ASTROSAT CZTI

Data Quality Report

Orbit 27134

Creation date: 2024-06-27T19:36:52.030332
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/AS1T03_244T01_9000003912_27134cztM0_level2.evt modeM0/AS1T03_244T01_9000003912_27134cztM0_level2_quad_clean.evt
Size (bytes)1,457,596,800231,111,360
Size1.4 GB 220.4 MB
Events in quadrant A9,490,4191,456,349
Events in quadrant B9,505,2671,491,078
Events in quadrant C8,936,3611,430,480
Events in quadrant D14,957,5681,341,525

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0399810
B0397450
C0380870
D0569360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185803441.851453%
B185813111.673753%
C185812531.361606%
D1858114447.771379%

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 20425 18583 101 101 0.49% 0.54%
B 20426 18584 56 56 0.27% 0.30%
C 20426 18584 6 6 0.03% 0.03%
D 20426 18584 1221 1221 5.98% 6.57%

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 14 235 758112 1677.74 2247 2198 450.6
A 13 254 30720 63.3 2247 2198 450.6
A 12 189 28313 57.96 2247 2198 450.6
B 10 245 474321 1105.45 2244 2179 427.1
B 3 112 145959 336.64 2244 2179 427.1
B 12 111 53672 120.56 2244 2179 427.1
C 14 238 343692 668.77 2172 2185 510.6
C 15 208 75375 143.33 2172 2185 510.6
C 2 16 20981 36.81 2172 2185 510.6
D 1 52 5816902 10987.59 2117 2065 529.2
D 7 38 489062 920.22 2117 2065 529.2
D 2 250 349281 656.09 2117 2065 529.2

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