ASTROSAT CZTI

Data Quality Report

Orbit 19762

Creation date: 2024-06-27T18:06:42.969968
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_088T05_9000002952_19762cztM0_level2.evt modeM0/AS1A05_088T05_9000002952_19762cztM0_level2_quad_clean.evt
Size (bytes)271,984,32026,225,280
Size259.4 MB 25.0 MB
Events in quadrant A1,596,850153,537
Events in quadrant B1,441,777157,691
Events in quadrant C3,292,928138,583
Events in quadrant D1,718,783148,372

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A065172
B059751
C0116871
D069881

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A27242689.838473%
B27242569.397944%
C272466424.375918%
D27242529.251101%

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 2829 2726 29 29 1.03% 1.06%
B 2829 2725 0 0 0.00% 0.00%
C 2829 2724 168 168 5.94% 6.17%
D 2829 2727 58 58 2.05% 2.13%

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 216466 2821.3 357 347 76.6
A 0 226 3206 37.32 357 347 76.6
A 3 137 3148 36.57 357 347 76.6
B 0 198 19349 260.52 358 348 72.9
B 0 197 10056 133.1 358 348 72.9
B 12 111 9087 119.82 358 348 72.9
C 3 233 2003331 25791.63 318 319 77.7
C 14 238 47350 605.59 318 319 77.7
C 13 61 2289 25.37 318 319 77.7
D 1 52 265628 3095.34 344 333 85.7
D 7 238 111017 1291.41 344 333 85.7
D 12 218 26210 301.92 344 333 85.7

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