ASTROSAT CZTI

Data Quality Report

Orbit 26912

Creation date: 2024-06-27T19:34:26.338084
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/AS1A09_038T19_9000003892_26912cztM0_level2.evt modeM0/AS1A09_038T19_9000003892_26912cztM0_level2_quad_clean.evt
Size (bytes)281,721,60036,803,520
Size268.7 MB 35.1 MB
Events in quadrant A1,171,012252,900
Events in quadrant B4,613,988200,768
Events in quadrant C1,211,093248,804
Events in quadrant D1,375,649243,270

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A049420
B0153110
C049680
D055860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2329863.692572%
B2329182278.231000%
C23291164.980678%
D2329873.735509%

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 2924 2329 8 8 0.27% 0.34%
B 2923 2328 1246 1246 42.63% 53.52%
C 2924 2329 1 1 0.03% 0.04%
D 2924 2329 7 7 0.24% 0.30%

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 8 192 22768 364.19 297 289 61.7
A 13 254 3117 45.82 297 289 61.7
A 3 137 2929 42.77 297 289 61.7
B 0 189 3636127 76902.38 241 234 47.3
B 10 245 17118 357.11 241 234 47.3
B 3 64 6626 135.2 241 234 47.3
C 14 238 47059 668.39 294 294 70.0
C 15 208 18662 262.52 294 294 70.0
C 13 61 2003 24.43 294 294 70.0
D 1 52 214610 3068.59 294 285 69.8
D 11 176 20290 286.42 294 285 69.8
D 7 80 13421 188.07 294 285 69.8

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