ASTROSAT CZTI

Data Quality Report

Orbit 35844

Creation date: 2022-06-08T17:25:33.167434
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/AS1A11_080T01_9000005146_35844cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35844cztM0_level2_quad_clean.evt
Size (bytes)413,233,92087,068,160
Size394.1 MB 83.0 MB
Events in quadrant A2,850,420580,105
Events in quadrant B2,914,959575,138
Events in quadrant C3,157,995569,304
Events in quadrant D3,233,574543,403

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115153
B0118992
C0123112
D0130202

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5263100.190006%
B5263520.988030%
C52631643.116093%
D52631272.413072%

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 7085 5264 0 0 0.00% 0.00%
B 7085 5264 19 19 0.27% 0.36%
C 7085 5264 133 133 1.88% 2.53%
D 7085 5264 116 116 1.64% 2.20%

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 15 169 183056 1383.36 644 634 131.9
A 10 83 161410 1219.21 644 634 131.9
A 13 6 13009 93.84 644 634 131.9
B 4 232 221140 1792.54 634 619 123.0
B 5 172 113240 915.46 634 619 123.0
B 0 213 30992 246.89 634 619 123.0
C 0 10 412679 2894.01 612 620 142.4
C 15 214 217671 1524.41 612 620 142.4
C 15 208 132187 924.03 612 620 142.4
D 13 249 306227 2012.32 618 602 151.9
D 2 250 230841 1515.96 618 602 151.9
D 7 223 65959 430.33 618 602 151.9

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