7049 14 14 0.16% 0.20%
B 8994 7052 1 1 0.01% 0.01%
C 8994 7050 0 0 0.00% 0.00%
D 8994 7052 242 242 2.69% 3.43%

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 8 5 461553 2721.91 834 817 169.3
A 1 162 50708 294.74 834 817 169.3
A 15 174 29553 169.76 834 817 169.3
B 0 214 20407 122.48 841 819 159.9
B 12 111 17790 106.12 841 819 159.9
B 0 219 16156 95.9 841 819 159.9
C 9 68 8859 43.12 812 814 186.6
C 13 61 6297 29.39 812 814 186.6
C 8 222 3815 16.08 812 814 186.6
D 1 52 886289 4358.35 793 769 203.2
D 12 233 148028 724.78 793 769 203.2
D 2 14 100256 489.65 793 769 203.2

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