ASTROSAT CZTI

Data Quality Report

Orbit 36188

Creation date: 2022-06-10T13:01:39.590967
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/AS1T05_009T01_9000005168_36188cztM0_level2.evt modeM0/AS1T05_009T01_9000005168_36188cztM0_level2_quad_clean.evt
Size (bytes)276,419,52068,866,560
Size263.6 MB 65.7 MB
Events in quadrant A1,598,438461,191
Events in quadrant B1,878,055472,854
Events in quadrant C2,598,974466,212
Events in quadrant D2,066,551446,933

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A069831
B077661
C099101
D084481

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A336030.089286%
B3360541.607143%
C33602186.488095%
D33601002.976190%

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 3360 3360 1 1 0.03% 0.03%
B 3360 3360 43 43 1.28% 1.28%
C 3360 3360 188 188 5.60% 5.60%
D 3360 3360 100 100 2.98% 2.98%

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 98570 1272.83 382 375 77.1
A 8 144 20486 260.68 382 375 77.1
A 13 254 6223 75.8 382 375 77.1
B 0 213 145105 1984.45 385 376 72.9
B 5 172 81771 1116.05 385 376 72.9
B 5 236 64106 873.83 385 376 72.9
C 0 207 805861 9251.34 375 379 87.1
C 15 214 148308 1699.03 375 379 87.1
C 0 10 97507 1115.56 375 379 87.1
D 12 6 193392 2119.67 372 362 91.1
D 13 249 151275 1657.18 372 362 91.1
D 13 171 95333 1042.88 372 362 91.1

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