ASTROSAT CZTI

Data Quality Report

Orbit 37880

Creation date: 2024-06-27T21:45:37.846420
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/AS1C07_001T12_9000005352_37880cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37880cztM0_level2_quad_clean.evt
Size (bytes)400,835,52092,355,840
Size382.3 MB 88.1 MB
Events in quadrant A2,694,069618,592
Events in quadrant B2,967,543620,729
Events in quadrant C2,635,105608,415
Events in quadrant D3,484,407580,213

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112523
B0123072
C0111352
D0139252

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5267150.284792%
B52671102.088475%
C5267160.303778%
D52671633.094741%

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 7059 5268 6 6 0.08% 0.11%
B 7059 5268 76 76 1.08% 1.44%
C 7059 5268 10 10 0.14% 0.19%
D 7059 5268 143 143 2.03% 2.71%

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 338263 2777.75 600 587 121.6
A 12 189 8234 62.9 600 587 121.6
A 13 6 7044 53.12 600 587 121.6
B 5 172 312545 2808.5 589 574 111.1
B 0 213 261845 2352.08 589 574 111.1
B 0 230 24832 218.38 589 574 111.1
C 15 214 221478 1649.89 575 578 133.9
C 0 10 89707 665.7 575 578 133.9
C 14 254 62766 464.48 575 578 133.9
D 1 52 679225 4906.64 571 554 138.3
D 12 235 136170 980.47 571 554 138.3
D 1 47 113305 815.16 571 554 138.3

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