ASTROSAT CZTI

Data Quality Report

Orbit 18029

Creation date: 2024-06-27T17:44:03.966392
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_159T01_9000002678_18029cztM0_level2.evt modeM0/AS1A05_159T01_9000002678_18029cztM0_level2_quad_clean.evt
Size (bytes)1,329,557,760236,859,840
Size1.2 GB 225.9 MB
Events in quadrant A9,322,5731,503,764
Events in quadrant B9,408,6921,513,729
Events in quadrant C9,296,8991,458,345
Events in quadrant D10,974,3841,409,925

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03840
B03840
C03840
D03840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0395884
B0396384
C0389234
D0451644

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186812951.579145%
B186822831.514827%
C186812651.418554%
D186815372.874578%

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 21106 18685 81 81 0.38% 0.43%
B 21107 18686 28 28 0.13% 0.15%
C 21106 18685 2 2 0.01% 0.01%
D 21106 18685 286 286 1.36% 1.53%

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 410032 873.22 2305 2261 467.0
A 4 2 24328 47.26 2305 2261 467.0
A 6 16 22921 44.24 2305 2261 467.0
B 7 220 211523 474.37 2307 2256 441.1
B 12 111 52214 113.25 2307 2256 441.1
B 0 219 48392 104.58 2307 2256 441.1
C 14 238 343302 655.9 2214 2236 520.0
C 3 233 219888 418.57 2214 2236 520.0
C 8 208 46687 85.48 2214 2236 520.0
D 5 222 1388290 2566.27 2222 2165 540.1
D 11 176 527295 972.22 2222 2165 540.1
D 7 38 354641 652.57 2222 2165 540.1

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