ASTROSAT CZTI

Data Quality Report

Orbit 23585

Creation date: 2024-06-27T18:56:29.098002
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/AS1A07_024T04_9000003484_23585cztM0_level2.evt modeM0/AS1A07_024T04_9000003484_23585cztM0_level2_quad_clean.evt
Size (bytes)296,326,08035,349,120
Size282.6 MB 33.7 MB
Events in quadrant A2,161,992205,943
Events in quadrant B2,191,059209,136
Events in quadrant C1,846,541203,082
Events in quadrant D2,533,857201,615

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A086181
B086816
C075501
D099223

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3526571.616563%
B35241554.398411%
C3526782.212138%
D35241163.291714%

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 3931 3526 7 7 0.18% 0.20%
B 3931 3525 56 56 1.42% 1.59%
C 3931 3526 0 0 0.00% 0.00%
D 3930 3525 43 43 1.09% 1.22%

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 15 174 376947 4034.36 452 441 93.3
A 6 16 40703 431.42 452 441 93.3
A 13 254 5724 56.61 452 441 93.3
B 3 64 395333 4500.98 443 432 87.7
B 0 189 30184 339.11 443 432 87.7
B 12 111 10557 115.4 443 432 87.7
C 10 9 82036 800.35 429 432 102.0
C 14 238 66179 644.83 429 432 102.0
C 7 247 19071 182.81 429 432 102.0
D 1 52 500756 4623.62 436 423 108.2
D 7 38 104855 965.06 436 423 108.2
D 7 223 101319 932.39 436 423 108.2

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