ASTROSAT CZTI

Data Quality Report

Orbit 06137

Creation date: 2024-06-27T15:03:13.667983
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/AS1G06_019T01_9000000796_06137cztM0_level2.evt modeM0/AS1G06_019T01_9000000796_06137cztM0_level2_quad_clean.evt
Size (bytes)194,460,48058,959,360
Size185.5 MB 56.2 MB
Events in quadrant A1,415,184400,483
Events in quadrant B1,588,377406,342
Events in quadrant C1,333,480391,263
Events in quadrant D1,351,881379,361

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A061522
B066251
C060251
D061121

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A291570.240137%
B2915371.269297%
C2915100.343053%
D291530.102916%

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 2915 2915 0 0 0.00% 0.00%
B 2915 2915 26 26 0.89% 0.89%
C 2915 2915 0 0 0.00% 0.00%
D 2915 2915 3 3 0.10% 0.10%

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 8 15 19394 260.47 358 351 73.1
A 13 170 14656 195.67 358 351 73.1
A 0 254 3776 46.85 358 351 73.1
B 3 64 160878 2330.84 357 351 68.9
B 4 81 17276 245.75 357 351 68.9
B 15 204 12584 177.62 357 351 68.9
C 1 16 18576 231.69 336 339 78.7
C 13 61 2662 29.51 336 339 78.7
C 12 4 2242 24.18 336 339 78.7
D 5 97 42178 493.91 341 332 84.7
D 8 195 15515 179.21 341 332 84.7
D 13 169 8712 98.91 341 332 84.7

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