ASTROSAT CZTI

Data Quality Report

Orbit 22423

Creation date: 2024-06-27T18:40:56.527992
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/AS1T03_149T04_9000003322_22423cztM0_level2.evt modeM0/AS1T03_149T04_9000003322_22423cztM0_level2_quad_clean.evt
Size (bytes)183,317,76057,741,120
Size174.8 MB 55.1 MB
Events in quadrant A1,307,855389,605
Events in quadrant B1,388,730405,014
Events in quadrant C1,399,916380,714
Events in quadrant D1,259,523369,904

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A057731
B059301
C059231
D057631

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A284120.070398%
B284170.246392%
C2841280.985568%
D284130.105597%

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 2841 2841 0 0 0.00% 0.00%
B 2841 2841 2 2 0.07% 0.07%
C 2841 2841 8 8 0.28% 0.28%
D 2841 2841 0 0 0.00% 0.00%

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 2 79 5539 76.9 336 330 67.7
A 13 254 3830 51.67 336 330 67.7
A 3 1 3614 48.48 336 330 67.7
B 4 173 25415 382.3 343 334 65.6
B 3 64 23476 352.75 343 334 65.6
B 12 111 7504 109.29 343 334 65.6
C 14 238 52538 662.97 333 336 78.7
C 0 10 23899 299.25 333 336 78.7
C 10 22 22826 285.62 333 336 78.7
D 2 234 11033 134.22 329 322 79.8
D 13 104 8921 107.75 329 322 79.8
D 14 226 3259 36.8 329 322 79.8

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