ASTROSAT CZTI

Data Quality Report

Orbit 12714

Creation date: 2024-06-27T16:31:27.953898
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/AS1A04_174T01_9000001876_12714cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12714cztM0_level2_quad_clean.evt
Size (bytes)497,030,40079,776,000
Size474.0 MB 76.1 MB
Events in quadrant A3,305,233496,493
Events in quadrant B4,447,644470,419
Events in quadrant C3,135,133497,657
Events in quadrant D3,699,188473,459

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145422
B0177571
C0139791
D0157881

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6855580.846098%
B68554807.002188%
C6855220.320934%
D6855660.962801%

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 7301 6856 12 12 0.16% 0.18%
B 7301 6856 336 336 4.60% 4.90%
C 7301 6856 2 2 0.03% 0.03%
D 7301 6856 53 53 0.73% 0.77%

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 15 239 110395 659.52 811 794 166.2
A 12 189 34422 202.35 811 794 166.2
A 15 222 29754 174.26 811 794 166.2
B 4 239 1277853 8440.16 791 773 151.3
B 0 214 32676 210.84 791 773 151.3
B 0 197 17442 110.16 791 773 151.3
C 15 208 15495 79.62 792 800 184.6
C 14 234 12265 62.12 792 800 184.6
C 8 128 10216 51.02 792 800 184.6
D 1 52 546246 2826.82 782 764 193.0
D 10 199 107345 552.33 782 764 193.0
D 13 104 30184 152.46 782 764 193.0

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