ASTROSAT CZTI

Data Quality Report

Orbit 40747

Creation date: 2024-06-27T22:19:55.017156
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/AS1A12_066T01_9000005562_40747cztM0_level2.fits modeM0/AS1A12_066T01_9000005562_40747cztM0_level2_quad_clean.evt
Size (bytes)187,007,04033,307,200
Size178.3 MB 31.8 MB
Events in quadrant A1,249,735244,567
Events in quadrant B1,022,030245,459
Events in quadrant C2,429,283191,962
Events in quadrant D2,052,681172,054

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050431
B044641
C086521
D075901

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A213790.421151%
B213780.374357%
C213744020.589612%
D213757526.906879%

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 2137 2137 3 3 0.14% 0.14%
B 2137 2137 0 0 0.00% 0.00%
C 2137 2137 439 439 20.54% 20.54%
D 2137 2137 91 91 4.26% 4.26%

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 10 83 236300 4612.84 241 236 51.2
A 12 189 34439 668.35 241 236 51.2
A 6 10 29133 564.67 241 236 51.2
B 0 190 23564 488.06 238 231 47.8
B 0 229 17271 356.43 238 231 47.8
B 4 171 16305 336.22 238 231 47.8
C 9 187 1474246 29255.47 210 210 50.4
C 15 214 85222 1687.25 210 210 50.4
C 0 10 47056 929.76 210 210 50.4
D 12 128 833728 15906.4 204 198 52.4
D 12 191 83121 1582.43 204 198 52.4
D 10 199 78837 1500.68 204 198 52.4

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