ASTROSAT CZTI

Data Quality Report

Orbit 15779

Creation date: 2024-06-27T17:13:18.524961
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/AS1A04_100T01_9000002336_15779cztM0_level2.evt modeM0/AS1A04_100T01_9000002336_15779cztM0_level2_quad_clean.evt
Size (bytes)384,785,28078,583,680
Size367.0 MB 74.9 MB
Events in quadrant A2,771,805486,665
Events in quadrant B2,906,291500,636
Events in quadrant C2,792,506492,703
Events in quadrant D2,771,044477,546

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125102
B0127831
C0124411
D0127461

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6046320.529276%
B6046580.959312%
C6046681.124711%
D6046280.463116%

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 7017 6048 8 8 0.11% 0.13%
B 7017 6048 1 1 0.01% 0.02%
C 7017 6048 0 0 0.00% 0.00%
D 7017 6048 9 9 0.13% 0.15%

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 0 230 34236 235.39 706 692 142.5
A 15 239 13393 89.13 706 692 142.5
A 0 226 8804 56.93 706 692 142.5
B 4 216 26413 186.97 713 696 137.5
B 0 189 23102 162.89 713 696 137.5
B 3 209 17605 122.93 713 696 137.5
C 14 238 106256 665.33 683 687 158.7
C 3 233 9825 57.59 683 687 158.7
C 10 22 5172 28.27 683 687 158.7
D 1 52 56112 301.58 680 666 183.9
D 2 14 49885 267.71 680 666 183.9
D 2 234 24197 127.99 680 666 183.9

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