ASTROSAT CZTI

Data Quality Report

Orbit 19267

Creation date: 2024-06-27T18:00:51.112679
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/AS1A05_088T02_9000002850_19267cztM0_level2.evt modeM0/AS1A05_088T02_9000002850_19267cztM0_level2_quad_clean.evt
Size (bytes)422,864,64097,943,040
Size403.3 MB 93.4 MB
Events in quadrant A2,967,072632,145
Events in quadrant B3,053,725655,543
Events in quadrant C3,384,692644,057
Events in quadrant D3,001,450623,883

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125382
B0127962
C0136472
D0127932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5875390.663830%
B5875751.276596%
C58752504.255319%
D5875651.106383%

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 7080 5876 1 1 0.01% 0.02%
B 7080 5876 0 0 0.00% 0.00%
C 7080 5876 59 59 0.83% 1.00%
D 7080 5876 5 5 0.07% 0.09%

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 4 2 15559 97.23 762 748 152.3
A 3 1 8509 50.95 762 748 152.3
A 13 254 8247 49.23 762 748 152.3
B 0 229 23257 156.3 768 751 144.0
B 0 230 22228 149.15 768 751 144.0
B 12 111 17438 115.89 768 751 144.0
C 3 247 290945 1672.9 747 754 173.5
C 14 238 117079 670.59 747 754 173.5
C 3 233 64120 365.29 747 754 173.5
D 1 52 123210 674.5 755 735 181.6
D 2 234 25206 134.77 755 735 181.6
D 12 221 9517 48.36 755 735 181.6

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